steve/axial-resistor

Axial leaded metal film resistor, Vishay Beyschlag MBA/SMA 0204, MBB/SMA 0207 and MBE/SMA 0414, with colour rings, horizontal or vertical.

v1.0.0 Latest STEVE MIT 0

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Isometric

Parameters

Preset9 sizes

Series

MBAMBBMBE

MBA: DIN size 0204 (3.6 x Ø 1.6). MBB: 0207 (6.5 x Ø 2.5). MBE: 0414 (11.9 x Ø 4.2).

Resistance0.22–22000000 Ω

In the range the sheet gives for the series and tolerance; it sets the colour rings.

Tolerance

DFGJ

D 0.5 %, F 1 % (five rings), G 2 %, J 5 % (four rings). One the sheet offers for this resistance.

Mounting2 options

horizontal: the body lies on the board between the leads. vertical: it stands over lead 1 and lead 2 comes back down beside it.

Lead pitch1.27–60 mm

The board's hole spacing. Horizontal: at least the sheet's smallest bent lead spacing (5.0, 10.0, 15.0). Vertical: room for lead 2 to pass the body.

Leads below the board0.5–30 mm

Detail

fullsimple

full: body, colour rings and leads. simple: the body only, for big assemblies.

Defaults built

part.py 157 lines · Python · STEVE runtime · checked

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"""Axial leaded resistor, Vishay Beyschlag professional metal film MBA/SMA 0204, MBB/SMA 0207 and MBE/SMA 0414, mounted horizontal or

vertical. Lead 1 is at the origin and lead 2 at +X by the pitch; the leads go down through the board. Horizontal: the body lies on the board

along X, centred between the leads. Vertical: the body stands on the board over lead 1 and lead 2 comes back down beside it. The resistance

and tolerance make the colour rings (IEC 60062). Dimensions from Vishay's data sheet, listed in the README."""

import math

from steve import Model

series = "MBA" # MBA (DIN size 0204), MBB (0207) or MBE (0414)

resistance = 10000.0 # Ω Resistance (in the range the sheet gives for the series and tolerance)

tolerance = "F" # D 0.5 %, F 1 %, G 2 %, J 5 % (one the sheet offers for this resistance)

mounting = "horizontal" # horizontal or vertical

pitch = 7.62 # mm Lead pitch on the board

tail = 3.0 # mm Leads below the board

detail = "full" # full: body, colour rings and leads; simple: the body only

# Vishay Beyschlag "MBA/SMA 0204, MBB/SMA 0207, MBE/SMA 0414 - Professional Metal Film Leaded Resistors", document number 28766, revision

# 11-Jul-2018, page 13, table "DIMENSIONS - Leaded resistor types, mass and relevant physical dimensions": D max, L max, d nom and M min

# (the smallest bent lead spacing), in mm.

# Each entry: (body diameter max, body length max, lead diameter, smallest bent lead spacing).

SIZES = {

"MBA": (1.6, 3.6, 0.5, 5.0),

"MBB": (2.5, 6.5, 0.6, 10.0),

"MBE": (4.2, 11.9, 0.8, 15.0),

}

# The same sheet, page 3, "TEMPERATURE COEFFICIENT AND RESISTANCE RANGE - Standard Products", ± 50 ppm/K rows: resistance ranges in Ω by

# tolerance (the ± 25 ppm/K rows lie inside these). Values come from E24 (± 5 %, ± 2 %), E24/E96 (± 1 %) or E24/E192 (± 0.5 %).

RANGES = {

"MBA": {"J": ((0.22, 0.91),), "F": ((1, 10e6),), "D": ((10, 475e3),)},

"MBB": {"J": ((0.22, 0.91), (11e6, 22e6)), "G": ((0.22, 0.91),), "F": ((1, 10e6),), "D": ((10, 1e6),)},

"MBE": {"J": ((0.22, 0.91),), "F": ((1, 22e6),), "D": ((10, 2.43e6),)},

}

# Colour code, IEC 60062 (the sheet, page 7: "Four or five color code rings designate the resistance value and tolerance in accordance with

# IEC 60062"): ± 5 % and ± 2 % carry two digit rings, ± 1 % and ± 0.5 % three; then the multiplier ring and the tolerance ring.

DIGIT_COLOURS = ("#1a1a1a", "#7a4a26", "#c8302c", "#e8792b", "#f2d22e", "#3f8f3f", "#2f5fb3", "#7d4fa8", "#8a8a8a", "#f4f4f4")

MULTIPLIER_COLOURS = {-2: "#c0c0c4", -1: "#cfa646", 0: "#1a1a1a", 1: "#7a4a26", 2: "#c8302c", 3: "#e8792b", 4: "#f2d22e", 5: "#3f8f3f",

6: "#2f5fb3"}

TOLERANCE_COLOURS = {"D": "#3f8f3f", "F": "#7a4a26", "G": "#c8302c", "J": "#cfa646"}

if series not in SIZES:

raise ValueError(f"no series {series!r}: {', '.join(SIZES)}")

if tolerance not in RANGES[series]:

raise ValueError(f"Vishay {series} comes in tolerance {', '.join(RANGES[series])}")

if not any(low * (1 - 1e-9) <= resistance <= high * (1 + 1e-9) for low, high in RANGES[series][tolerance]):

spans = " or ".join(f"{low:g} to {high:g} Ω" for low, high in RANGES[series][tolerance])

raise ValueError(f"Vishay {series} at tolerance {tolerance}: {spans}")

DIGITS = 2 if tolerance in "JG" else 3

exponent = math.floor(math.log10(resistance) + 1e-9) - (DIGITS - 1)

digits = round(resistance / 10 ** exponent)

if digits >= 10 ** DIGITS:

digits, exponent = digits // 10, exponent + 1

if not math.isclose(digits * 10.0 ** exponent, resistance, rel_tol=1e-6) or exponent not in MULTIPLIER_COLOURS:

raise ValueError(f"{resistance} Ω can't be written in {DIGITS} digit rings and a multiplier ring")

diameter, length, lead, spacing = SIZES[series]

if mounting not in ("horizontal", "vertical"):

raise ValueError("mounting is horizontal or vertical")

R, r = diameter / 2, lead / 2

BEND = lead # bend radius of the formed leads, one lead diameter: a proportion, for looks (the sheet gives none)

LOOP = 2.0 # vertical: lead 2 clears the body's top end by this before it turns down, a proportion

if mounting == "horizontal" and pitch < max(spacing, length + 2 * BEND):

raise ValueError(f"horizontal pitch: at least {max(spacing, length + 2 * BEND):.2f} mm for {series} (the sheet's M min is {spacing})")

if mounting == "vertical" and pitch < max(R + r, 2 * BEND):

raise ValueError(f"vertical pitch must let lead 2 pass the body: at least {max(R + r, 2 * BEND):.2f} mm for a {diameter} mm body")

def body_profile():

"""The body outline as (u along the axis from the body's lead-1 end, radius), and the ring segments' indices in ring order. Proportions,

for looks (the sheet draws the body but dimensions only D and L): the end caps are 0.25 x the length at the full diameter, their outer

edges rounded by 0.25 x the radius; the coated middle is 0.9 x the diameter, reached over 0.05 x the length. Rings 0.08 x the length wide:

the first on the lead-1 cap, the tolerance ring on the other cap, the rest spread over the middle."""

