# BAT54WFILM

**STMicroelectronics** · Schottky Diodes · SOT-323

BAT54WFILM from STMicroelectronics, in a SOT-323. 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 | A | passive | Anode of the single Schottky diode (40 V VRRM, 300 mA continuous forward current), drawn at the bottom-left pad in the top view. |
| 2 | NC | unconnected | Bottom-right pad in the top-view drawing; it has no connection to the single diode symbol. |
| 3 | K | passive | Cathode of the single Schottky diode (40 V VRRM, 300 mA continuous forward current), drawn at the top pad in the top view. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-323 |
| Category | Diodes |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `BAT54WFILM`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `bat54wfilm-etched.step` / `bat54wfilm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bat54wfilm.step` / `bat54wfilm.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603069485872541696) (15 pp, sha256 `47b6e3175bbe78ae`, retrieved 2026-10-07, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+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/bat54wfilm-datasheet.pdf)