# SM5404

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

SM5404 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, marked by the color band on the MELF body; the SM5404 blocks up to 400 V DC (VRRM 400 V, VRMS 280 V). |
| 2 | A | passive | Anode, the solderable end opposite the color band; carries up to 3.0 A average forward current (IF(AV) at TA=50) with VF of 1.2 V at 3.0 A. |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Maximum recurrent peak reverse voltage | VRRM |  |  | 400 | V | SM5404 column | 1 |
| Maximum RMS voltage | VRMS |  |  | 280 | V | SM5404 column | 1 |
| Maximum DC blocking voltage | VDC |  |  | 400 | V | SM5404 column | 1 |
| Maximum average forward rectified current | IF(AV) |  |  | 3 | A | @TA=50 | 1 |
| Peak forward surge current | IFSM |  |  | 100 | A | 10ms single half-sine-wave superimposed on rated load @TA=25 | 1 |
| Maximum instantaneous forward voltage | VF |  |  | 1.2 | V | @ 3.0 A | 1 |
| Operating junction temperature range | TJ | -50 |  | 175 | °C |  | 1 |
| Storage temperature range | TSTG | -50 |  | 175 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `SM5404`
- 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](docs/sm5404-datasheet.pdf) (2 pp, sha256 `a10e1216e98c3c68`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-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/sm5404-datasheet.pdf)