# BZW04-5V8B

**STMicroelectronics** · ESD And Surge Protection (TVS/ESD) · DO-15

BZW04-5V8B from STMicroelectronics, in a DO-15. 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 | Terminal 1 of a bidirectional TVS/ESD diode; either orientation. |
| 2 | 2 | passive | Terminal 2 of a bidirectional TVS/ESD diode; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | DO-15 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse leakage current @VRM | IRM |  |  | 1000 | µA | @VRM | 2 |
| Breakdown voltage (min) | VBR | 5.8 |  |  | V | @IR = 10 mA; Note 2: pulse test tp < 50 ms | 2 |
| Breakdown voltage (max) | VBR |  |  | 6.45 | V | @IR = 10 mA; Note 2: pulse test tp < 50 ms | 2 |
| Clamping voltage, 10/1000 µs waveform | VCL |  |  | 10.5 | V | @IPP = 38.0 A, 10/1000 µs | 2 |
| Clamping voltage, 8/20 µs waveform | VCL |  |  | 13.4 | V | @IPP = 174 A, 8/20 µs | 2 |
| Voltage temperature coefficient | αT |  | 5.7 |  | 10-4/°C |  | 2 |
| Peak pulse power dissipation | PPP |  |  | 400 | W | 10/1000 µs; Tj initial = Tamb | 1 |
| Power dissipation on infinite heatsink | P |  |  | 1.7 | W | Tamb = 75°C | 1 |
| Storage temperature range | Tstg | -65 |  | 175 | °C |  | 1 |
| Maximum junction temperature | Tj |  |  | 175 | °C |  | 1 |
| Maximum lead temperature for soldering | TL |  |  | 230 | °C | 10 s, at 5 mm from case | 1 |
| Junction to leads thermal resistance | Rth (j-l) |  | 60 |  | °C/W |  | 1 |
| Junction to ambient thermal resistance | Rth (j-a) |  | 100 |  | °C/W | On printed circuit, Llead = 10 mm | 1 |

## CAD (KiCad official)

- Symbol: `BZW04-5V8B`
- Footprint: `Diode_THT:D_DO-15_P12.70mm_Horizontal`
- 3D model: DO-15 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589862445888921600) (6 pp, sha256 `dd05885843ed20fc`, retrieved 2026-10-16, 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/bzw04-5v8b-datasheet.pdf)