# 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: . - 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`.