steve/tht-led

Through-hole round LEDs from Vishay's drawings: 5 mm (T-1 3/4, TLHx5400) and 3 mm (T-1, TLHx4400), red, yellow or green.

v1.0.1 Latest STEVE MIT 0

Open in STEVE

Isometric

Parameters

Preset6 sizes

Package

5mm3mm

Lens colour

redyellowgreen

Leads below the board0.5–30 mm

Defaults built

part.py 65 lines · Python · STEVE runtime · checked

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"""Through-hole round LED with two straight leads, Vishay's 5 mm (T-1 3/4) and 3 mm (T-1) packages, standing on the board at its lead

standoffs. The body's axis is the Z axis, the cathode lead at -X and the anode at +X (2.54 nom. apart); the 5 mm flange's flat is on the

cathode side. The board's top face is the XY plane. Dimensions from Vishay's data sheets, listed in the README."""

import math

from steve import Model

package = "5mm" # Package

color = "red" # Lens colour (tinted diffused)

tail = 3.0 # mm Leads below the board

# Each entry: (body diameter, flange diameter, flange thickness, height from the flange's underside to the top, dome radius,

# standoff below the flange's underside (the leads' kink, where the part seats: 12.5 - 8.7 and 5.8 - 4.4), lead spacing, lead size along X, lead size along Y), mm.

# Vishay "TLHR540., TLHY540., TLHG540." Rev. 2.6, 09-Sep-2022, document 83012 (www.vishay.com/docs/83012/tlhg540.pdf), page 7,

# "Package dimensions": body Ø 5 +/-0.15, flange Ø 5.8 +/-0.15, 8.7 +/-0.3 and 7.7 +/-0.15 from the top to the flange's underside and

# top face, R 2.49 (sphere), 12.5 +/-0.3 from the top to the leads' kink, leads 0.5 +0.15/-0.05 square, 2.54 nom. apart.

# Vishay "TLHR440., TLHO440., TLHY440., TLHG440." Rev. 3.8, 21-Mar-2023, document 83006 (www.vishay.com/doc?83006), page 9, "Package

# dimensions": body Ø 2.9 +/-0.15, flange Ø 3.2 +/-0.15, 4.4 +/-0.3 and 3.4 +/-0.15, R 1.4 (sphere), 5.8 +/-0.3 to the kink, leads

# 0.5 x 0.4, 2.54 nom. apart.

PACKAGES = {

"5mm": (5.0, 5.8, 1.0, 8.7, 2.49, 3.8, 2.54, 0.5, 0.5),

"3mm": (2.9, 3.2, 1.0, 4.4, 1.4, 1.4, 2.54, 0.5, 0.4),

}

# Part numbers by package and colour (the sheets' tables), for the README: 5mm TLHR5400, TLHY5400, TLHG5400; 3mm TLHR4400, TLHY4400,

# TLHG4400.

COLORS = {"red": "#c8202a", "yellow": "#e8c21c", "green": "#3fa34d"}

# Proportion, for looks (the 5 mm top view draws the flange's flat but doesn't dimension it): the flat is 0.88 x the flange's radius from

# its centre. The 3 mm top view draws no flat.

FLAT = 0.88

if package not in PACKAGES:

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

if color not in COLORS:

raise ValueError(f"no colour {color!r}: {', '.join(COLORS)}")

Db, Df, tf, H, Rd, stand, pitch, lx, ly = PACKAGES[package]

Rb, Rf = Db / 2, Df / 2

z0 = stand

top = z0 + H

model = Model()

# Body: the flange, the cylinder and the dome (a sphere of radius R meeting the cylinder), revolved about the axis.

dome = [(Rd * math.cos(math.radians(a)), top - Rd + Rd * math.sin(math.radians(a))) for a in range(0, 90, 10)]

section = [(0, z0), (Rf, z0), (Rf, z0 + tf), (Rb, z0 + tf), (Rb, top - Rd)] + ([(Rd, top - Rd)] if Rd < Rb else []) + dome[1:] + [(0, top)]

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

sk.polyline("body_section", section, closed=True)

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

if package == "5mm":

# The flange's flat on the cathode (-X) side.

with model.sketch("flat_sketch", on="XY", name="Flange flat") as sk:

sk.rect("flat_rect", (-Rf - 1, -Rf - 1), (-FLAT * Rf, Rf + 1))

model.extrude("flat", "flat_sketch", distance=z0 + tf, op="cut", body="body_body", name="Flange flat")

