component

BC857BM

Public Made by Adom

by adom

Nexperia Bipolar (BJT), SOT-883. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 24d ago
viewers bc857bm: viewers · Ray 24d ago
bc857bm-etched.glb bc857bm: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
bc857bm-etched.step bc857bm: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
bc857bm-hero.glb bc857bm: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
bc857bm-hero.overlay.json bc857bm: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
bc857bm.glb plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 17d ago
bc857bm.kicad_mod Publish 0.1.0 · Ray 24d ago
bc857bm.kicad_sym Publish 0.1.0 · Ray 24d ago
bc857bm.lbr Publish 0.1.0 · Ray 24d ago
bc857bm.step plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 17d ago
package.json bc857bm: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
page.json bc857bm: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
README.md Publish 0.1.0 · Ray 24d ago

BC857BM

Nexperia · Bipolar (BJT) · SOT-883

BC857BM from Nexperia, in a SOT-883. 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 BC857BM PNP general purpose transistor; the datasheet gives no pin-specific limit, and the device peak base current IBM is rated at −100 mA on page 4.
2 emitter passive Emitter terminal of the BC857BM PNP general purpose transistor, carrying the emitter current of the device.
3 collector passive Collector terminal of the BC857BM PNP general purpose transistor; collector current is limited to −100 mA DC and −200 mA peak per the quick reference data.

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOT-883
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: BC857BM
  • Footprint: Package_TO_SOT_SMD:SOT-883
  • 3D model: SOT-883, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.45 mm nominal SOT height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: bc857bm-etched.step / bc857bm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc857bm.step / bc857bm.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (11 pp, sha256 d21cc1150021712e, 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