# SRA4E

**YFW** · Diodes - Fast Recovery Rectifiers · DO-27

SRA4E from YFW, 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, the lead at the banded (Cathode Mark) end of the DO-201AD/DO-27 body; rated 400 V VRRM/VDC, 10.0 A average forward current. |
| 2 | A | passive | Anode, the lead at the end opposite the cathode band; forward voltage 1.10 V max at 10 A. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SRA4E`
- 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:** [YFW datasheet](docs/sra4e-datasheet.pdf) (3 pp, sha256 `50372411cf4c6319`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/sra4e-datasheet.pdf)