# Leads: straight, from the tail below the board up to the flange's underside.

leads = []

for name, sx in (("cathode", -1), ("anode", 1)):

model.plane(f"{name}_plane", on="XY", offset=-tail, name=f"{name.title()} lead")

with model.sketch(f"{name}_sketch", on=f"{name}_plane", name=f"{name.title()} lead") as sk:

sk.rect(f"{name}_rect", (sx * pitch / 2 - lx / 2, -ly / 2), (sx * pitch / 2 + lx / 2, ly / 2))

model.extrude(f"{name}_lead", f"{name}_sketch", distance=tail + z0, op="new", body=f"{name}_body", name=f"{name.title()} lead")

leads.append(f"{name}_body")

# Materials, for looks and a rough mass: the body is tinted epoxy resin (density about 1.2), shown as pmma (1.18), the nearest clear

# plastic in the material list, in the lens colour; the leads are tin-plated steel or copper alloy (the sheets don't say), shown as copper.

model.material("pmma", bodies=["body_body"], color=COLORS[color])

model.material("copper", bodies=leads, color="#c9ccd1")

result = model.result()

"""Through-hole round LED with two straight leads, Vishay's 5 mm (T-1 3/4) and 3 mm (T-1) packages, standing on the board at its lead
standoffs. The body's axis is the Z axis, the cathode lead at -X and the anode at +X (2.54 nom. apart); the 5 mm flange's flat is on the
cathode side. The board's top face is the XY plane. Dimensions from Vishay's data sheets, listed in the README."""
import math

from steve import Model

package = "5mm"  # Package
color = "red"  # Lens colour (tinted diffused)
tail = 3.0  # mm Leads below the board

# Each entry: (body diameter, flange diameter, flange thickness, height from the flange's underside to the top, dome radius,
# standoff below the flange's underside (the leads' kink, where the part seats: 12.5 - 8.7 and 5.8 - 4.4), lead spacing, lead size along X, lead size along Y), mm.
#   Vishay "TLHR540., TLHY540., TLHG540." Rev. 2.6, 09-Sep-2022, document 83012 (www.vishay.com/docs/83012/tlhg540.pdf), page 7,
#     "Package dimensions": body Ø 5 +/-0.15, flange Ø 5.8 +/-0.15, 8.7 +/-0.3 and 7.7 +/-0.15 from the top to the flange's underside and
#     top face, R 2.49 (sphere), 12.5 +/-0.3 from the top to the leads' kink, leads 0.5 +0.15/-0.05 square, 2.54 nom. apart.
#   Vishay "TLHR440., TLHO440., TLHY440., TLHG440." Rev. 3.8, 21-Mar-2023, document 83006 (www.vishay.com/doc?83006), page 9, "Package
#     dimensions": body Ø 2.9 +/-0.15, flange Ø 3.2 +/-0.15, 4.4 +/-0.3 and 3.4 +/-0.15, R 1.4 (sphere), 5.8 +/-0.3 to the kink, leads
#     0.5 x 0.4, 2.54 nom. apart.
PACKAGES = {
    "5mm": (5.0, 5.8, 1.0, 8.7, 2.49, 3.8, 2.54, 0.5, 0.5),
    "3mm": (2.9, 3.2, 1.0, 4.4, 1.4, 1.4, 2.54, 0.5, 0.4),
}
# Part numbers by package and colour (the sheets' tables), for the README: 5mm TLHR5400, TLHY5400, TLHG5400; 3mm TLHR4400, TLHY4400,
# TLHG4400.
COLORS = {"red": "#c8202a", "yellow": "#e8c21c", "green": "#3fa34d"}
# Proportion, for looks (the 5 mm top view draws the flange's flat but doesn't dimension it): the flat is 0.88 x the flange's radius from
# its centre. The 3 mm top view draws no flat.
FLAT = 0.88

if package not in PACKAGES:
    raise ValueError(f"no package {package!r}: {', '.join(PACKAGES)}")
if color not in COLORS:
    raise ValueError(f"no colour {color!r}: {', '.join(COLORS)}")
Db, Df, tf, H, Rd, stand, pitch, lx, ly = PACKAGES[package]
Rb, Rf = Db / 2, Df / 2
z0 = stand
top = z0 + H

