# BC848BW

**Yangzhou Yangjie Elec Tech** · Bipolar (BJT) · SOT-323

BC848BW from Yangzhou Yangjie Elec Tech, 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 | B | input | Base of the NPN transistor; the datasheet states no pin-specific limit beyond VEBO 6 V maximum emitter-base voltage. |
| 2 | E | passive | Emitter of the NPN transistor; VEBO is 6 V max and collector current IC is 0.1 A max. |
| 3 | C | passive | Collector of the NPN transistor; for the BC848 types VCBO is 30 V max, VCEO is 30 V max, and IC is 0.1 A max. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| 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 breakdown voltage (BC848) | VCBO | 30 |  |  | V | IC=10µA, IE=0 | 2 |
| Collector-emitter breakdown voltage (BC848) | VCEO | 30 |  |  | V | IC=10mA, IB=0 | 2 |
| Emitter-base breakdown voltage | VEBO | 6 |  |  | V | IE=10µA, IC=0 | 2 |
| Collector-base cut-off current (BC848) | ICBO |  |  | 0.1 | μA | VCB=30 V, IE=0 | 2 |
| Collector-emitter cut-off current (BC848) | ICEO |  |  | 0.1 | μA | VCE=30 V, IB=0 | 2 |
| Emitter-base cut-off current | IEBO |  |  | 0.1 | μA | VEB=5 V, IC=0 | 2 |
| DC current gain (BC846BW/847BW/848BW group) | hFE | 200 |  | 450 |  | VCE=5V, IC=2mA | 2 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | 0.5 | V | IC=100mA, IB=5mA | 2 |
| Base-emitter saturation voltage | VBE(sat) |  |  | 1.1 | V | IC=100mA, IB=5mA | 2 |
| Transition frequency | fT | 100 |  |  | MHz | VCE=5 V, IC=10mA, f=100MHz | 2 |
| Collector-base output capacitance | Cob |  |  | 4.5 | pF | VCB=10V, f=1MHz | 2 |
| Collector-base voltage (BC848) | VCBO |  |  | 30 | V | Ta=25℃, BC848AW/BC848BW/BC848CW group | 1 |
| Collector-emitter voltage (BC848) | VCEO |  |  | 30 | V | Ta=25℃, BC848AW/BC848BW/BC848CW group | 1 |
| Emitter-base voltage | VEBO |  |  | 6 | V | Ta=25℃ | 1 |
| Collector current | IC |  |  | 0.1 | A | Ta=25℃ | 1 |
| Collector power dissipation | PC |  |  | 200 | mW | Ta=25℃ | 1 |
| Thermal resistance, junction to ambient | RΘJA |  |  | 625 | ℃/W |  | 1 |
| Junction temperature | Tj |  |  | 150 | ℃ |  | 1 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `BC848BW`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `bc848bw-etched.step` / `bc848bw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bc848bw.step` / `bc848bw.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917536041938944) (5 pp, sha256 `c6beb835255920b8`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/bc848bw-datasheet.pdf)