# FZT954

**Changjing** · Bipolar Transistors - BJT · SOT-223

FZT954 from Changjing, in a SOT-223. 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 | BASE | input | Base terminal of the PNP transistor, driven with base currents from -10mA to -400mA in the datasheet test conditions. |
| 2 | COLLECTOR | passive | Collector terminal, rated for -5A continuous collector current and -10A pulsed (ICM), with VCEO of -100V. |
| 3 | EMITTER | passive | Emitter terminal, with emitter-base breakdown voltage V(BR)EBO of -7V minimum at IE=-0.1mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-223 |
| Category | Triode/MOS Tube/Transistor |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `FZT954`
- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`
- 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files: `fzt954-etched.step` / `fzt954-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fzt954.step` / `fzt954.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](docs/fzt954-datasheet.pdf) (4 pp, sha256 `345a38e257123ea6`, retrieved 2026-10-28, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `off` (skipped (clean text read)), 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/fzt954-datasheet.pdf)