e, cap, taper, mid, w = 0.25 * R, 0.25 * length, 0.05 * length, 0.9 * R, 0.08 * length

rings = DIGITS + 2

middle = (cap + taper, length - cap - taper)

inner = rings - 2

gap = (middle[1] - middle[0] - inner * w) / (inner + 1)

centres = [(e + cap) / 2] + [middle[0] + gap * (i + 1) + w * (i + 0.5) for i in range(inner)] + [length - (e + cap) / 2]

pts = [(0, 0), (0, R - e)]

pts += [(e * (1 - math.cos(math.pi / 2 * i / 4)), R - e + e * math.sin(math.pi / 2 * i / 4)) for i in range(1, 5)]

flats = [(e, cap, R), (middle[0], middle[1], mid), (length - cap, length - e, R)]

segments = []

for k, (a, b, rad) in enumerate(flats):

if k:

pts.append((a, rad))

for c in centres:

if a < c < b:

pts += [(c - w / 2, rad), (c + w / 2, rad)]

segments.append(len(pts) - 2)

pts.append((b, rad))

pts += [(length - u, v) for u, v in reversed(pts[1:5])]

pts += [(length, 0)]

return pts, segments

def ring_colours():

text = str(digits).rjust(DIGITS, "0")

return [DIGIT_COLOURS[int(t)] for t in text] + [MULTIPLIER_COLOURS[exponent], TOLERANCE_COLOURS[tolerance]]

model = Model()

100

outline, rings = body_profile()

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horizontal = mounting == "horizontal"

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x0 = pitch / 2 - length / 2

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axis_z = R # horizontal: the body rests on the board

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if horizontal:

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points = [(x0 + u, axis_z + v) for u, v in outline]

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axis = ((0, 0, axis_z), (1, 0, 0))

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else:

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points = [(v, u) for u, v in outline]

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axis = "Z"

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with model.sketch("body_sketch", on="XZ", name="Body") as sk:

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sk.polyline("body_outline", points, closed=True)

112

model.revolve("body", "body_sketch", axis=axis, op="new", body="body_body", name="Body")

113

bodies = ["body_body"]

114

if detail == "full":

115

# Leads, swept along their bends. Horizontal: up from below the board at x = 0 and x = pitch to the body's axis, bent toward the body.

116

# Vertical: lead 1 straight down from the body's bottom end; lead 2 up from the top end, over and down at x = pitch.

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if horizontal:

118

legs = [(0.0, 1, x0), (pitch, -1, x0 + length)]

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for i, (x, side, x_end) in enumerate(legs, 1):

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with model.sketch(f"lead_{i}_path", on="XZ", name=f"Lead {i} path") as sk:

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sk.line(f"lead_{i}_up", (x, -tail), (x, axis_z - BEND), construction=True)

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if side > 0:

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sk.arc(f"lead_{i}_bend", (x + BEND, axis_z - BEND), BEND, 90, 180, construction=True)

124

else:

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sk.arc(f"lead_{i}_bend", (x - BEND, axis_z - BEND), BEND, 0, 90, construction=True)

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sk.line(f"lead_{i}_along", (x + side * BEND, axis_z), (x_end, axis_z), construction=True)

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model.plane(f"lead_{i}_start", on="XY", offset=-tail, name=f"Lead {i} end")

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with model.sketch(f"lead_{i}_section", on=f"lead_{i}_start", name=f"Lead {i}") as sk:

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sk.circle(f"lead_{i}_round", (x, 0), r)

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model.sweep(f"lead_{i}", f"lead_{i}_section", f"lead_{i}_path", op="new", body=f"lead_{i}_body", name=f"Lead {i}")

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bodies.append(f"lead_{i}_body")

132

else:

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model.plane("lead_1_start", on="XY", offset=-tail, name="Lead 1 end")

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with model.sketch("lead_1_section", on="lead_1_start", name="Lead 1") as sk:

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sk.circle("lead_1_round", (0, 0), r)

136

model.extrude("lead_1", "lead_1_section", distance=tail, op="new", body="lead_1_body", name="Lead 1")

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top = length + LOOP

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with model.sketch("lead_2_path", on="XZ", name="Lead 2 path") as sk:

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sk.line("lead_2_up", (0, length), (0, top - BEND), construction=True)

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sk.arc("lead_2_bend_1", (BEND, top - BEND), BEND, 90, 180, construction=True)

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sk.line("lead_2_over", (BEND, top), (pitch - BEND, top), construction=True)

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sk.arc("lead_2_bend_2", (pitch - BEND, top - BEND), BEND, 0, 90, construction=True)

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sk.line("lead_2_down", (pitch, top - BEND), (pitch, -tail), construction=True)

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model.plane("lead_2_start", on="XY", offset=length, name="Lead 2 start")

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with model.sketch("lead_2_section", on="lead_2_start", name="Lead 2") as sk:

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sk.circle("lead_2_round", (0, 0), r)

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model.sweep("lead_2", "lead_2_section", "lead_2_path", op="new", body="lead_2_body", name="Lead 2")

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bodies += ["lead_1_body", "lead_2_body"]

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# Materials, for looks and a rough mass: the body as its ceramic core (the sheet: "a high grade ceramic body") in the sheet's "light blue

150

# protective coating"; the leads copper, tin plated ("electrolytic copper plated with 100 % pure tin").

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model.material("alumina", bodies=["body_body"], color="#9cc3e0")

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if detail == "full":

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model.material("copper", bodies=[b for b in bodies if b.startswith("lead")], color="#c9ccd1")

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for i, colour in zip(rings, ring_colours()):

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model.appearance(color=colour, faces=[f"body.side(body_outline.side{i})"])

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result = model.result()

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"""Axial leaded resistor, Vishay Beyschlag professional metal film MBA/SMA 0204, MBB/SMA 0207 and MBE/SMA 0414, mounted horizontal or
vertical. Lead 1 is at the origin and lead 2 at +X by the pitch; the leads go down through the board. Horizontal: the body lies on the board
along X, centred between the leads. Vertical: the body stands on the board over lead 1 and lead 2 comes back down beside it. The resistance
and tolerance make the colour rings (IEC 60062). Dimensions from Vishay's data sheet, listed in the README."""
import math

from steve import Model

series = "MBA"  # MBA (DIN size 0204), MBB (0207) or MBE (0414)
resistance = 10000.0  # Ω Resistance (in the range the sheet gives for the series and tolerance)
tolerance = "F"  # D 0.5 %, F 1 %, G 2 %, J 5 % (one the sheet offers for this resistance)
mounting = "horizontal"  # horizontal or vertical
pitch = 7.62  # mm Lead pitch on the board
tail = 3.0  # mm Leads below the board
detail = "full"  # full: body, colour rings and leads; simple: the body only

