# SF56

**HUXN** · Fast Recovery / High Efficiency Diodes · DO-27

SF56 from HUXN, in a DO-27. 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 lead, the end marked by the polarity band on the body; SF56 is rated 400 V maximum repetitive peak reverse voltage (VRRM) and 5.0 A average forward current. |
| 2 | A | passive | Anode lead, the unbanded end of the body; forward voltage for SF56 is 1.25 V maximum at 5.0 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HUXN |
| Package | DO-27 |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `SF56`
- Footprint: `Diode_THT:D_DO-27_P15.24mm_Horizontal`
- 3D model: DO-27 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [HUXN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590234366774579200) (2 pp, sha256 `8e2dcdf3d2002647`, 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/sf56-datasheet.pdf)