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BCX55

Public Made by Adom

by adom

Changjing Bipolar (BJT), SOT-89-3L. 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
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 28d ago
viewers bcx55: viewers · Ray 28d ago
bcx55-etched.glb bcx55: factory component page (tier=lcsc) · Ray 28d ago
bcx55-etched.step bcx55: factory component page (tier=lcsc) · Ray 28d ago
bcx55-hero.glb bcx55: hero GLB from the etched model (keeps the MPN mark) · Ray 28d ago
bcx55-hero.overlay.json Publish 0.1.0 · Ray 28d ago
bcx55.glb Publish 0.1.0 · Ray 28d ago
bcx55.kicad_mod Publish 0.1.0 · Ray 28d ago
bcx55.kicad_sym Publish 0.1.0 · Ray 28d ago
bcx55.lbr Publish 0.1.0 · Ray 28d ago
bcx55.step Publish 0.1.0 · Ray 28d ago
package.json Publish 0.1.0 · Ray 28d ago
page.json Set visibility: public · Ray 28d ago
README.md Publish 0.1.0 · Ray 28d ago

BCX55

Changjing · Bipolar (BJT) · SOT-89-3L

BCX55 from Changjing, in a SOT-89-3L. 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 input Base terminal, with base current limited to 0.1 A continuous and 0.2 A peak (tp<1ms) per the absolute maximum ratings.
2 COLLECTOR passive Collector terminal; for BCX55 the collector-emitter voltage is 60 V and the collector-base voltage is 60 V, with collector current limited to 1 A.
3 EMITTER passive Emitter terminal, with emitter-base voltage limited to 5 V.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-89-3L
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: BCX55
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3L (KiCad packages3D, STEP)
  • 3D model files: bcx55-etched.step / bcx55-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bcx55.step / bcx55.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (5 pp, sha256 806bdb1ae53cc6d2, 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