# SM5401

**LGE** · Diodes - General Purpose · DO-213AB

SM5401 from LGE, in a DO-213AB. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode, the end marked by the color band; the SM5401 is rated 100 V VRRM, 70 V VRMS and 100 V DC blocking, with 3.0 A average forward current. |
| 2 | A | passive | Anode, the end without the color band; the forward voltage is 1.2 V at 3.0 A and the peak surge current is 100 A (10 ms half-sine). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | DO-213AB |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `SM5401`
- Footprint: `Diode_SMD:D_MELF`
- 3D model: DO-213AB (KiCad packages3D, STEP)

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [LGE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603051420551958528) (2 pp, sha256 `6d766d135e1dc39f`, retrieved 2026-10-13, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/sm5401-datasheet.pdf)