# BZW50-180B

**STMicroelectronics** · ESD And Surge Protection (TVS/ESD) · R-6

BZW50-180B from STMicroelectronics, in a R-6. 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 | 1 | passive | Bidirectional TVS terminal (BZW50-180B, VRM 180 V, VBR min 200 V at 1 mA), interchangeable with the other lead and with no polarity; red tape on both sides in tape packing. |
| 2 | 2 | passive | Bidirectional TVS terminal (BZW50-180B, VRM 180 V, VBR min 200 V at 1 mA), interchangeable with the other lead and with no polarity; red tape on both sides in tape packing. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | R-6 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `BZW50-180B`
- Footprint: `Diode_THT:D_P600_R-6_P20.00mm_Horizontal`
- 3D model: R-6 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/bzw50-180b.pdf) (12 pp, sha256 `e556076e948a7910`, retrieved 2026-10-10, tier: manufacturer)
- **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/bzw50-180b-datasheet.pdf)