model = Model()
# Body: the flange, the cylinder and the dome (a sphere of radius R meeting the cylinder), revolved about the axis.
dome = [(Rd * math.cos(math.radians(a)), top - Rd + Rd * math.sin(math.radians(a))) for a in range(0, 90, 10)]
section = [(0, z0), (Rf, z0), (Rf, z0 + tf), (Rb, z0 + tf), (Rb, top - Rd)] + ([(Rd, top - Rd)] if Rd < Rb else []) + dome[1:] + [(0, top)]
with model.sketch("body_sketch", on="XZ", name="Body") as sk:
    sk.polyline("body_section", section, closed=True)
model.revolve("body", "body_sketch", axis="Z", op="new", body="body_body", name="Body")
if package == "5mm":
    # The flange's flat on the cathode (-X) side.
    with model.sketch("flat_sketch", on="XY", name="Flange flat") as sk:
        sk.rect("flat_rect", (-Rf - 1, -Rf - 1), (-FLAT * Rf, Rf + 1))
    model.extrude("flat", "flat_sketch", distance=z0 + tf, op="cut", body="body_body", name="Flange flat")
# Leads: straight, from the tail below the board up to the flange's underside.
leads = []
for name, sx in (("cathode", -1), ("anode", 1)):
    model.plane(f"{name}_plane", on="XY", offset=-tail, name=f"{name.title()} lead")
    with model.sketch(f"{name}_sketch", on=f"{name}_plane", name=f"{name.title()} lead") as sk:
        sk.rect(f"{name}_rect", (sx * pitch / 2 - lx / 2, -ly / 2), (sx * pitch / 2 + lx / 2, ly / 2))
    model.extrude(f"{name}_lead", f"{name}_sketch", distance=tail + z0, op="new", body=f"{name}_body", name=f"{name.title()} lead")
    leads.append(f"{name}_body")
# Materials, for looks and a rough mass: the body is tinted epoxy resin (density about 1.2), shown as pmma (1.18), the nearest clear
# plastic in the material list, in the lens colour; the leads are tin-plated steel or copper alloy (the sheets don't say), shown as copper.
model.material("pmma", bodies=["body_body"], color=COLORS[color])
model.material("copper", bodies=leads, color="#c9ccd1")
result = model.result()

pypart.toml 70 lines · TOML

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name = "steve/tht-led"

version = "1.0.1"

runtime = "steve"

license = "MIT"

summary = "Through-hole round LEDs from Vishay's drawings: 5 mm (T-1 3/4, TLHx5400) and 3 mm (T-1, TLHx4400), red, yellow or green."

description = """Through-hole round LED with two straight leads, standing on the board at its lead standoffs, from Vishay's package drawings: the 5 mm (T-1 3/4) TLHR5400, TLHY5400 and TLHG5400, with the flange's flat on the cathode side, and the 3 mm (T-1) TLHR4400, TLHY4400 and TLHG4400. Tinted diffused lens in red, yellow or green. Cathode lead at -X, the body's axis on Z. See the README."""

tags = ["led", "through-hole", "t-1", "t-1-3-4", "vishay", "electronics"]

[parameters.package]

type = "choice"

default = "5mm"

choices = ["5mm", "3mm"]

label = "Package"

[parameters.color]

type = "choice"

default = "red"

choices = ["red", "yellow", "green"]

label = "Lens colour"

[parameters.tail]

type = "number"

default = 3.0

min = 0.5

max = 30

unit = "mm"

label = "Leads below the board"

[[presets]]

id = "5mm-red"

title = "Vishay TLHR5400, 5 mm (T-1 3/4) round LED, red, tinted diffused"

params = { package = "5mm", color = "red" }

aliases = ["Vishay TLHR5400", "TLHR5400", "5 mm (T-1 3/4) red LED", "5mm red LED", "5 mm (T-1 3/4) LED", "LED_D5.0mm"]

standard = "Vishay TLHR54"

[[presets]]

id = "5mm-yellow"

title = "Vishay TLHY5400, 5 mm (T-1 3/4) round LED, yellow, tinted diffused"

params = { package = "5mm", color = "yellow" }

aliases = ["Vishay TLHY5400", "TLHY5400", "5 mm (T-1 3/4) yellow LED", "5mm yellow LED", "5 mm (T-1 3/4) LED", "LED_D5.0mm_Yellow"]

standard = "Vishay TLHY54"

[[presets]]

id = "5mm-green"

title = "Vishay TLHG5400, 5 mm (T-1 3/4) round LED, green, tinted diffused"

params = { package = "5mm", color = "green" }

aliases = ["Vishay TLHG5400", "TLHG5400", "5 mm (T-1 3/4) green LED", "5mm green LED", "5 mm (T-1 3/4) LED", "LED_D5.0mm_Green"]

standard = "Vishay TLHG54"

[[presets]]

id = "3mm-red"

title = "Vishay TLHR4400, 3 mm (T-1) round LED, red, tinted diffused"

params = { package = "3mm", color = "red" }

aliases = ["Vishay TLHR4400", "TLHR4400", "3 mm (T-1) red LED", "3mm red LED", "3 mm (T-1) LED", "LED_D3.0mm"]

standard = "Vishay TLHR44"

[[presets]]

id = "3mm-yellow"

title = "Vishay TLHY4400, 3 mm (T-1) round LED, yellow, tinted diffused"

params = { package = "3mm", color = "yellow" }

aliases = ["Vishay TLHY4400", "TLHY4400", "3 mm (T-1) yellow LED", "3mm yellow LED", "3 mm (T-1) LED", "LED_D3.0mm_Yellow"]

standard = "Vishay TLHY44"

