# BSD5A051V-TP

**TECH PUBLIC** · Electrostatic And Surge Protection (TVS/ESD) · SOD-523

BSD5A051V-TP from TECH PUBLIC, 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 | K | passive | Cathode of the 1-line uni-directional TVS diode, connected to the protected power or I/O line (reverse working voltage 5 V max, breakdown 6 V min at 1 mA). |
| 2 | A | passive | Anode of the uni-directional TVS diode, normally connected to ground, with ESD protection of ±30 kV (air and contact) per IEC 61000-4-2. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOD-523 |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `BSD5A051V-TP`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `bsd5a051v-tp-etched.step` / `bsd5a051v-tp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bsd5a051v-tp.step` / `bsd5a051v-tp.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](docs/bsd5a051v-tp-datasheet.pdf) (4 pp, sha256 `1dfc87b3a48070bc`, 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/bsd5a051v-tp-datasheet.pdf)