component

BC857BW

Public Made by Adom

by adom

HUXN 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
Name Last commit message Last updated
docs bc857bw: factory component page (tier=lcsc) · Ray 16d ago
viewers bc857bw: viewers · Ray 16d ago
bc857bw-etched.glb Publish 0.1.0 · Ray 17d ago
bc857bw-etched.step bc857bw: factory component page (tier=lcsc) · Ray 16d ago
bc857bw-hero.glb bc857bw: hero GLB from the etched model (keeps the MPN mark) · Ray 16d ago
bc857bw-hero.overlay.json Publish 0.1.0 · Ray 17d ago
bc857bw.glb Publish 0.1.0 · Ray 17d ago
bc857bw.kicad_mod Publish 0.1.0 · Ray 17d ago
bc857bw.kicad_sym bc857bw: factory component page (tier=lcsc) · Ray 16d ago
bc857bw.lbr bc857bw: factory component page (tier=lcsc) · Ray 16d ago
bc857bw.step Publish 0.1.0 · Ray 17d ago
package.json Publish 0.1.0 · Ray 17d ago
page.json Set visibility: public · Ray 16d ago
README.md bc857bw: factory component page (tier=lcsc) · Ray 16d ago

BC857BW

HUXN · Bipolar (BJT) · SOT-323

BC857BW from HUXN, 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 passive Base terminal of the BC857BW PNP transistor; the datasheet gives an emitter-base breakdown voltage VEBO of -5 V and a continuous collector current IC of -0.1 A.
2 EMITTER passive Emitter terminal of the BC857BW PNP transistor; the emitter-base rating is VEBO = -5 V.
3 COLLECTOR passive Collector terminal of the BC857BW PNP transistor; for the BC857W the maximum ratings are VCBO = -50 V and VCEO = -45 V, with collector power dissipation PC of 150 mW.

Key specifications

Parameter Value
Manufacturer HUXN
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 (BC857W) VCBO -50 V IC= -10μA, IE=0 2
Collector-emitter breakdown voltage (BC857W) VCEO -45 V IC= -10mA, IB=0 2
Emitter-base breakdown voltage VEBO -5 V IE= -1μA, IC=0 2
DC current gain (BC857BW, 857BW group) hFE 220 475 VCE= -5V, IC= -2mA 2
Collector cut-off current ICBO -15 nA VCB= -30 V , IE=0 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 capacitance Cob 4.5 pF VCB=-10V, f=1MHz 2
Collector-base voltage (BC857W) VCBO -50 V 1
Collector-emitter voltage (BC857W) VCEO -45 V 1
Emitter-base voltage VEBO -5 V 1
Collector current, continuous IC -0.1 A 1
Collector power dissipation PC 150 mW 1
Junction temperature TJ 150 ℃ 1
Storage temperature Tstg -65 150 ℃ 1

CAD (KiCad official)

  • Symbol: BC857BW
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: bc857bw-etched.step / bc857bw-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc857bw.step / bc857bw.glb are the bare package body.

Provenance

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

  • Datasheet: HUXN datasheet (4 pp, sha256 a217278754e52932, 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