[[presets]]

id = "3mm-green"

title = "Vishay TLHG4400, 3 mm (T-1) round LED, green, tinted diffused"

params = { package = "3mm", color = "green" }

aliases = ["Vishay TLHG4400", "TLHG4400", "3 mm (T-1) green LED", "3mm green LED", "3 mm (T-1) LED", "LED_D3.0mm_Green"]

standard = "Vishay TLHG44"

name = "steve/tht-led"
version = "1.0.1"
runtime = "steve"
license = "MIT"
summary = "Through-hole round LEDs from Vishay's drawings: 5 mm (T-1 3/4, TLHx5400) and 3 mm (T-1, TLHx4400), red, yellow or green."
description = """Through-hole round LED with two straight leads, standing on the board at its lead standoffs, from Vishay's package drawings: the 5 mm (T-1 3/4) TLHR5400, TLHY5400 and TLHG5400, with the flange's flat on the cathode side, and the 3 mm (T-1) TLHR4400, TLHY4400 and TLHG4400. Tinted diffused lens in red, yellow or green. Cathode lead at -X, the body's axis on Z. See the README."""
tags = ["led", "through-hole", "t-1", "t-1-3-4", "vishay", "electronics"]

[parameters.package]
type = "choice"
default = "5mm"
choices = ["5mm", "3mm"]
label = "Package"

[parameters.color]
type = "choice"
default = "red"
choices = ["red", "yellow", "green"]
label = "Lens colour"

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

[[presets]]
id = "5mm-red"
title = "Vishay TLHR5400, 5 mm (T-1 3/4) round LED, red, tinted diffused"
params = { package = "5mm", color = "red" }
aliases = ["Vishay TLHR5400", "TLHR5400", "5 mm (T-1 3/4) red LED", "5mm red LED", "5 mm (T-1 3/4) LED", "LED_D5.0mm"]
standard = "Vishay TLHR54"

[[presets]]
id = "5mm-yellow"
title = "Vishay TLHY5400, 5 mm (T-1 3/4) round LED, yellow, tinted diffused"
params = { package = "5mm", color = "yellow" }
aliases = ["Vishay TLHY5400", "TLHY5400", "5 mm (T-1 3/4) yellow LED", "5mm yellow LED", "5 mm (T-1 3/4) LED", "LED_D5.0mm_Yellow"]
standard = "Vishay TLHY54"

[[presets]]
id = "5mm-green"
title = "Vishay TLHG5400, 5 mm (T-1 3/4) round LED, green, tinted diffused"
params = { package = "5mm", color = "green" }
aliases = ["Vishay TLHG5400", "TLHG5400", "5 mm (T-1 3/4) green LED", "5mm green LED", "5 mm (T-1 3/4) LED", "LED_D5.0mm_Green"]
standard = "Vishay TLHG54"

[[presets]]
id = "3mm-red"
title = "Vishay TLHR4400, 3 mm (T-1) round LED, red, tinted diffused"
params = { package = "3mm", color = "red" }
aliases = ["Vishay TLHR4400", "TLHR4400", "3 mm (T-1) red LED", "3mm red LED", "3 mm (T-1) LED", "LED_D3.0mm"]
standard = "Vishay TLHR44"

[[presets]]
id = "3mm-yellow"
title = "Vishay TLHY4400, 3 mm (T-1) round LED, yellow, tinted diffused"
params = { package = "3mm", color = "yellow" }
aliases = ["Vishay TLHY4400", "TLHY4400", "3 mm (T-1) yellow LED", "3mm yellow LED", "3 mm (T-1) LED", "LED_D3.0mm_Yellow"]
standard = "Vishay TLHY44"

[[presets]]
id = "3mm-green"
title = "Vishay TLHG4400, 3 mm (T-1) round LED, green, tinted diffused"
params = { package = "3mm", color = "green" }
aliases = ["Vishay TLHG4400", "TLHG4400", "3 mm (T-1) green LED", "3mm green LED", "3 mm (T-1) LED", "LED_D3.0mm_Green"]
standard = "Vishay TLHG44"

README.md 39 lines · Markdown

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Through-hole LED

A round through-hole LED with two straight leads: the moulded body (flange, cylinder and spherical dome) standing on the board at the leads' standoff kinks. The body's axis is the Z axis and the board's top face the XY plane. The cathode lead is at -X and the anode at +X, 2.54 nom. apart. The 5 mm flange has its flat on the cathode side.

package is Vishay's 5 mm (T-1 3/4) or 3 mm (T-1) package, color the tinted diffused lens's colour, and tail how far the leads run below the board.

