component

BC857CW

Public Made by Adom

by adom

Nexperia Bipolar (BJT), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 26d ago
viewers bc857cw: viewers · Ray 26d ago
bc857cw-etched.glb bc857cw: factory component page (tier=lcsc) · Ray 26d ago
bc857cw-etched.step bc857cw: factory component page (tier=lcsc) · Ray 26d ago
bc857cw-hero.glb bc857cw: hero GLB from the etched model (keeps the MPN mark) · Ray 26d ago
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BC857CW

Nexperia · Bipolar (BJT) · SOT-323

BC857CW from Nexperia, 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 passive Base terminal of the PNP transistor, which controls collector-emitter current; the datasheet gives no separate pin limit for this terminal beyond the device limiting values (emitter-base voltage VEBO -5 V, peak base current IBM -200 mA).
2 E passive Emitter terminal of the PNP transistor; the datasheet gives no separate pin limit for this terminal beyond the device limiting values (emitter-base voltage VEBO -5 V, collector current IC -100 mA).
3 C passive Collector terminal of the PNP transistor; limited to -100 mA continuous collector current (ICM -200 mA peak) and, for the BC857W family, VCEO -45 V with the base open.

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOT-323
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: BC857CW
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: bc857cw-etched.step / bc857cw-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc857cw.step / bc857cw.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (13 pp, sha256 6ecc839c70f13953, retrieved 2026-10-09, 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