# BCP53-10

**Changjing** · Bipolar (BJT) · SOT-223

BCP53-10 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 | PNP base terminal, with continuous base current limited to -100 mA and peak pulse base current to -200 mA. |
| 2 | COLLECTOR | passive | PNP collector terminal, rated for -1 A continuous and -2 A peak pulse collector current, with BCP53 collector-emitter voltage of -80 V (VCEO) and collector-base voltage of -100 V (VCBO). |
| 3 | EMITTER | passive | PNP emitter terminal, with emitter-base breakdown voltage of -5 V (VEBO). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-223 |
| 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 (BCP53) | V(BR)CBO | -100 |  |  | V | IC=-0.1mA, IE=0 | 1 |
| Collector-emitter breakdown voltage (BCP53) | V(BR)CEO | -80 |  |  | V | IC=-10mA, IB=0 | 1 |
| Base-emitter breakdown voltage | V(BR)EBO | -5 |  |  | V | IE=-10μA, IC=0 | 1 |
| Collector cut-off current | ICBO |  |  | -100 | nA | VCB=-30 V, IE=0 | 1 |
| DC current gain hFE(1) | hFE(1) | 25 |  |  |  | VCE=-2V, IC=-5mA | 1 |
| DC current gain hFE(2), rank -10 range | hFE(2) | 63 |  | 160 |  | VCE=-2V, IC=-150mA; BCP53-10 rank range 63-160 | 1 |
| DC current gain hFE(3) | hFE(3) | 25 |  |  |  | VCE=-2V, IC=-500mA | 1 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | -0.5 | V | IC=-500mA, IB=-50mA | 1 |
| Base-emitter voltage | VBE |  |  | -1 | V | VCE=-2V, IC=-500mA | 1 |
| Transition frequency | fT | 100 |  |  | MHz | VCE=-10V, IC=-50mA, f=100MHz | 1 |
| Collector-base voltage | VCBO |  |  | -100 | V | BCP53 column of maximum ratings | 1 |
| Collector-emitter voltage | VCEO |  |  | -80 | V | BCP53 column of maximum ratings | 1 |
| Emitter-base voltage | VEBO |  |  | -5 | V |  | 1 |
| Collector current, continuous | IC |  |  | -1 | A | Continuous | 1 |
| Peak pulse collector current | ICM |  |  | -2 | A | Peak pulse | 1 |
| Base current, continuous | IB |  |  | -100 | mA | Continuous | 1 |
| Peak pulse base current | IBM |  |  | -200 | mA | Peak pulse | 1 |
| Collector power dissipation | PC |  |  | 1.5 | W | Ta=25℃ (maximum ratings header) | 1 |
| Thermal resistance, junction to ambient | RθJA |  |  | 94 | ℃/W | Junction to ambient | 1 |
| Operation junction and storage temperature range | TJ,Tstg | -55 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `BCP53-10`
- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`
- 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files: `bcp53-10-etched.step` / `bcp53-10-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bcp53-10.step` / `bcp53-10.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/8589946280022736896) (4 pp, sha256 `7e883b2b2a4645e3`, 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/bcp53-10-datasheet.pdf)