Package	Parts	Body Ø	Flange Ø	Flange	Top above the flange's underside	Dome	Kink below the flange	Leads
5mm	TLHR5400, TLHY5400, TLHG5400	5 ±0.15	5.8 ±0.15	1.0 (8.7 - 7.7)	8.7 ±0.3	R 2.49 sphere	3.8 (12.5 - 8.7)	0.5 square, 2.54 nom.
3mm	TLHR4400, TLHY4400, TLHG4400	2.9 ±0.15	3.2 ±0.15	1.0 (4.4 - 3.4)	4.4 ±0.3	R 1.4 sphere	1.4 (5.8 - 4.4)	0.5 x 0.4, 2.54 nom.

The values in brackets follow from the drawings' dimensions, which run from the top: to the flange's underside, to its top face and to the leads' kink.

Source

Vishay's data sheets, from Vishay's own site:

"TLHR540., TLHY540., TLHG540.", High Efficiency LED, Ø 5 mm Tinted Diffused Package, Rev. 2.6, 09-Sep-2022, document 83012, https://www.vishay.com/docs/83012/tlhg540.pdf. Page 7, "Package dimensions in millimeters": Ø 5 ±0.15, Ø 5.8 ±0.15, 8.7 ±0.3, 7.7 ±0.15, R 2.49 (sphere), 12.5 ±0.3 to the kink, leads 0.5 +0.15/-0.05, 2.54 nom., 35.5 ±0.55 overall; anode A and cathode C in the top view, the flange's flat at C.
"TLHR440., TLHO440., TLHY440., TLHG440.", High Efficiency LED, Ø 3 mm Tinted Diffused Package, Rev. 3.8, 21-Mar-2023, document 83006, https://www.vishay.com/doc?83006. Page 9, "Package dimensions in millimeters": Ø 2.9 ±0.15, Ø 3.2 ±0.15, 4.4 ±0.3, 3.4 ±0.15, R 1.4 (sphere), 5.8 ±0.3 to the kink, leads 0.5 +0.2/-0.1 x 0.4 +0.15/-0.05, 2.54 nom.

Proportions, for looks only. The 5 mm top view draws the flange's flat but doesn't dimension it: here the flat is 0.88 x the flange's radius from its centre. The leads are straight from the tail up to the flange's underside; the kink, the seating point, isn't drawn as a shape, and the resin that runs below the flange (< 0.7, < 0.6) isn't modelled.

Materials are for looks and a rough mass. The body is tinted epoxy resin (density about 1.2), shown as pmma (1.18), the nearest clear plastic in the material list, in the lens colour. The sheets don't name the lead material, and the leads are shown as copper. The sheets give no weight, so there is no mass check.

Catalogue models

The old catalogue's LED names are generic: a diameter and no maker. As for generic pin headers, a model maps to a maker's package when its body, the flange and the cylinder, is within 0.15 mm of the maker's drawing. Where the old model is plainly wrong for its size, it maps to the real part. Measured on the reference models (2026-11-06), against Vishay's drawings:

Models		Body Ø	Flange Ø	Flange's underside to top	Flange	Leads	Flange above the board
`LED_D5.0mm`, `_Green`, `_Yellow` (one model)	old	4.9	5.8, flat on the cathode side	8.6	1.0	0.4 square	3.0
	Vishay 5 mm	5 ±0.15	5.8 ±0.15	8.7 ±0.3	1.0	0.5 square	3.8 (at the kink)
`LED_D3.0mm`, `_Green`, `_Yellow` (one model)	old	3.0	3.8, flat on the cathode side	5.3	1.0	0.4 square	3.0
	Vishay 3 mm	2.9 ±0.15	3.2 ±0.15	4.4 ±0.3	1.0	0.5 x 0.4	1.4 (at the kink)

The 5 mm models map to TLHR5400, TLHG5400 and TLHY5400: the body is within 0.15. The leads differ, as post sizes differ between makers of the same part, and so does the seating height.
The 3 mm models map to TLHR4400, TLHG4400 and TLHY4400 although their flange and height differ by more: Vishay's 3 mm (Ø 3.2, 4.4) and Kingbright's WP710A10 (Spec No. DSAL0505, V.12A, 08/11/2023, kingbrightusa.com: Ø 3.2, 4.6) agree, so the old model, at Ø 3.8 and 5.3, is plainly wrong for a 3 mm LED rather than a different part.
Not mapped, as no table read yet: horizontal models (leads bent at a height the drawings don't give), the blue, clear and flat-top models (Vishay's sheets have red, yellow and green tinted lenses only), the infrared emitters (another part), and the other sizes and shapes.

# Through-hole LED

`package` is Vishay's 5 mm (T-1 3/4) or 3 mm (T-1) package, `color` the tinted diffused lens's colour, and `tail` how far the leads run below the board.

