# MPS2907A

**Changjing** · Bipolar (BJT) · TO-92

MPS2907A from Changjing, in a TO-92. 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 | EMITTER | passive | Emitter terminal of the PNP transistor; the emitter-base breakdown voltage V(BR)EBO is -5 V minimum and the emitter-base cut-off current IEBO is -10 nA maximum at VEB=-3V. |
| 2 | BASE | passive | Base terminal of the PNP transistor; the base-emitter saturation voltage VBE(sat) is -1 V maximum at IC=-150mA, IB=-15mA. |
| 3 | COLLECTOR | passive | Collector terminal of the PNP transistor; the datasheet rates the collector-emitter voltage VCEO at -60 V and the continuous collector current IC at -0.6 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | TO-92 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Collector-base breakdown voltage | V(BR)CBO | -60 |  |  | V | IC=-10μA,IE=0 | 1 |
| Collector-emitter breakdown voltage | V(BR)CEO | -60 |  |  | V | IC=-10mA,IB=0 | 1 |
| Emitter-base breakdown voltage | V(BR)EBO | -5 |  |  | V | IE=-10μA,IC=0 | 1 |
| Collector cut-off current | ICBO |  |  | -10 | nA | VCB=-50V,IE=0 | 1 |
| Collector cut-off current | ICEX |  |  | -50 | nA | VCE=-30V,VEB(off)=-0.5V | 1 |
| Emitter cut-off current | IEBO |  |  | -10 | nA | VEB=-3V,IC=0 | 1 |
| DC current gain | hFE(1) | 78 |  |  |  | VCE=-10V,IC=-0.1mA | 1 |
| DC current gain | hFE(2) | 100 |  | 300 |  | VCE=-10V,IC=-150mA | 1 |
| DC current gain | hFE(3) | 52 |  |  |  | VCE=-10V,IC=-500mA | 1 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | -0.4 | V | IC=-150mA,IB=-15mA | 1 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | -0.67 | V | IC=-500mA,IB=-50mA | 1 |
| Base-emitter saturation voltage | VBE(sat) |  |  | -1 | V | IC=-150mA,IB=-15mA | 1 |
| Base-emitter saturation voltage | VBE(sat) |  |  | -1.2 | V | IC=-500mA,IB=-50mA | 1 |
| Transition frequency | fT | 200 |  |  | MHz | VCE=-20V,IC=-50mA,f=100MHz | 1 |
| Delay time | td |  |  | 10 | ns |  | 1 |
| Rise time | tr |  |  | 25 | ns | IB1=-IB2=-15mA, VCC=-30V, Ic=-150mA | 1 |
| Storage time | tS |  |  | 225 | ns |  | 1 |
| Fall time | tf |  |  | 60 | ns | VCC=-6V, Ic=-150mA, IB1=-IB2=-15mA | 1 |
| Collector-emitter voltage | VCEO |  |  | -60 | V | Ta=25℃ | 1 |
| Collector-base voltage | VCBO |  |  | -60 | V | Ta=25℃ | 1 |
| Emitter-base voltage | VEBO |  |  | -5 | V | Ta=25℃ | 1 |
| Collector current, continuous | IC |  |  | -0.6 | A | Ta=25℃ | 1 |
| Collector power dissipation | PC |  |  | 0.625 | W | Ta=25℃ | 1 |
| Junction temperature | TJ |  |  | 150 | ℃ |  | 1 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `MPS2907A`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files: `mps2907a-etched.step` / `mps2907a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mps2907a.step` / `mps2907a.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/8588907149799919617) (4 pp, sha256 `8a4710cca648047f`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/mps2907a-datasheet.pdf)