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BC857BS

Public Made by Adom

by adom

FUXINSEMI Bipolar (BJT), SOT-363. 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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BC857BS

FUXINSEMI · Bipolar (BJT) · SOT-363

BC857BS from FUXINSEMI, in a SOT-363. 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 E1 passive Emitter of transistor 1 (PNP); emitter-base voltage limit -5 V, continuous collector current -0.2 A per the maximum ratings.
2 B1 passive Base of transistor 1 (PNP); VCE(sat) max -0.3 V at IC=-10 mA, IB=-0.5 mA.
3 C2 passive Collector of transistor 2 (PNP); collector-emitter voltage limit -45 V and collector-base voltage limit -50 V.
4 E2 passive Emitter of transistor 2 (PNP); emitter-base voltage limit -5 V.
5 B2 passive Base of transistor 2 (PNP); hFE 250-475 for the BC857BS rank at VCE=-5 V, IC=-2 mA.
6 C1 passive Collector of transistor 1 (PNP); collector-emitter voltage limit -45 V and collector-base voltage limit -50 V.

Key specifications

Parameter Value
Manufacturer FUXINSEMI
Package SOT-363
Category Transistors/Thyristors
Pins 6

CAD (KiCad official)

  • Symbol: BC857BS
  • Footprint: Package_TO_SOT_SMD:SOT-363_SC-70-6
  • 3D model: SOT-363 (KiCad packages3D, STEP)
  • 3D model files: bc857bs-etched.step / bc857bs-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc857bs.step / bc857bs.glb are the bare package body.

Provenance

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

  • Datasheet: FUXINSEMI datasheet (3 pp, sha256 7a58bf4848642643, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (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