BAV99T

Changjing · Switching Diodes · SOT-523

BAV99T from Changjing, in a SOT-523. 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, whose cathode is tied to common pin 3; the part is rated VR 85 V and IF 75 mA.
2	K2	passive	Cathode of the second diode, whose anode is tied to common pin 3; the part is rated VR 85 V and IF 75 mA.
3	K1/A2	passive	Common node joining the cathode of the first diode and the anode of the second diode in a series pair; the part is rated VR 85 V and IF 75 mA.

Key specifications

Parameter	Value
Manufacturer	Changjing
Package	SOT-523
Category	Diodes
Pins	3

CAD (KiCad official)

Symbol: BAV99T
Footprint: Package_TO_SOT_SMD:SOT-523
3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
3D model files: bav99t-etched.step / bav99t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bav99t.step / bav99t.glb are the bare package body.

Provenance

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

Datasheet: Changjing datasheet (4 pp, sha256 7325be262eeab088, 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

# BAV99T

**Changjing** · Switching Diodes · SOT-523

BAV99T from Changjing, in a SOT-523. 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, whose cathode is tied to common pin 3; the part is rated VR 85 V and IF 75 mA. |
| 2 | K2 | passive | Cathode of the second diode, whose anode is tied to common pin 3; the part is rated VR 85 V and IF 75 mA. |
| 3 | K1/A2 | passive | Common node joining the cathode of the first diode and the anode of the second diode in a series pair; the part is rated VR 85 V and IF 75 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-523 |
| Category | Diodes |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `BAV99T`
- Footprint: `Package_TO_SOT_SMD:SOT-523`
- 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `bav99t-etched.step` / `bav99t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bav99t.step` / `bav99t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586202689089261568) (4 pp, sha256 `7325be262eeab088`, 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/bav99t-datasheet.pdf)