# BC848CW

**MSKSEMI** · Bipolar (BJT) · SOT-323

BC848CW from MSKSEMI, in a SOT-323. 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 NPN transistor; for the BC848W family the datasheet lists VEBO of 5 V maximum and a collector current of 0.1 A continuous. |
| 2 | EMITTER | passive | Emitter terminal of the NPN transistor; for the BC848W the datasheet lists an emitter-base voltage (VEBO) of 5 V maximum. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN transistor; for the BC848W the datasheet lists VCBO of 30 V and VCEO of 30 V maximum, with 0.1 A continuous collector current and 150 mW collector power dissipation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-323 |
| 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 voltage (BC848W column) | VCBO |  |  | 30 | V |  | 2 |
| Collector-emitter voltage (BC848W column) | VCEO |  |  | 30 | V |  | 2 |
| Emitter-base voltage (BC848W column) | VEBO |  |  | 5 | V |  | 2 |
| Collector current, continuous | IC |  |  | 0.1 | A |  | 2 |
| Collector power dissipation | PC |  |  | 150 | mW |  | 2 |
| Operating junction and storage temperature range | TJ,Tstg | -55 |  | 150 | ℃ |  | 2 |
| Thermal resistance, junction to ambient | RθJA |  | 833 |  | ℃/W |  | 2 |
| Collector-base breakdown voltage (BC848W) | VCBO | 30 |  |  | V | IC= 10µA, IE=0 | 3 |
| Collector-emitter breakdown voltage (BC848W) | VCEO | 30 |  |  | V | IC= 10mA, IB=0 | 3 |
| Emitter-base breakdown voltage (BC848W) | VEBO | 5 |  |  | V | IE= 1 µA, IC=0 | 3 |
| Base-emitter voltage, 2 mA row | VBE(on) | 580 | 660 | 700 | mV | VCE= 5V, IC= 2mA | 3 |
| Base-emitter voltage, 10 mA row | VBE(on) |  |  | 770 | mV | VCE= 5V, IC= 10mA | 3 |
| Collector-emitter saturation voltage, 10 mA row | VCE(sat) |  |  | 0.25 | V | IC=10mA, IB=0. 5mA | 3 |
| Collector-emitter saturation voltage, 100 mA row | VCE(sat) |  |  | 0.6 | V | IC=100mA, IB= 5mA | 3 |
| Base-emitter saturation voltage, 10 mA row | VBE(sat) |  |  | 0.7 | V | IC=10mA, IB=0. 5mA | 3 |
| Base-emitter saturation voltage, 100 mA row | VBE(sat) |  |  | 0.9 | V | IC=100mA, IB= 5mA | 3 |
| Collector cutoff current | ICBO |  |  | 15 | nA | VCB=30V | 3 |
| Transition frequency | fT | 100 |  |  | MHz | VCE= 5 V, IC= 10mA f=100MHz | 3 |
| Collector output capacitance | Cob |  |  | 4.5 | pF | VCB=10V,f=1MHz | 3 |

## CAD (KiCad official)

- Symbol: `BC848CW`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `bc848cw-etched.step` / `bc848cw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bc848cw.step` / `bc848cw.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/8590455367382695936) (6 pp, sha256 `0672fb1f88aef9aa`, 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/bc848cw-datasheet.pdf)