# FMMT625TA

**Diodes Incorporated** · Bipolar (BJT) · SOT-23

FMMT625TA from Diodes Incorporated, in a SOT-23. 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; the datasheet rates base current IB at 500 mA and emitter-base voltage VEBO at 5 V. |
| 2 | E | passive | Emitter of the NPN transistor; the datasheet rates collector-emitter voltage VCEO at 150 V and continuous collector current IC at 1 A. |
| 3 | C | passive | Collector of the NPN transistor, the single lead on one side of the package; the datasheet rates VCBO at 150 V, VCEO at 150 V, continuous IC at 1 A and peak ICM at 3 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `FMMT625TA`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `fmmt625ta-etched.step` / `fmmt625ta-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fmmt625ta.step` / `fmmt625ta.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884489586290688) (7 pp, sha256 `4f78b15f76c29017`, 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/fmmt625ta-datasheet.pdf)