component
BC856BWQ
Public Made by Adomby adom
Yangzhou Yangjie Elec Tech Bipolar (BJT), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownBC856BWQ
Yangzhou Yangjie Elec Tech · Bipolar (BJT) · SOT-323
BC856BWQ 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 PNP transistor; the Emitter-Base voltage VEBO is limited to -5 V. |
| 2 | E | passive | Emitter of the PNP transistor; VEBO is limited to -5 V. |
| 3 | C | passive | Collector of the PNP transistor; VCEO is -65 V and continuous IC is -100 mA for the BC856 family. |
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 (BC856) | VCBO | -80 | V | IC= -10uA, IE=0 | 2 | ||
| Collector-emitter breakdown voltage (BC856) | VCEO | -65 | V | IC= -10mA, IB=0 | 2 | ||
| Emitter-base breakdown voltage | VEBO | -5 | V | IE= -1uA, IC=0 | 2 | ||
| Collector-base cut-off current | ICBO | -0.1 | uA | VCB=-30V, IE=0 | 2 | ||
| Emitter-base cut-off current | IEBO | -0.1 | uA | VEB=-5 V, IC=0 | 2 | ||
| DC current gain (BC856BWQ group) | hFE | 220 | 475 | VCE= -5V, IC= -2mA | 2 | ||
| Collector-emitter saturation voltage | VCE(sat) | -0.65 | 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=-5V, IC=-10mA, f=100MHz | 2 | ||
| Collector-base voltage (BC856) | VCBO | -80 | V | Maximum Ratings, Ta=25℃ | 1 | ||
| Collector-emitter voltage (BC856) | VCEO | -65 | V | Maximum Ratings, Ta=25℃ | 1 | ||
| Emitter-base voltage | VEBO | -5 | V | Maximum Ratings, Ta=25℃ | 1 | ||
| Collector current, continuous | IC | -100 | mA | Maximum Ratings, Ta=25℃ | 1 | ||
| Total device dissipation | PD | 200 | mW | Maximum Ratings, Ta=25℃ | 1 | ||
| Junction temperature | Tj | -55 | 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:
BC856BWQ - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
bc856bwq-etched.step/bc856bwq-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bc856bwq.step/bc856bwq.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Yangzhou Yangjie Elec Tech datasheet (5 pp, sha256
28634274670ee4ad, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).