# BSD9C051V

**BORN** · ESD And Surge Protection (TVS/ESD) · SOD-923

BSD9C051V from BORN, in a SOD-923. 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 banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BORN |
| Package | SOD-923 |
| Category | Circuit Protection |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power | PPP |  |  | 100 | W | tp=8/20μs | 2 |
| Peak Forward Voltage | VFP |  |  | 1.5 | V | IF=1A, tp=8/20μs | 2 |
| Operating Temperature | TJ | -55 |  | 125 | ℃ |  | 2 |
| Storage Temperature | TSTG | -55 |  | 150 | ℃ |  | 2 |
| Reverse Stand-Off Voltage | VRWM |  |  | 5 | V |  | 2 |
| Reverse Breakdown Voltage | VBR | 6 |  |  | V | IT=1mA | 2 |
| Reverse Leakage Current | IR |  |  | 1 | μA | VRWM=5V, T=25℃ | 2 |
| Peak Pulse Current | IPP |  |  | 5 | A | tp=8/20μs | 2 |
| Clamping Voltage | VC |  |  | 9.5 | V | IPP=1A, tp=8/20μs | 2 |
| Clamping Voltage | VC |  | 13.5 | 15 | V | IPP=5.0A, tp=8/20μs | 2 |
| Junction Capacitance | Cj |  | 15 |  | pF | VR = 0V, f = 1MHz | 2 |

## CAD (KiCad official)

- Symbol: `BSD9C051V`
- Footprint: `Diode_SMD:D_SOD-923`
- 3D model: SOD-923 (KiCad packages3D, STEP)
- 3D model files: `bsd9c051v-etched.step` / `bsd9c051v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bsd9c051v.step` / `bsd9c051v.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/8588881722901061632) (4 pp, sha256 `3d017a6e9e72648a`, retrieved 2026-10-14, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/bsd9c051v-datasheet.pdf)