# BSD5C051L

**BORN** · ESD And Surge Protection (TVS/ESD) · SOD-523

BSD5C051L from BORN, in a SOD-523. 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 | Pin1 | passive | Terminal 1 of the bidirectional TVS clamp on the protected I/O line, rated for 5.0 V reverse stand-off (VRWM) and 3 A peak pulse current (8/20 µs) for the device. |
| 2 | Pin2 | passive | Terminal 2 of the bidirectional TVS clamp on the protected I/O line, rated for 5.0 V reverse stand-off (VRWM) and 3 A peak pulse current (8/20 µs) for the device. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BORN |
| Package | SOD-523 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `BSD5C051L`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `bsd5c051l-etched.step` / `bsd5c051l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bsd5c051l.step` / `bsd5c051l.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BORN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586188466409918464) (5 pp, sha256 `542b416bb0d48f3e`, retrieved 2026-10-12, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/bsd5c051l-datasheet.pdf)