component

BC857B-7-F

Public Made by Adom

by adom

Diodes Incorporated Bipolar Transistors - BJT, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttransistorsbc857b-7-ffactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 8d ago
viewers bc857b-7-f: viewers · Ray 8d ago
bc857b-7-f-etched.glb Publish 0.1.0 · Ray 8d ago
bc857b-7-f-etched.step bc857b-7-f: factory component page (tier=mfr) · Ray 8d ago
bc857b-7-f-hero.glb bc857b-7-f: hero GLB from the etched model (keeps the MPN mark) · Ray 8d ago
bc857b-7-f-hero.overlay.json Publish 0.1.0 · Ray 8d ago
bc857b-7-f.glb Publish 0.1.0 · Ray 8d ago
bc857b-7-f.kicad_mod Publish 0.1.0 · Ray 8d ago
bc857b-7-f.kicad_sym Publish 0.1.0 · Ray 8d ago
bc857b-7-f.lbr Publish 0.1.0 · Ray 8d ago
bc857b-7-f.step Publish 0.1.0 · Ray 8d ago
package.json Publish 0.1.0 · Ray 8d ago
page.json Set visibility: public · Ray 8d ago
README.md Publish 0.1.0 · Ray 8d ago

BC857B-7-F

Diodes Incorporated · Bipolar Transistors - BJT · SOT-23

BC857B-7-F from Diodes Incorporated, in a SOT-23. 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 of the PNP transistor, with a rated emitter-base voltage VEBO of -5.0 V and a peak base current IBM of -200 mA (single pulse).
2 E passive Emitter of the PNP transistor, with a rated peak emitter current IEM of -200 mA.
3 C passive Collector of the PNP transistor, with VCEO of -45 V and VCBO of -50 V for the BC857 types, a continuous current IC of -100 mA and a peak current ICM of -200 mA (single pulse).

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category Transistors
Pins 3

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: Finish, Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: BC857B-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bc857b-7-f-etched.step / bc857b-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc857b-7-f.step / bc857b-7-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (7 pp, sha256 9f19c49db2adb724, retrieved 2026-10-28, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+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