# Vishay Beyschlag "MBA/SMA 0204, MBB/SMA 0207, MBE/SMA 0414 - Professional Metal Film Leaded Resistors", document number 28766, revision
# 11-Jul-2018, page 13, table "DIMENSIONS - Leaded resistor types, mass and relevant physical dimensions": D max, L max, d nom and M min
# (the smallest bent lead spacing), in mm.
# Each entry: (body diameter max, body length max, lead diameter, smallest bent lead spacing).
SIZES = {
    "MBA": (1.6, 3.6, 0.5, 5.0),
    "MBB": (2.5, 6.5, 0.6, 10.0),
    "MBE": (4.2, 11.9, 0.8, 15.0),
}
# The same sheet, page 3, "TEMPERATURE COEFFICIENT AND RESISTANCE RANGE - Standard Products", ± 50 ppm/K rows: resistance ranges in Ω by
# tolerance (the ± 25 ppm/K rows lie inside these). Values come from E24 (± 5 %, ± 2 %), E24/E96 (± 1 %) or E24/E192 (± 0.5 %).
RANGES = {
    "MBA": {"J": ((0.22, 0.91),), "F": ((1, 10e6),), "D": ((10, 475e3),)},
    "MBB": {"J": ((0.22, 0.91), (11e6, 22e6)), "G": ((0.22, 0.91),), "F": ((1, 10e6),), "D": ((10, 1e6),)},
    "MBE": {"J": ((0.22, 0.91),), "F": ((1, 22e6),), "D": ((10, 2.43e6),)},
}
# Colour code, IEC 60062 (the sheet, page 7: "Four or five color code rings designate the resistance value and tolerance in accordance with
# IEC 60062"): ± 5 % and ± 2 % carry two digit rings, ± 1 % and ± 0.5 % three; then the multiplier ring and the tolerance ring.
DIGIT_COLOURS = ("#1a1a1a", "#7a4a26", "#c8302c", "#e8792b", "#f2d22e", "#3f8f3f", "#2f5fb3", "#7d4fa8", "#8a8a8a", "#f4f4f4")
MULTIPLIER_COLOURS = {-2: "#c0c0c4", -1: "#cfa646", 0: "#1a1a1a", 1: "#7a4a26", 2: "#c8302c", 3: "#e8792b", 4: "#f2d22e", 5: "#3f8f3f",
                      6: "#2f5fb3"}
TOLERANCE_COLOURS = {"D": "#3f8f3f", "F": "#7a4a26", "G": "#c8302c", "J": "#cfa646"}

if series not in SIZES:
    raise ValueError(f"no series {series!r}: {', '.join(SIZES)}")
if tolerance not in RANGES[series]:
    raise ValueError(f"Vishay {series} comes in tolerance {', '.join(RANGES[series])}")
if not any(low * (1 - 1e-9) <= resistance <= high * (1 + 1e-9) for low, high in RANGES[series][tolerance]):
    spans = " or ".join(f"{low:g} to {high:g} Ω" for low, high in RANGES[series][tolerance])
    raise ValueError(f"Vishay {series} at tolerance {tolerance}: {spans}")
DIGITS = 2 if tolerance in "JG" else 3
exponent = math.floor(math.log10(resistance) + 1e-9) - (DIGITS - 1)
digits = round(resistance / 10 ** exponent)
if digits >= 10 ** DIGITS:
    digits, exponent = digits // 10, exponent + 1
if not math.isclose(digits * 10.0 ** exponent, resistance, rel_tol=1e-6) or exponent not in MULTIPLIER_COLOURS:
    raise ValueError(f"{resistance} Ω can't be written in {DIGITS} digit rings and a multiplier ring")
diameter, length, lead, spacing = SIZES[series]
if mounting not in ("horizontal", "vertical"):
    raise ValueError("mounting is horizontal or vertical")
R, r = diameter / 2, lead / 2
BEND = lead   # bend radius of the formed leads, one lead diameter: a proportion, for looks (the sheet gives none)
LOOP = 2.0    # vertical: lead 2 clears the body's top end by this before it turns down, a proportion
if mounting == "horizontal" and pitch < max(spacing, length + 2 * BEND):
    raise ValueError(f"horizontal pitch: at least {max(spacing, length + 2 * BEND):.2f} mm for {series} (the sheet's M min is {spacing})")
if mounting == "vertical" and pitch < max(R + r, 2 * BEND):
    raise ValueError(f"vertical pitch must let lead 2 pass the body: at least {max(R + r, 2 * BEND):.2f} mm for a {diameter} mm body")


def body_profile():
    """The body outline as (u along the axis from the body's lead-1 end, radius), and the ring segments' indices in ring order. Proportions,
    for looks (the sheet draws the body but dimensions only D and L): the end caps are 0.25 x the length at the full diameter, their outer
    edges rounded by 0.25 x the radius; the coated middle is 0.9 x the diameter, reached over 0.05 x the length. Rings 0.08 x the length wide:
    the first on the lead-1 cap, the tolerance ring on the other cap, the rest spread over the middle."""
    e, cap, taper, mid, w = 0.25 * R, 0.25 * length, 0.05 * length, 0.9 * R, 0.08 * length
    rings = DIGITS + 2
    middle = (cap + taper, length - cap - taper)
    inner = rings - 2
    gap = (middle[1] - middle[0] - inner * w) / (inner + 1)
    centres = [(e + cap) / 2] + [middle[0] + gap * (i + 1) + w * (i + 0.5) for i in range(inner)] + [length - (e + cap) / 2]
    pts = [(0, 0), (0, R - e)]
    pts += [(e * (1 - math.cos(math.pi / 2 * i / 4)), R - e + e * math.sin(math.pi / 2 * i / 4)) for i in range(1, 5)]
    flats = [(e, cap, R), (middle[0], middle[1], mid), (length - cap, length - e, R)]
    segments = []
    for k, (a, b, rad) in enumerate(flats):
        if k:
            pts.append((a, rad))
        for c in centres:
            if a < c < b:
                pts += [(c - w / 2, rad), (c + w / 2, rad)]
                segments.append(len(pts) - 2)
        pts.append((b, rad))
    pts += [(length - u, v) for u, v in reversed(pts[1:5])]
    pts += [(length, 0)]
    return pts, segments


def ring_colours():
    text = str(digits).rjust(DIGITS, "0")
    return [DIGIT_COLOURS[int(t)] for t in text] + [MULTIPLIER_COLOURS[exponent], TOLERANCE_COLOURS[tolerance]]


