# 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. Measured on the reference models (2026-11-06):

- `LED_D5.0mm`, `LED_D5.0mm_Green` and `LED_D5.0mm_Yellow` are the same model: body Ø 4.9, flange Ø 5.8 with a flat on the cathode side, 8.6 from the flange's underside to the top, 1.0 flange; leads 0.4 square, 2.54 apart. Against Vishay's 5 mm: 5 ±0.15, 5.8, 8.7 and 1.0, so they map to TLHR5400, TLHG5400 and TLHY5400. The leads differ (0.4 against 0.5), as post sizes differ between makers of the same part, and the old model's flange sits 3.0 above the board where Vishay's kink seats it 3.8 above.
- `LED_D3.0mm` and its colour variants: flange Ø 3.8 and the body about 5.3 high above the flange's underside. Vishay's 3 mm is Ø 3.2 and 4.4, and Kingbright's WP710A10 (Spec No. DSAL0505, V.12A, 08/11/2023, kingbrightusa.com) Ø 3.2 and 4.6, so they aren't mapped. The 3 mm package is offered all the same.
- 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 5 mm models (Vishay's sheet has red, yellow and green tinted lenses only), the infrared emitters (another part), and the other sizes and shapes.