# 2SC4672

**hongjiacheng** · Bipolar (BJT) · SOT-89

2SC4672 from hongjiacheng, in a SOT-89. 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 | B | input | Base of the NPN transistor (pin 1 in the function diagram); VEBO max 6.0 V, and VBE(sat) max 1.0 V at IC=1.0 A, IB=50 mA. |
| 2 | C | passive | Collector of the NPN transistor (pin 2 in the function diagram); VCBO 60 V, VCEO 50 V, IC max 2.0 A. |
| 3 | E | passive | Emitter of the NPN transistor (pin 3 in the function diagram, arrow pointing out); total power dissipation 500 mW. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| Package | SOT-89 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `2SC4672`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `2sc4672-etched.step` / `2sc4672-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sc4672.step` / `2sc4672.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [hongjiacheng datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8564879730891001856) (3 pp, sha256 `f70bdc409f6c96ef`, 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/2sc4672-datasheet.pdf)