model = Model()
outline, rings = body_profile()
horizontal = mounting == "horizontal"
x0 = pitch / 2 - length / 2
axis_z = R   # horizontal: the body rests on the board
if horizontal:
    points = [(x0 + u, axis_z + v) for u, v in outline]
    axis = ((0, 0, axis_z), (1, 0, 0))
else:
    points = [(v, u) for u, v in outline]
    axis = "Z"
with model.sketch("body_sketch", on="XZ", name="Body") as sk:
    sk.polyline("body_outline", points, closed=True)
model.revolve("body", "body_sketch", axis=axis, op="new", body="body_body", name="Body")
bodies = ["body_body"]
if detail == "full":
    # Leads, swept along their bends. Horizontal: up from below the board at x = 0 and x = pitch to the body's axis, bent toward the body.
    # Vertical: lead 1 straight down from the body's bottom end; lead 2 up from the top end, over and down at x = pitch.
    if horizontal:
        legs = [(0.0, 1, x0), (pitch, -1, x0 + length)]
        for i, (x, side, x_end) in enumerate(legs, 1):
            with model.sketch(f"lead_{i}_path", on="XZ", name=f"Lead {i} path") as sk:
                sk.line(f"lead_{i}_up", (x, -tail), (x, axis_z - BEND), construction=True)
                if side > 0:
                    sk.arc(f"lead_{i}_bend", (x + BEND, axis_z - BEND), BEND, 90, 180, construction=True)
                else:
                    sk.arc(f"lead_{i}_bend", (x - BEND, axis_z - BEND), BEND, 0, 90, construction=True)
                sk.line(f"lead_{i}_along", (x + side * BEND, axis_z), (x_end, axis_z), construction=True)
            model.plane(f"lead_{i}_start", on="XY", offset=-tail, name=f"Lead {i} end")
            with model.sketch(f"lead_{i}_section", on=f"lead_{i}_start", name=f"Lead {i}") as sk:
                sk.circle(f"lead_{i}_round", (x, 0), r)
            model.sweep(f"lead_{i}", f"lead_{i}_section", f"lead_{i}_path", op="new", body=f"lead_{i}_body", name=f"Lead {i}")
            bodies.append(f"lead_{i}_body")
    else:
        model.plane("lead_1_start", on="XY", offset=-tail, name="Lead 1 end")
        with model.sketch("lead_1_section", on="lead_1_start", name="Lead 1") as sk:
            sk.circle("lead_1_round", (0, 0), r)
        model.extrude("lead_1", "lead_1_section", distance=tail, op="new", body="lead_1_body", name="Lead 1")
        top = length + LOOP
        with model.sketch("lead_2_path", on="XZ", name="Lead 2 path") as sk:
            sk.line("lead_2_up", (0, length), (0, top - BEND), construction=True)
            sk.arc("lead_2_bend_1", (BEND, top - BEND), BEND, 90, 180, construction=True)
            sk.line("lead_2_over", (BEND, top), (pitch - BEND, top), construction=True)
            sk.arc("lead_2_bend_2", (pitch - BEND, top - BEND), BEND, 0, 90, construction=True)
            sk.line("lead_2_down", (pitch, top - BEND), (pitch, -tail), construction=True)
        model.plane("lead_2_start", on="XY", offset=length, name="Lead 2 start")
        with model.sketch("lead_2_section", on="lead_2_start", name="Lead 2") as sk:
            sk.circle("lead_2_round", (0, 0), r)
        model.sweep("lead_2", "lead_2_section", "lead_2_path", op="new", body="lead_2_body", name="Lead 2")
        bodies += ["lead_1_body", "lead_2_body"]
# Materials, for looks and a rough mass: the body as its ceramic core (the sheet: "a high grade ceramic body") in the sheet's "light blue
# protective coating"; the leads copper, tin plated ("electrolytic copper plated with 100 % pure tin").
model.material("alumina", bodies=["body_body"], color="#9cc3e0")
if detail == "full":
    model.material("copper", bodies=[b for b in bodies if b.startswith("lead")], color="#c9ccd1")
    for i, colour in zip(rings, ring_colours()):
        model.appearance(color=colour, faces=[f"body.side(body_outline.side{i})"])
result = model.result()

pypart.toml 125 lines · TOML

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name = "steve/axial-resistor"

version = "1.0.0"

runtime = "steve"

license = "MIT"

summary = "Axial leaded metal film resistor, Vishay Beyschlag MBA/SMA 0204, MBB/SMA 0207 and MBE/SMA 0414, with colour rings, horizontal or vertical."

description = """Axial leaded resistor with formed leads, lying on the board or standing up. Vishay Beyschlag's professional metal film resistors in DIN sizes 0204, 0207 and 0414, with the colour rings of the resistance and tolerance. The series gives the size, from Vishay's data sheet. Lead 1 at the origin, lead 2 along +X. See the README."""

tags = ["resistor", "axial", "through-hole", "metal-film", "vishay", "electronics"]

[parameters.series]

type = "choice"

default = "MBA"

choices = ["MBA", "MBB", "MBE"]

label = "Series"

description = "MBA: DIN size 0204 (3.6 x Ø 1.6). MBB: 0207 (6.5 x Ø 2.5). MBE: 0414 (11.9 x Ø 4.2)."

[parameters.resistance]

type = "number"

default = 10000.0

min = 0.22

max = 22000000

unit = "Ω"

label = "Resistance"

description = "In the range the sheet gives for the series and tolerance; it sets the colour rings."

[parameters.tolerance]

type = "choice"

default = "F"

choices = ["D", "F", "G", "J"]

label = "Tolerance"

description = "D 0.5 %, F 1 % (five rings), G 2 %, J 5 % (four rings). One the sheet offers for this resistance."

[parameters.mounting]

type = "choice"

default = "horizontal"

choices = ["horizontal", "vertical"]

label = "Mounting"

description = "horizontal: the body lies on the board between the leads. vertical: it stands over lead 1 and lead 2 comes back down beside it."

[parameters.pitch]

type = "number"

default = 7.62

min = 1.27

max = 60

unit = "mm"

label = "Lead pitch"

description = "The board's hole spacing. Horizontal: at least the sheet's smallest bent lead spacing (5.0, 10.0, 15.0). Vertical: room for lead 2 to pass the body."

[parameters.tail]

type = "number"

default = 3.0

min = 0.5

max = 30

unit = "mm"

label = "Leads below the board"

[parameters.detail]

type = "choice"

default = "full"

choices = ["full", "simple"]

label = "Detail"

description = "full: body, colour rings and leads. simple: the body only, for big assemblies."

[[presets]]

id = "MBA-10kF-H5.08"

title = "Vishay MBA/SMA 0204, 10 kΩ ±1 %, horizontal, 5.08 mm pitch"

params = { series = "MBA", resistance = 10000, tolerance = "F", mounting = "horizontal", pitch = 5.08 }

aliases = ["Vishay MBA/SMA 0204 10k F", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "10k resistor axial 0204", "axial resistor DIN 0204 horizontal", "metal film resistor 0204"]

standard = "Vishay MBA/SMA 0204"

[[presets]]

id = "MBA-10kF-H7.62"

title = "Vishay MBA/SMA 0204, 10 kΩ ±1 %, horizontal, 7.62 mm pitch"

params = { series = "MBA", resistance = 10000, tolerance = "F", mounting = "horizontal", pitch = 7.62 }

aliases = ["Vishay MBA/SMA 0204 10k F", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "10k resistor axial 0204", "axial resistor DIN 0204 horizontal", "metal film resistor 0204"]

standard = "Vishay MBA/SMA 0204"

[[presets]]

id = "MBA-10kF-V1.9"

title = "Vishay MBA/SMA 0204, 10 kΩ ±1 %, vertical, 1.9 mm pitch"

params = { series = "MBA", resistance = 10000, tolerance = "F", mounting = "vertical", pitch = 1.9 }

aliases = ["Vishay MBA/SMA 0204 10k F", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "10k resistor axial 0204", "axial resistor DIN 0204 vertical", "metal film resistor 0204"]

standard = "Vishay MBA/SMA 0204"

[[presets]]

id = "MBA-10kF-V2.54"

title = "Vishay MBA/SMA 0204, 10 kΩ ±1 %, vertical, 2.54 mm pitch"

params = { series = "MBA", resistance = 10000, tolerance = "F", mounting = "vertical", pitch = 2.54 }

aliases = ["Vishay MBA/SMA 0204 10k F", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "10k resistor axial 0204", "axial resistor DIN 0204 vertical", "metal film resistor 0204"]

standard = "Vishay MBA/SMA 0204"

