# BAV99BRW

**YONGYUTAI** · Switching Diodes · SOT-363

BAV99BRW from YONGYUTAI, in a SOT-363. 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 | A1 | passive | Anode of the first diode, which is in series with the diode to pin 5 through common pin 6; reverse voltage 75 V max. |
| 2 | A2 | passive | Anode of the second diode, which is in series with the diode to pin 4 through common pin 3; reverse voltage 75 V max. |
| 3 | COM2 | passive | Common junction of the second series pair, joining the cathode of the pin 2 diode to the anode of the pin 4 diode; forward continuous current 300 mA max. |
| 4 | K2 | passive | Cathode of the second series diode pair, connected to common pin 3; reverse voltage 75 V max. |
| 5 | K1 | passive | Cathode of the first series diode pair, connected to common pin 6; reverse voltage 75 V max. |
| 6 | COM1 | passive | Common junction of the first series pair, joining the cathode of the pin 1 diode to the anode of the pin 5 diode; forward continuous current 300 mA max. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YONGYUTAI |
| Package | SOT-363 |
| Category | Diodes |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `BAV99BRW`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `bav99brw-etched.step` / `bav99brw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bav99brw.step` / `bav99brw.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YONGYUTAI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590197780594790400) (3 pp, sha256 `33c00d09a17b5011`, retrieved 2026-10-09, 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/bav99brw-datasheet.pdf)