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

| 5mm | TLHR5400, TLHY5400, TLHG5400 | 5 ±0.15 | 5.8 ±0.15 | 1.0 (8.7 - 7.7) | 8.7 ±0.3 | R 2.49 sphere | 3.8 (12.5 - 8.7) | 0.5 square, 2.54 nom. |

| 3mm | TLHR4400, TLHY4400, TLHG4400 | 2.9 ±0.15 | 3.2 ±0.15 | 1.0 (4.4 - 3.4) | 4.4 ±0.3 | R 1.4 sphere | 1.4 (5.8 - 4.4) | 0.5 x 0.4, 2.54 nom. |

The values in brackets follow from the drawings' dimensions, which run from the top: to the flange's underside, to its top face and to the leads' kink.

## Source

Vishay's data sheets, from Vishay's own site:

- "TLHR540., TLHY540., TLHG540.", High Efficiency LED, Ø 5 mm Tinted Diffused Package, Rev. 2.6, 09-Sep-2022, document 83012, <https://www.vishay.com/docs/83012/tlhg540.pdf>. Page 7, "Package dimensions in millimeters": Ø 5 ±0.15, Ø 5.8 ±0.15, 8.7 ±0.3, 7.7 ±0.15, R 2.49 (sphere), 12.5 ±0.3 to the kink, leads 0.5 +0.15/-0.05, 2.54 nom., 35.5 ±0.55 overall; anode A and cathode C in the top view, the flange's flat at C.

- "TLHR440., TLHO440., TLHY440., TLHG440.", High Efficiency LED, Ø 3 mm Tinted Diffused Package, Rev. 3.8, 21-Mar-2023, document 83006, <https://www.vishay.com/doc?83006>. Page 9, "Package dimensions in millimeters": Ø 2.9 ±0.15, Ø 3.2 ±0.15, 4.4 ±0.3, 3.4 ±0.15, R 1.4 (sphere), 5.8 ±0.3 to the kink, leads 0.5 +0.2/-0.1 x 0.4 +0.15/-0.05, 2.54 nom.

**Proportions, for looks only.** The 5 mm top view draws the flange's flat but doesn't dimension it: here the flat is 0.88 x the flange's radius from its centre. The leads are straight from the tail up to the flange's underside; the kink, the seating point, isn't drawn as a shape, and the resin that runs below the flange (< 0.7, < 0.6) isn't modelled.

## Catalogue models

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

| `LED_D5.0mm`, `_Green`, `_Yellow` (one model) | old | 4.9 | 5.8, flat on the cathode side | 8.6 | 1.0 | 0.4 square | 3.0 |

| | Vishay 5 mm | 5 ±0.15 | 5.8 ±0.15 | 8.7 ±0.3 | 1.0 | 0.5 square | 3.8 (at the kink) |

| `LED_D3.0mm`, `_Green`, `_Yellow` (one model) | old | 3.0 | 3.8, flat on the cathode side | 5.3 | 1.0 | 0.4 square | 3.0 |

| | Vishay 3 mm | 2.9 ±0.15 | 3.2 ±0.15 | 4.4 ±0.3 | 1.0 | 0.5 x 0.4 | 1.4 (at the kink) |

- The 5 mm models map to TLHR5400, TLHG5400 and TLHY5400: the body is within 0.15. The leads differ, as post sizes differ between makers of the same part, and so does the seating height.

- The 3 mm models map to TLHR4400, TLHG4400 and TLHY4400 although their flange and height differ by more: Vishay's 3 mm (Ø 3.2, 4.4) and Kingbright's WP710A10 (Spec No. DSAL0505, V.12A, 08/11/2023, kingbrightusa.com: Ø 3.2, 4.6) agree, so the old model, at Ø 3.8 and 5.3, is plainly wrong for a 3 mm LED rather than a different part.

- Not mapped, as no table read yet: horizontal models (leads bent at a height the drawings don't give), the blue, clear and flat-top models (Vishay's sheets have red, yellow and green tinted lenses only), the infrared emitters (another part), and the other sizes and shapes.

# Through-hole LED

A round through-hole LED with two straight leads: the moulded body (flange, cylinder and spherical dome) standing on the board at the leads' standoff kinks. The body's axis is the Z axis and the board's top face the XY plane. The cathode lead is at -X and the anode at +X, 2.54 nom. apart. The 5 mm flange has its flat on the cathode side.