[[presets]]

id = "MBA-10kF-V5.08"

title = "Vishay MBA/SMA 0204, 10 kΩ ±1 %, vertical, 5.08 mm pitch"

params = { series = "MBA", resistance = 10000, tolerance = "F", mounting = "vertical", pitch = 5.08 }

aliases = ["Vishay MBA/SMA 0204 10k F", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "10k resistor axial 0204", "axial resistor DIN 0204 vertical", "metal film resistor 0204"]

standard = "Vishay MBA/SMA 0204"

[[presets]]

id = "MBB-10kF-H10.16"

100

title = "Vishay MBB/SMA 0207, 10 kΩ ±1 %, horizontal, 10.16 mm pitch"

101

params = { series = "MBB", resistance = 10000, tolerance = "F", mounting = "horizontal", pitch = 10.16 }

102

aliases = ["Vishay MBB/SMA 0207 10k F", "Vishay MBB 0207", "MBB 0207", "MBB0207", "SMA 0207", "10k resistor axial 0207", "axial resistor DIN 0207 horizontal", "metal film resistor 0207"]

103

standard = "Vishay MBB/SMA 0207"

104

105

[[presets]]

106

id = "MBE-10kF-H15.24"

107

title = "Vishay MBE/SMA 0414, 10 kΩ ±1 %, horizontal, 15.24 mm pitch"

108

params = { series = "MBE", resistance = 10000, tolerance = "F", mounting = "horizontal", pitch = 15.24 }

109

aliases = ["Vishay MBE/SMA 0414 10k F", "Vishay MBE 0414", "MBE 0414", "MBE0414", "SMA 0414", "10k resistor axial 0414", "axial resistor DIN 0414 horizontal", "metal film resistor 0414"]

110

standard = "Vishay MBE/SMA 0414"

111

112

[[presets]]

113

id = "MBA-R47J-H7.62"

114

title = "Vishay MBA/SMA 0204, 0.47 Ω ±5 %, horizontal, 7.62 mm pitch"

115

params = { series = "MBA", resistance = 0.47, tolerance = "J", mounting = "horizontal", pitch = 7.62 }

116

aliases = ["Vishay MBA/SMA 0204 R47 J", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "R47 resistor axial 0204", "axial resistor DIN 0204 horizontal", "metal film resistor 0204"]

117

standard = "Vishay MBA/SMA 0204"

118

119

[[presets]]

120

id = "MBB-10kF-H10.16-simple"

121

title = "Vishay MBB/SMA 0207, 10 kΩ ±1 %, horizontal, 10.16 mm pitch, simple"

122

params = { series = "MBB", resistance = 10000, tolerance = "F", mounting = "horizontal", pitch = 10.16, detail = "simple" }

123

aliases = ["Vishay MBB 0207 simple"]

124

standard = "Vishay MBB/SMA 0207"

125

name = "steve/axial-resistor"
version = "1.0.0"
runtime = "steve"
license = "MIT"
summary = "Axial leaded metal film resistor, Vishay Beyschlag MBA/SMA 0204, MBB/SMA 0207 and MBE/SMA 0414, with colour rings, horizontal or vertical."
description = """Axial leaded resistor with formed leads, lying on the board or standing up. Vishay Beyschlag's professional metal film resistors in DIN sizes 0204, 0207 and 0414, with the colour rings of the resistance and tolerance. The series gives the size, from Vishay's data sheet. Lead 1 at the origin, lead 2 along +X. See the README."""
tags = ["resistor", "axial", "through-hole", "metal-film", "vishay", "electronics"]

[parameters.series]
type = "choice"
default = "MBA"
choices = ["MBA", "MBB", "MBE"]
label = "Series"
description = "MBA: DIN size 0204 (3.6 x Ø 1.6). MBB: 0207 (6.5 x Ø 2.5). MBE: 0414 (11.9 x Ø 4.2)."

[parameters.resistance]
type = "number"
default = 10000.0
min = 0.22
max = 22000000
unit = "Ω"
label = "Resistance"
description = "In the range the sheet gives for the series and tolerance; it sets the colour rings."

[parameters.tolerance]
type = "choice"
default = "F"
choices = ["D", "F", "G", "J"]
label = "Tolerance"
description = "D 0.5 %, F 1 % (five rings), G 2 %, J 5 % (four rings). One the sheet offers for this resistance."

[parameters.mounting]
type = "choice"
default = "horizontal"
choices = ["horizontal", "vertical"]
label = "Mounting"
description = "horizontal: the body lies on the board between the leads. vertical: it stands over lead 1 and lead 2 comes back down beside it."

[parameters.pitch]
type = "number"
default = 7.62
min = 1.27
max = 60
unit = "mm"
label = "Lead pitch"
description = "The board's hole spacing. Horizontal: at least the sheet's smallest bent lead spacing (5.0, 10.0, 15.0). Vertical: room for lead 2 to pass the body."

[parameters.tail]
type = "number"
default = 3.0
min = 0.5
max = 30
unit = "mm"
label = "Leads below the board"

[parameters.detail]
type = "choice"
default = "full"
choices = ["full", "simple"]
label = "Detail"
description = "full: body, colour rings and leads. simple: the body only, for big assemblies."

[[presets]]
id = "MBA-10kF-H5.08"
title = "Vishay MBA/SMA 0204, 10 kΩ ±1 %, horizontal, 5.08 mm pitch"
params = { series = "MBA", resistance = 10000, tolerance = "F", mounting = "horizontal", pitch = 5.08 }
aliases = ["Vishay MBA/SMA 0204 10k F", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "10k resistor axial 0204", "axial resistor DIN 0204 horizontal", "metal film resistor 0204"]
standard = "Vishay MBA/SMA 0204"

[[presets]]
id = "MBA-10kF-H7.62"
title = "Vishay MBA/SMA 0204, 10 kΩ ±1 %, horizontal, 7.62 mm pitch"
params = { series = "MBA", resistance = 10000, tolerance = "F", mounting = "horizontal", pitch = 7.62 }
aliases = ["Vishay MBA/SMA 0204 10k F", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "10k resistor axial 0204", "axial resistor DIN 0204 horizontal", "metal film resistor 0204"]
standard = "Vishay MBA/SMA 0204"

[[presets]]
id = "MBA-10kF-V1.9"
title = "Vishay MBA/SMA 0204, 10 kΩ ±1 %, vertical, 1.9 mm pitch"
params = { series = "MBA", resistance = 10000, tolerance = "F", mounting = "vertical", pitch = 1.9 }
aliases = ["Vishay MBA/SMA 0204 10k F", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "10k resistor axial 0204", "axial resistor DIN 0204 vertical", "metal film resistor 0204"]
standard = "Vishay MBA/SMA 0204"

[[presets]]
id = "MBA-10kF-V2.54"
title = "Vishay MBA/SMA 0204, 10 kΩ ±1 %, vertical, 2.54 mm pitch"
params = { series = "MBA", resistance = 10000, tolerance = "F", mounting = "vertical", pitch = 2.54 }
aliases = ["Vishay MBA/SMA 0204 10k F", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "10k resistor axial 0204", "axial resistor DIN 0204 vertical", "metal film resistor 0204"]
standard = "Vishay MBA/SMA 0204"

[[presets]]
id = "MBA-10kF-V5.08"
title = "Vishay MBA/SMA 0204, 10 kΩ ±1 %, vertical, 5.08 mm pitch"
params = { series = "MBA", resistance = 10000, tolerance = "F", mounting = "vertical", pitch = 5.08 }
aliases = ["Vishay MBA/SMA 0204 10k F", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "10k resistor axial 0204", "axial resistor DIN 0204 vertical", "metal film resistor 0204"]
standard = "Vishay MBA/SMA 0204"

