# BAV199

**Nexperia** · Diodes - General Purpose · SOT-23

BAV199 from Nexperia, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | A1 | passive | Anode of diode 1 (D1). Forms the input end of the series-connected double-diode string. |
| 2 | K2 | passive | Cathode of diode 2 (D2). Forms the output end of the series-connected double-diode string. |
| 3 | K1/A2 | passive | Common node: cathode of diode 1 (K1) tied internally to anode of diode 2 (A2). This is the mid-point of the series double-diode connection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `BAV199`

## CAD (KiCad official)

- Symbol: `BAV199`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bav199-etched.step` / `bav199-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bav199.step` / `bav199.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/BAV199.pdf) (9 pp, sha256 `ab2f26d003e3c1d8`, retrieved 2026-08-17, tier: manufacturer)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/bav199-datasheet.pdf)