# US1JA

**FUXINSEMI** · Fast Recovery / High Efficiency Diodes · SMA(DO-214AC)

US1JA from FUXINSEMI, in a SMA(DO-214AC). 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 | CATHODE | passive | Cathode pin, identified by the color band at the cathode end of the SMA/DO-214AC body; for US1JA the datasheet rates VRRM at 600 V and average forward rectified current at 1.0 A with TL = 100 °C. |
| 2 | ANODE | passive | Anode pin, opposite the cathode band; the device is a 1.0 A surface-mount high-efficiency rectifier with 30.0 A peak forward surge current (8.3 ms, JEDEC method) per the ratings table. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | FUXINSEMI |
| Package | SMA(DO-214AC) |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `US1JA`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files: `us1ja-etched.step` / `us1ja-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `us1ja.step` / `us1ja.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [FUXINSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590893947013181440) (4 pp, sha256 `d7c8ec6a0a0abcd1`, retrieved 2026-10-13, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/us1ja-datasheet.pdf)