[[presets]]
id = "MBB-10kF-H10.16"
title = "Vishay MBB/SMA 0207, 10 kΩ ±1 %, horizontal, 10.16 mm pitch"
params = { series = "MBB", resistance = 10000, tolerance = "F", mounting = "horizontal", pitch = 10.16 }
aliases = ["Vishay MBB/SMA 0207 10k F", "Vishay MBB 0207", "MBB 0207", "MBB0207", "SMA 0207", "10k resistor axial 0207", "axial resistor DIN 0207 horizontal", "metal film resistor 0207"]
standard = "Vishay MBB/SMA 0207"

[[presets]]
id = "MBE-10kF-H15.24"
title = "Vishay MBE/SMA 0414, 10 kΩ ±1 %, horizontal, 15.24 mm pitch"
params = { series = "MBE", resistance = 10000, tolerance = "F", mounting = "horizontal", pitch = 15.24 }
aliases = ["Vishay MBE/SMA 0414 10k F", "Vishay MBE 0414", "MBE 0414", "MBE0414", "SMA 0414", "10k resistor axial 0414", "axial resistor DIN 0414 horizontal", "metal film resistor 0414"]
standard = "Vishay MBE/SMA 0414"

[[presets]]
id = "MBA-R47J-H7.62"
title = "Vishay MBA/SMA 0204, 0.47 Ω ±5 %, horizontal, 7.62 mm pitch"
params = { series = "MBA", resistance = 0.47, tolerance = "J", mounting = "horizontal", pitch = 7.62 }
aliases = ["Vishay MBA/SMA 0204 R47 J", "Vishay MBA 0204", "MBA 0204", "MBA0204", "SMA 0204", "R47 resistor axial 0204", "axial resistor DIN 0204 horizontal", "metal film resistor 0204"]
standard = "Vishay MBA/SMA 0204"

[[presets]]
id = "MBB-10kF-H10.16-simple"
title = "Vishay MBB/SMA 0207, 10 kΩ ±1 %, horizontal, 10.16 mm pitch, simple"
params = { series = "MBB", resistance = 10000, tolerance = "F", mounting = "horizontal", pitch = 10.16, detail = "simple" }
aliases = ["Vishay MBB 0207 simple"]
standard = "Vishay MBB/SMA 0207"

README.md 57 lines · Markdown

Download

Axial resistor

An axial leaded metal film resistor with formed leads. Lead 1 is at the origin, lead 2 is at +X by the pitch, and the leads go down through the board.

Horizontal: the body lies on the board along X, centred between the leads. The leads come out of its ends at the body's axis and bend down.
Vertical: the body stands on the board over lead 1. Lead 2 leaves the top end, turns over and comes down at the pitch.

The series is Vishay Beyschlag's professional metal film resistor in one DIN size. The resistance and tolerance set the colour rings.

Series	DIN size	Body length max	Body Ø max	Lead Ø	Smallest bent lead spacing
MBA/SMA 0204	0204	3.6	1.6	0.5	5.0
MBB/SMA 0207	0207	6.5	2.5	0.6	10.0
MBE/SMA 0414	0414	11.9	4.2	0.8	15.0

Resistance ranges (Ω), by tolerance:

Series	± 5 % (J)	± 2 % (G)	± 1 % (F)	± 0.5 % (D)
MBA	0.22 to 0.91		1 to 10 M	10 to 475 k
MBB	0.22 to 0.91, 11 M to 22 M	0.22 to 0.91	1 to 10 M	10 to 1 M
MBE	0.22 to 0.91		1 to 22 M	10 to 2.43 M

The sheet says values come from E24 for ± 5 % and ± 2 %, E24 or E96 for ± 1 %, and E24 or E192 for ± 0.5 %. This part checks the range, and that the value can be written in the rings: two digits for ± 5 % and ± 2 %, three for ± 1 % and ± 0.5 %.

Source

Vishay Beyschlag, "MBA/SMA 0204, MBB/SMA 0207, MBE/SMA 0414 - Professional Metal Film Leaded Resistors", document number 28766, revision 11-Jul-2018, from Vishay's own site: https://www.vishay.com/docs/28766/mbxsma.pdf.

Page 13, table "DIMENSIONS - Leaded resistor types, mass and relevant physical dimensions": D max, L max, d nom and M min (the first table above).
Page 3, "TEMPERATURE COEFFICIENT AND RESISTANCE RANGE - Standard Products": the ± 50 ppm/K ranges (the second table). The ± 25 ppm/K ranges lie inside them.
Page 7, "DESCRIPTION": a high grade ceramic body, plated steel caps, tin plated copper leads, "a light blue protective coating", and "four or five color code rings" to IEC 60062.

The rings follow IEC 60062: two or three digit rings, a multiplier ring (gold x0.1, silver x0.01) and a tolerance ring (green D, brown F, red G, gold J).

Proportions, for looks only:

The sheet draws the body but dimensions only its diameter and length. The end caps are each 0.25 x the length at the full diameter, with their outer edges rounded by 0.25 x the radius. The coated middle is 0.9 x the diameter, reached over 0.05 x the length.
Each ring is 0.08 x the length wide. The first ring is on the lead-1 cap, the tolerance ring on the other cap, and the rest are spread evenly over the middle.
The leads bend with a radius of one lead diameter. Vertical lead 2 rises 2.0 above the body before it turns. The body touches the board. The leads end 3.0 below the board by default (tail).
The body is drawn as its ceramic core in the sheet's light blue. Its colour is for looks.

Horizontal mounting needs the sheet's smallest bent lead spacing (M min), and room for the body plus two bend radii. Vertical mounting needs lead 2 to clear the body: half its diameter plus half the lead's.

Catalogue models

The catalogue's R_Axial_DIN0204_L3.6mm_D1.6mm_... models map to MBA/SMA 0204, at the model's own pitch and mounting. Each preset shows 10 kΩ ± 1 %. Measured on the reference models: the body is 3.6 long and Ø 1.6 at the caps, with a middle of Ø 1.44, and the leads are Ø 0.5. That's the sheet's maximum and its lead. The horizontal bodies touch the board. The vertical ones stand about 0.9 above it, where this part's touch it. The leads end 3.0 below the board.

MBB/SMA 0207 and MBE/SMA 0414 have no catalogue model of their size, so they're extra presets lying on the board at the 2.54 mm grid pitch nearest above the smallest bent lead spacing.

The catalogue's DIN 0207 and DIN 0414 models aren't here yet. No maker's table read so far matches their bodies:

DIN 0207: measured 6.3 long and Ø 2.5 at the caps, leads Ø 0.6. Vishay MBB/SMA 0207 is 6.5 x Ø 2.5 max. KOA Speer MF1/4 (sheet "MF, MFS, RK", dated 10/27/25) is 6.3 ± 0.5 x Ø 2.3 ± 0.3.
DIN 0414: measured 11.9 long and Ø 4.5 at the caps, leads Ø 0.8. Vishay MBE/SMA 0414 is 11.9 x Ø 4.2 max. KOA Speer's sheet has no 0414 size.

The other DIN sizes, power, shunt, box, radial and array resistors aren't here yet either; see COVERAGE.md.