`package` is Vishay's 5 mm (T-1 3/4) or 3 mm (T-1) package, `color` the tinted diffused lens's colour, and `tail` how far the leads run below the board.

| Package | Parts | Body Ø | Flange Ø | Flange | Top above the flange's underside | Dome | Kink below the flange | Leads |
|---|---|---|---|---|---|---|---|---|
| 5mm | TLHR5400, TLHY5400, TLHG5400 | 5 ±0.15 | 5.8 ±0.15 | 1.0 (8.7 - 7.7) | 8.7 ±0.3 | R 2.49 sphere | 3.8 (12.5 - 8.7) | 0.5 square, 2.54 nom. |
| 3mm | TLHR4400, TLHY4400, TLHG4400 | 2.9 ±0.15 | 3.2 ±0.15 | 1.0 (4.4 - 3.4) | 4.4 ±0.3 | R 1.4 sphere | 1.4 (5.8 - 4.4) | 0.5 x 0.4, 2.54 nom. |

The values in brackets follow from the drawings' dimensions, which run from the top: to the flange's underside, to its top face and to the leads' kink.

## Source

Vishay's data sheets, from Vishay's own site:

- "TLHR540., TLHY540., TLHG540.", High Efficiency LED, Ø 5 mm Tinted Diffused Package, Rev. 2.6, 09-Sep-2022, document 83012, <https://www.vishay.com/docs/83012/tlhg540.pdf>. Page 7, "Package dimensions in millimeters": Ø 5 ±0.15, Ø 5.8 ±0.15, 8.7 ±0.3, 7.7 ±0.15, R 2.49 (sphere), 12.5 ±0.3 to the kink, leads 0.5 +0.15/-0.05, 2.54 nom., 35.5 ±0.55 overall; anode A and cathode C in the top view, the flange's flat at C.
- "TLHR440., TLHO440., TLHY440., TLHG440.", High Efficiency LED, Ø 3 mm Tinted Diffused Package, Rev. 3.8, 21-Mar-2023, document 83006, <https://www.vishay.com/doc?83006>. Page 9, "Package dimensions in millimeters": Ø 2.9 ±0.15, Ø 3.2 ±0.15, 4.4 ±0.3, 3.4 ±0.15, R 1.4 (sphere), 5.8 ±0.3 to the kink, leads 0.5 +0.2/-0.1 x 0.4 +0.15/-0.05, 2.54 nom.

**Proportions, for looks only.** The 5 mm top view draws the flange's flat but doesn't dimension it: here the flat is 0.88 x the flange's radius from its centre. The leads are straight from the tail up to the flange's underside; the kink, the seating point, isn't drawn as a shape, and the resin that runs below the flange (< 0.7, < 0.6) isn't modelled.

Materials are for looks and a rough mass. The body is tinted epoxy resin (density about 1.2), shown as pmma (1.18), the nearest clear plastic in the material list, in the lens colour. The sheets don't name the lead material, and the leads are shown as copper. The sheets give no weight, so there is no mass check.

## Catalogue models

The old catalogue's LED names are generic: a diameter and no maker. As for generic pin headers, a model maps to a maker's package when its body, the flange and the cylinder, is within 0.15 mm of the maker's drawing. Where the old model is plainly wrong for its size, it maps to the real part. Measured on the reference models (2026-11-06), against Vishay's drawings:

| Models | | Body Ø | Flange Ø | Flange's underside to top | Flange | Leads | Flange above the board |
|---|---|---|---|---|---|---|---|
| `LED_D5.0mm`, `_Green`, `_Yellow` (one model) | old | 4.9 | 5.8, flat on the cathode side | 8.6 | 1.0 | 0.4 square | 3.0 |
| | Vishay 5 mm | 5 ±0.15 | 5.8 ±0.15 | 8.7 ±0.3 | 1.0 | 0.5 square | 3.8 (at the kink) |
| `LED_D3.0mm`, `_Green`, `_Yellow` (one model) | old | 3.0 | 3.8, flat on the cathode side | 5.3 | 1.0 | 0.4 square | 3.0 |
| | Vishay 3 mm | 2.9 ±0.15 | 3.2 ±0.15 | 4.4 ±0.3 | 1.0 | 0.5 x 0.4 | 1.4 (at the kink) |

- The 5 mm models map to TLHR5400, TLHG5400 and TLHY5400: the body is within 0.15. The leads differ, as post sizes differ between makers of the same part, and so does the seating height.
- The 3 mm models map to TLHR4400, TLHG4400 and TLHY4400 although their flange and height differ by more: Vishay's 3 mm (Ø 3.2, 4.4) and Kingbright's WP710A10 (Spec No. DSAL0505, V.12A, 08/11/2023, kingbrightusa.com: Ø 3.2, 4.6) agree, so the old model, at Ø 3.8 and 5.3, is plainly wrong for a 3 mm LED rather than a different part.
- Not mapped, as no table read yet: horizontal models (leads bent at a height the drawings don't give), the blue, clear and flat-top models (Vishay's sheets have red, yellow and green tinted lenses only), the infrared emitters (another part), and the other sizes and shapes.

