# BCP52-16-MS

**MSKSEMI** · Bipolar (BJT) · SOT-223

BCP52-16-MS from MSKSEMI, 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 emitter-base breakdown rating is -5 V (VEBO) for this device family. |
| 2 | COLLECTOR | passive | Collector terminal of the BCP52-16-MS PNP transistor, rated for -1 A continuous collector current and VCEO of -60 V. |
| 3 | EMITTER | passive | Emitter terminal of the PNP transistor, the reference for the base-emitter voltage VBE, which is specified at -1 V for VCE=-2 V and IC=-500 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| 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 (BCP52) | V(BR)CBO | -60 |  |  | V | IC=-0.1mA, IE=0 | 2 |
| Collector-emitter breakdown voltage (BCP52) | V(BR)CEO | -60 |  |  | V | IC=-10mA, IB=0 | 2 |
| Base-emitter breakdown voltage | V(BR)EBO | -5 |  |  | V | IE=-10μA, IC=0 | 2 |
| Collector cut-off current | ICBO |  |  | -100 | nA | VCB=-30V, IE=0 | 2 |
| DC current gain hFE(1) | hFE(1) | 25 |  |  |  | VCE=-2V, IC=-5mA | 2 |
| DC current gain hFE(2) (-16 grade range) | hFE(2) | 100 |  | 250 |  | VCE=-2V, IC=-150mA | 2 |
| DC current gain hFE(3) | hFE(3) | 25 |  |  |  | VCE=-2V, IC=-500mA | 2 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | -0.5 | V | IC=-500mA, IB=-50mA | 2 |
| Base-emitter voltage | VBE |  |  | -1 | V | VCE=-2V, IC=-500mA | 2 |
| Transition frequency | fT | 100 |  |  | MHz | VCE=-10V, IC=-50mA, f=100MHz | 2 |
| Collector-base voltage | VCBO |  |  | -60 | V | Ta=25℃ | 2 |
| Collector-emitter voltage | VCEO |  |  | -60 | V | Ta=25℃ | 2 |
| Emitter-base voltage | VEBO |  |  | -5 | V | Ta=25℃ | 2 |
| Collector current, continuous | IC |  |  | -1 | A | Continuous | 2 |
| Collector power dissipation | PC |  |  | 1.5 | W | Ta=25℃ | 2 |
| Storage temperature range | Tstg | -65 |  | 150 | ℃ |  | 2 |
| Thermal resistance junction to ambient | RθJA |  |  | 94 | ℃/W | Junction to ambient | 2 |

## CAD (KiCad official)

- Symbol: `BCP52-16-MS`
- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`
- 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files: `bcp52-16-ms-etched.step` / `bcp52-16-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bcp52-16-ms.step` / `bcp52-16-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590233836111507456) (5 pp, sha256 `58d268e6dbd7574c`, retrieved 2026-10-17, 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-ms-datasheet.pdf)