# Axial resistor

An axial leaded metal film resistor with formed leads. Lead 1 is at the origin, lead 2 is at +X by the pitch, and the leads go down through the board.

- **Horizontal:** the body lies on the board along X, centred between the leads. The leads come out of its ends at the body's axis and bend down.

- **Vertical:** the body stands on the board over lead 1. Lead 2 leaves the top end, turns over and comes down at the pitch.

The series is Vishay Beyschlag's professional metal film resistor in one DIN size. The resistance and tolerance set the colour rings.

|---|---|---|---|---|---|

| MBA/SMA 0204 | 0204 | 3.6 | 1.6 | 0.5 | 5.0 |

| MBB/SMA 0207 | 0207 | 6.5 | 2.5 | 0.6 | 10.0 |

| MBE/SMA 0414 | 0414 | 11.9 | 4.2 | 0.8 | 15.0 |

Resistance ranges (Ω), by tolerance:

| Series | ± 5 % (J) | ± 2 % (G) | ± 1 % (F) | ± 0.5 % (D) |

|---|---|---|---|---|

| MBA | 0.22 to 0.91 | | 1 to 10 M | 10 to 475 k |

| MBB | 0.22 to 0.91, 11 M to 22 M | 0.22 to 0.91 | 1 to 10 M | 10 to 1 M |

| MBE | 0.22 to 0.91 | | 1 to 22 M | 10 to 2.43 M |

## Source

- Page 13, table "DIMENSIONS - Leaded resistor types, mass and relevant physical dimensions": D max, L max, d nom and M min (the first table above).

- Page 3, "TEMPERATURE COEFFICIENT AND RESISTANCE RANGE - Standard Products": the ± 50 ppm/K ranges (the second table). The ± 25 ppm/K ranges lie inside them.

- Page 7, "DESCRIPTION": a high grade ceramic body, plated steel caps, tin plated copper leads, "a light blue protective coating", and "four or five color code rings" to IEC 60062.

The rings follow IEC 60062: two or three digit rings, a multiplier ring (gold x0.1, silver x0.01) and a tolerance ring (green D, brown F, red G, gold J).

**Proportions, for looks only:**

- The sheet draws the body but dimensions only its diameter and length. The end caps are each 0.25 x the length at the full diameter, with their outer edges rounded by 0.25 x the radius. The coated middle is 0.9 x the diameter, reached over 0.05 x the length.

- Each ring is 0.08 x the length wide. The first ring is on the lead-1 cap, the tolerance ring on the other cap, and the rest are spread evenly over the middle.

- The leads bend with a radius of one lead diameter. Vertical lead 2 rises 2.0 above the body before it turns. The body touches the board. The leads end 3.0 below the board by default (`tail`).

- The body is drawn as its ceramic core in the sheet's light blue. Its colour is for looks.

## Catalogue models

The catalogue's `R_Axial_DIN0204_L3.6mm_D1.6mm_...` models map to MBA/SMA 0204, at the model's own pitch and mounting. Each preset shows 10 kΩ ± 1 %. Measured on the reference models: the body is 3.6 long and Ø 1.6 at the caps, with a middle of Ø 1.44, and the leads are Ø 0.5. That's the sheet's maximum and its lead. The horizontal bodies touch the board. The vertical ones stand about 0.9 above it, where this part's touch it. The leads end 3.0 below the board.

MBB/SMA 0207 and MBE/SMA 0414 have no catalogue model of their size, so they're extra presets lying on the board at the 2.54 mm grid pitch nearest above the smallest bent lead spacing.

The catalogue's DIN 0207 and DIN 0414 models aren't here yet. No maker's table read so far matches their bodies:

- DIN 0207: measured 6.3 long and Ø 2.5 at the caps, leads Ø 0.6. Vishay MBB/SMA 0207 is 6.5 x Ø 2.5 max. KOA Speer MF1/4 (sheet "MF, MFS, RK", dated 10/27/25) is 6.3 ± 0.5 x Ø 2.3 ± 0.3.

- DIN 0414: measured 11.9 long and Ø 4.5 at the caps, leads Ø 0.8. Vishay MBE/SMA 0414 is 11.9 x Ø 4.2 max. KOA Speer's sheet has no 0414 size.

The other DIN sizes, power, shunt, box, radial and array resistors aren't here yet either; see `COVERAGE.md`.

# Axial resistor

An axial leaded metal film resistor with formed leads. Lead 1 is at the origin, lead 2 is at +X by the pitch, and the leads go down through the board.

- **Horizontal:** the body lies on the board along X, centred between the leads. The leads come out of its ends at the body's axis and bend down.
- **Vertical:** the body stands on the board over lead 1. Lead 2 leaves the top end, turns over and comes down at the pitch.

The series is Vishay Beyschlag's professional metal film resistor in one DIN size. The resistance and tolerance set the colour rings.

| Series | DIN size | Body length max | Body Ø max | Lead Ø | Smallest bent lead spacing |
|---|---|---|---|---|---|
| MBA/SMA 0204 | 0204 | 3.6 | 1.6 | 0.5 | 5.0 |
| MBB/SMA 0207 | 0207 | 6.5 | 2.5 | 0.6 | 10.0 |
| MBE/SMA 0414 | 0414 | 11.9 | 4.2 | 0.8 | 15.0 |

Resistance ranges (Ω), by tolerance:

| Series | ± 5 % (J) | ± 2 % (G) | ± 1 % (F) | ± 0.5 % (D) |
|---|---|---|---|---|
| MBA | 0.22 to 0.91 | | 1 to 10 M | 10 to 475 k |
| MBB | 0.22 to 0.91, 11 M to 22 M | 0.22 to 0.91 | 1 to 10 M | 10 to 1 M |
| MBE | 0.22 to 0.91 | | 1 to 22 M | 10 to 2.43 M |

The sheet says values come from E24 for ± 5 % and ± 2 %, E24 or E96 for ± 1 %, and E24 or E192 for ± 0.5 %. This part checks the range, and that the value can be written in the rings: two digits for ± 5 % and ± 2 %, three for ± 1 % and ± 0.5 %.

## Source

Vishay Beyschlag, "MBA/SMA 0204, MBB/SMA 0207, MBE/SMA 0414 - Professional Metal Film Leaded Resistors", document number 28766, revision 11-Jul-2018, from Vishay's own site: <https://www.vishay.com/docs/28766/mbxsma.pdf>.

- Page 13, table "DIMENSIONS - Leaded resistor types, mass and relevant physical dimensions": D max, L max, d nom and M min (the first table above).
- Page 3, "TEMPERATURE COEFFICIENT AND RESISTANCE RANGE - Standard Products": the ± 50 ppm/K ranges (the second table). The ± 25 ppm/K ranges lie inside them.
- Page 7, "DESCRIPTION": a high grade ceramic body, plated steel caps, tin plated copper leads, "a light blue protective coating", and "four or five color code rings" to IEC 60062.

The rings follow IEC 60062: two or three digit rings, a multiplier ring (gold x0.1, silver x0.01) and a tolerance ring (green D, brown F, red G, gold J).