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/tht-led/v/1.0.1/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/tht-led/1.0.1"

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

About this part

steve120 parts

Profile

PMMA (acrylic)Plastics · Custom finish · 1.17 g/cm³
Copper (pure)Copper alloys · Custom finish · 8.96 g/cm³

Mass: 0.22 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: 3e077d6bf897…

#led #through-hole #t-1 #t-1-3-4 #vishay #electronics

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Through-hole round LED with two straight leads, standing on the board at its lead standoffs, from Vishay's package drawings: the 5 mm (T-1 3/4) TLHR5400, TLHY5400 and TLHG5400, with the flange's flat on the cathode side, and the 3 mm (T-1) TLHR4400, TLHY4400 and TLHG4400. Tinted diffused lens in red, yellow or green. Cathode lead at -X, the body's axis on Z. See the README.

Through-hole LED

package is Vishay's 5 mm (T-1 3/4) or 3 mm (T-1) package, color the tinted diffused lens's colour, and tail how far the leads run below the board.

Package	Parts	Body Ø	Flange Ø	Flange	Top above the flange's underside	Dome	Kink below the flange	Leads
5mm	TLHR5400, TLHY5400, TLHG5400	5 ±0.15	5.8 ±0.15	1.0 (8.7 - 7.7)	8.7 ±0.3	R 2.49 sphere	3.8 (12.5 - 8.7)	0.5 square, 2.54 nom.
3mm	TLHR4400, TLHY4400, TLHG4400	2.9 ±0.15	3.2 ±0.15	1.0 (4.4 - 3.4)	4.4 ±0.3	R 1.4 sphere	1.4 (5.8 - 4.4)	0.5 x 0.4, 2.54 nom.

The values in brackets follow from the drawings' dimensions, which run from the top: to the flange's underside, to its top face and to the leads' kink.

Source

Vishay's data sheets, from Vishay's own site:

"TLHR540., TLHY540., TLHG540.", High Efficiency LED, Ø 5 mm Tinted Diffused Package, Rev. 2.6, 09-Sep-2022, document 83012, https://www.vishay.com/docs/83012/tlhg540.pdf. Page 7, "Package dimensions in millimeters": Ø 5 ±0.15, Ø 5.8 ±0.15, 8.7 ±0.3, 7.7 ±0.15, R 2.49 (sphere), 12.5 ±0.3 to the kink, leads 0.5 +0.15/-0.05, 2.54 nom., 35.5 ±0.55 overall; anode A and cathode C in the top view, the flange's flat at C.
"TLHR440., TLHO440., TLHY440., TLHG440.", High Efficiency LED, Ø 3 mm Tinted Diffused Package, Rev. 3.8, 21-Mar-2023, document 83006, https://www.vishay.com/doc?83006. Page 9, "Package dimensions in millimeters": Ø 2.9 ±0.15, Ø 3.2 ±0.15, 4.4 ±0.3, 3.4 ±0.15, R 1.4 (sphere), 5.8 ±0.3 to the kink, leads 0.5 +0.2/-0.1 x 0.4 +0.15/-0.05, 2.54 nom.

Catalogue models

Models		Body Ø	Flange Ø	Flange's underside to top	Flange	Leads	Flange above the board
`LED_D5.0mm`, `_Green`, `_Yellow` (one model)	old	4.9	5.8, flat on the cathode side	8.6	1.0	0.4 square	3.0
	Vishay 5 mm	5 ±0.15	5.8 ±0.15	8.7 ±0.3	1.0	0.5 square	3.8 (at the kink)
`LED_D3.0mm`, `_Green`, `_Yellow` (one model)	old	3.0	3.8, flat on the cathode side	5.3	1.0	0.4 square	3.0
	Vishay 3 mm	2.9 ±0.15	3.2 ±0.15	4.4 ±0.3	1.0	0.5 x 0.4	1.4 (at the kink)

The 5 mm models map to TLHR5400, TLHG5400 and TLHY5400: the body is within 0.15. The leads differ, as post sizes differ between makers of the same part, and so does the seating height.
The 3 mm models map to TLHR4400, TLHG4400 and TLHY4400 although their flange and height differ by more: Vishay's 3 mm (Ø 3.2, 4.4) and Kingbright's WP710A10 (Spec No. DSAL0505, V.12A, 08/11/2023, kingbrightusa.com: Ø 3.2, 4.6) agree, so the old model, at Ø 3.8 and 5.3, is plainly wrong for a 3 mm LED rather than a different part.
Not mapped, as no table read yet: horizontal models (leads bent at a height the drawings don't give), the blue, clear and flat-top models (Vishay's sheets have red, yellow and green tinted lenses only), the infrared emitters (another part), and the other sizes and shapes.

1.0.1 Latest Nov 6, 2026 · 38 minutes ago Compare with 1.0.0
1.0.0 Nov 6, 2026 · 41 minutes ago

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