# BCP52-16

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

BCP52-16 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; the datasheet rates the BCP52 emitter-base breakdown voltage V(BR)EBO at -5 V minimum and continuous collector current at -1 A. |
| 2 | COLLECTOR | passive | Collector terminal; the BCP52 maximum ratings are VCBO -60 V, VCEO -60 V, and continuous collector current -1 A, with total collector power dissipation of 1.5 W. |
| 3 | EMITTER | passive | Emitter terminal; the BCP52 absolute maximum emitter-base voltage is -5 V and the storage temperature range is -65 to +150 °C. |

## 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 | V(BR)CBO | -60 |  |  | V | IC=-0.1mA,IE=0 | 1 |
| Collector-emitter breakdown voltage | V(BR)CEO | -60 |  |  | 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=-30V, IE=0 | 1 |
| DC current gain (BCP52-16 rank) | hFE(2) | 100 |  | 250 |  | VCE=-2V, IC=-150mA | 1 |
| DC current gain | hFE(1) | 25 |  |  |  | VCE=-2V, IC=-5mA | 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 |  |  | -60 | V | Ta=25℃ | 1 |
| Collector-emitter voltage | VCEO |  |  | -60 | V | Ta=25℃ | 1 |
| Emitter-base voltage | VEBO |  |  | -5 | V | Ta=25℃ | 1 |
| Collector current, continuous | IC |  |  | -1 | A | Ta=25℃ | 1 |
| Collector power dissipation | PC |  |  | 1.5 | W | Ta=25℃ | 1 |
| Storage temperature range | Tstg | -65 |  | 150 | ℃ |  | 1 |
| Thermal resistance, junction to ambient | RθJA |  |  | 94 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `BCP52-16`
- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`
- 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files: `bcp52-16-etched.step` / `bcp52-16-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bcp52-16.step` / `bcp52-16.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/8586198901871689728) (4 pp, sha256 `4c5a767722af85b1`, 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/bcp52-16-datasheet.pdf)