# B540C

**FUXINSEMI** · Schottky Barrier Diodes (SBD) · SMC(DO-214AB)

B540C from FUXINSEMI, in a SMC(DO-214AB). 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 of the B540C Schottky rectifier, marked by the color band on the package; the datasheet's B540C column rates it at 40 V VRRM and 5.0 A average forward current (I(AV)). |
| 2 | anode | passive | Anode of the B540C Schottky rectifier; the datasheet's B540C column gives a maximum instantaneous forward voltage of 0.55 V at 5.0 A and a maximum DC reverse current of 0.1 mA at 25°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | FUXINSEMI |
| Package | SMC(DO-214AB) |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `B540C`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
- 3D model files: `b540c-etched.step` / `b540c-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `b540c.step` / `b540c.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [FUXINSEMI datasheet](docs/b540c-datasheet.pdf) (4 pp, sha256 `3fa247bf6dc44442`, retrieved 2026-10-21, 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/b540c-datasheet.pdf)