component

BF420-TA

Public Made by Adom

by adom

Changjing Bipolar (BJT), TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttransistors-thyristorsbf420-tafactory-2.0.0extractor-text
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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 28d ago
viewers bf420-ta: viewers · Ray 28d ago
bf420-ta-etched.glb bf420-ta: factory component page (tier=lcsc) · Ray 28d ago
bf420-ta-etched.step bf420-ta: factory component page (tier=lcsc) · Ray 28d ago
bf420-ta-hero.glb bf420-ta: hero GLB from the etched model (keeps the MPN mark) · Ray 28d ago
bf420-ta-hero.overlay.json Publish 0.1.0 · Ray 28d ago
bf420-ta.glb Publish 0.1.0 · Ray 28d ago
bf420-ta.kicad_mod Publish 0.1.0 · Ray 28d ago
bf420-ta.kicad_sym Publish 0.1.0 · Ray 28d ago
bf420-ta.lbr Publish 0.1.0 · Ray 28d ago
bf420-ta.step Publish 0.1.0 · Ray 28d ago
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README.md Publish 0.1.0 · Ray 28d ago

BF420-TA

Changjing · Bipolar (BJT) · TO-92

BF420-TA from Changjing, in a TO-92. 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 EMITTER passive Emitter terminal of the NPN transistor; the datasheet's maximum emitter-base voltage (VEBO) rating is 5 V.
2 COLLECTOR passive Collector terminal of the NPN transistor; maximum collector-base and collector-emitter voltages are 300 V for BF420 and 250 V for BF422, with 100 mA continuous collector current.
3 BASE passive Base terminal of the NPN transistor; DC current gain hFE is 50 at VCE=20 V, IC=25 mA.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-92
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: BF420-TA
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: bf420-ta-etched.step / bf420-ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bf420-ta.step / bf420-ta.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (5 pp, sha256 e2e62393384852fe, 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