**Proportions, for looks only:**

- The sheet draws the body but dimensions only its diameter and length. The end caps are each 0.25 x the length at the full diameter, with their outer edges rounded by 0.25 x the radius. The coated middle is 0.9 x the diameter, reached over 0.05 x the length.
- Each ring is 0.08 x the length wide. The first ring is on the lead-1 cap, the tolerance ring on the other cap, and the rest are spread evenly over the middle.
- The leads bend with a radius of one lead diameter. Vertical lead 2 rises 2.0 above the body before it turns. The body touches the board. The leads end 3.0 below the board by default (`tail`).
- The body is drawn as its ceramic core in the sheet's light blue. Its colour is for looks.

Horizontal mounting needs the sheet's smallest bent lead spacing (M min), and room for the body plus two bend radii. Vertical mounting needs lead 2 to clear the body: half its diameter plus half the lead's.

## Catalogue models

The catalogue's `R_Axial_DIN0204_L3.6mm_D1.6mm_...` models map to MBA/SMA 0204, at the model's own pitch and mounting. Each preset shows 10 kΩ ± 1 %. Measured on the reference models: the body is 3.6 long and Ø 1.6 at the caps, with a middle of Ø 1.44, and the leads are Ø 0.5. That's the sheet's maximum and its lead. The horizontal bodies touch the board. The vertical ones stand about 0.9 above it, where this part's touch it. The leads end 3.0 below the board.

MBB/SMA 0207 and MBE/SMA 0414 have no catalogue model of their size, so they're extra presets lying on the board at the 2.54 mm grid pitch nearest above the smallest bent lead spacing.

The catalogue's DIN 0207 and DIN 0414 models aren't here yet. No maker's table read so far matches their bodies:

- DIN 0207: measured 6.3 long and Ø 2.5 at the caps, leads Ø 0.6. Vishay MBB/SMA 0207 is 6.5 x Ø 2.5 max. KOA Speer MF1/4 (sheet "MF, MFS, RK", dated 10/27/25) is 6.3 ± 0.5 x Ø 2.3 ± 0.3.
- DIN 0414: measured 11.9 long and Ø 4.5 at the caps, leads Ø 0.8. Vishay MBE/SMA 0414 is 11.9 x Ø 4.2 max. KOA Speer's sheet has no 0414 size.

The other DIN sizes, power, shunt, box, radial and array resistors aren't here yet either; see `COVERAGE.md`.

Use this part

STEVE

Open in STEVE

Open it in STEVE The STEVE runtime runs in STEVE: open the part there, or download the code and bundle.

Get the code

curl -o part.py "https://pythonparts.org/p/steve/axial-resistor/v/1.0.0/raw/part.py"

Raw files, bundle and API

part.py
pypart.toml
README.md
bundle.tar.gzthe package, as published

curl "https://pythonparts.org/api/v1/parts/steve/axial-resistor/1.0.0"

The version's JSON (parameters, presets, files); add /build?name=value for a build at other values.

About this part

steve115 parts

Profile

Alumina (aluminum oxide)Ceramics · Custom finish · 4 g/cm³
Copper (pure)Copper alloys · Custom finish · 8.96 g/cm³

Mass: 0.046 g

At the parameters shown in the viewer, 3 bodies.

License: MIT

Permissive: use, change and sell it; keep the copyright notice.

Runtime: STEVE
Requirements: None stated in the code
Built with: CadQuery 2.9.0.dev0
Published: Nov 6, 2026
Downloads: 0
Builds: 0
Stars: 0
Bundle: 2f62d34c6974…

#resistor #axial #through-hole #metal-film #vishay #electronics

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Axial leaded resistor with formed leads, lying on the board or standing up. Vishay Beyschlag's professional metal film resistors in DIN sizes 0204, 0207 and 0414, with the colour rings of the resistance and tolerance. The series gives the size, from Vishay's data sheet. Lead 1 at the origin, lead 2 along +X. See the README.

Axial resistor

An axial leaded metal film resistor with formed leads. Lead 1 is at the origin, lead 2 is at +X by the pitch, and the leads go down through the board.

Horizontal: the body lies on the board along X, centred between the leads. The leads come out of its ends at the body's axis and bend down.
Vertical: the body stands on the board over lead 1. Lead 2 leaves the top end, turns over and comes down at the pitch.

The series is Vishay Beyschlag's professional metal film resistor in one DIN size. The resistance and tolerance set the colour rings.

Series	DIN size	Body length max	Body Ø max	Lead Ø	Smallest bent lead spacing
MBA/SMA 0204	0204	3.6	1.6	0.5	5.0
MBB/SMA 0207	0207	6.5	2.5	0.6	10.0
MBE/SMA 0414	0414	11.9	4.2	0.8	15.0

Resistance ranges (Ω), by tolerance:

Series	± 5 % (J)	± 2 % (G)	± 1 % (F)	± 0.5 % (D)
MBA	0.22 to 0.91		1 to 10 M	10 to 475 k
MBB	0.22 to 0.91, 11 M to 22 M	0.22 to 0.91	1 to 10 M	10 to 1 M
MBE	0.22 to 0.91		1 to 22 M	10 to 2.43 M

Source

Page 13, table "DIMENSIONS - Leaded resistor types, mass and relevant physical dimensions": D max, L max, d nom and M min (the first table above).
Page 3, "TEMPERATURE COEFFICIENT AND RESISTANCE RANGE - Standard Products": the ± 50 ppm/K ranges (the second table). The ± 25 ppm/K ranges lie inside them.
Page 7, "DESCRIPTION": a high grade ceramic body, plated steel caps, tin plated copper leads, "a light blue protective coating", and "four or five color code rings" to IEC 60062.

The rings follow IEC 60062: two or three digit rings, a multiplier ring (gold x0.1, silver x0.01) and a tolerance ring (green D, brown F, red G, gold J).

Proportions, for looks only:

The sheet draws the body but dimensions only its diameter and length. The end caps are each 0.25 x the length at the full diameter, with their outer edges rounded by 0.25 x the radius. The coated middle is 0.9 x the diameter, reached over 0.05 x the length.
Each ring is 0.08 x the length wide. The first ring is on the lead-1 cap, the tolerance ring on the other cap, and the rest are spread evenly over the middle.
The leads bend with a radius of one lead diameter. Vertical lead 2 rises 2.0 above the body before it turns. The body touches the board. The leads end 3.0 below the board by default (tail).
The body is drawn as its ceramic core in the sheet's light blue. Its colour is for looks.

Catalogue models

MBB/SMA 0207 and MBE/SMA 0414 have no catalogue model of their size, so they're extra presets lying on the board at the 2.54 mm grid pitch nearest above the smallest bent lead spacing.

The catalogue's DIN 0207 and DIN 0414 models aren't here yet. No maker's table read so far matches their bodies:

DIN 0207: measured 6.3 long and Ø 2.5 at the caps, leads Ø 0.6. Vishay MBB/SMA 0207 is 6.5 x Ø 2.5 max. KOA Speer MF1/4 (sheet "MF, MFS, RK", dated 10/27/25) is 6.3 ± 0.5 x Ø 2.3 ± 0.3.
DIN 0414: measured 11.9 long and Ø 4.5 at the caps, leads Ø 0.8. Vishay MBE/SMA 0414 is 11.9 x Ø 4.2 max. KOA Speer's sheet has no 0414 size.

The other DIN sizes, power, shunt, box, radial and array resistors aren't here yet either; see COVERAGE.md.

1.0.0 Latest Nov 6, 2026 · 2 hours ago

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Axial resistor

Source

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Axial resistor

Source

Catalogue models

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