component

BC546-TA

Public Made by Adom

by adom

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

componenttransistors-thyristorsbc546-tafactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
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 17d ago
viewers bc546-ta: viewers · Ray 17d ago
bc546-ta-etched.glb Publish 0.1.0 · Ray 17d ago
bc546-ta-etched.step bc546-ta: factory component page (tier=lcsc) · Ray 17d ago
bc546-ta-hero.glb bc546-ta: hero GLB from the etched model (keeps the MPN mark) · Ray 17d ago
bc546-ta-hero.overlay.json Publish 0.1.0 · Ray 17d ago
bc546-ta.glb Publish 0.1.0 · Ray 17d ago
bc546-ta.kicad_mod Publish 0.1.0 · Ray 17d ago
bc546-ta.kicad_sym Publish 0.1.0 · Ray 17d ago
bc546-ta.lbr Publish 0.1.0 · Ray 17d ago
bc546-ta.step Publish 0.1.0 · Ray 17d ago
package.json Publish 0.1.0 · Ray 17d ago
page.json Set visibility: public · Ray 17d ago
README.md Publish 0.1.0 · Ray 17d ago

BC546-TA

Changjing · Bipolar (BJT) · TO-92-3

BC546-TA from Changjing, in a TO-92-3. 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 COLLECTOR passive Collector terminal of the NPN transistor; the datasheet gives VCEO up to 65 V (BC546), IC continuous 0.1 A, and PC 625 mW for the device.
2 BASE passive Base terminal of the NPN transistor; the datasheet gives VEBO up to 6 V (BC546/BC547) and 5 V (BC548) and the base-emitter drive conditions used for VBE(sat) (IC=100mA, IB=5mA).
3 EMITTER passive Emitter terminal of the NPN transistor; the datasheet gives the emitter-base breakdown condition IE=10μA, IC=0 with a minimum of 5 V to 6 V depending on variant.

Key specifications

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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Collector-emitter voltage (BC546) VCEO 65 V 1
Collector-base voltage (BC546) VCBO 80 V 1
Emitter-base voltage (BC546) VEBO 6 V 1
Collector current-continuous IC 0.1 A 1
Collector power dissipation PC 625 mW 1
Junction temperature Tj 150 ℃ 1
Storage temperature Tstg -55 150 ℃ 1
Thermal resistance from junction to ambient RθJA 200 ℃/W 1
Collector-base breakdown voltage (BC546) V(BR)CBO 80 V IC= 0.1mA,IE=0 2
Collector-emitter breakdown voltage (BC546) V(BR)CEO 65 V IC=1mA,IB=0 2
Emitter-base breakdown voltage (BC546) V(BR)EBO 6 V IE=10μA,IC=0 2
Collector cut-off current (BC546) ICBO 0.1 μA VCB=70V,IE=0 2
Emitter cut-off current IEBO 0.1 μA VEB=5V,IC=0 2
DC current gain hFE 110 800 VCE=5V, IC=2mA 2
Collector-emitter saturation voltage VCE(sat) 0.3 V IC=100mA,IB=5mA 2
Base-emitter saturation voltage VBE(sat) 1.1 V IC=100mA,IB=5mA 2
Base-emitter voltage VBE 0.58 0.7 V VCE=5V, IC=2mA 2
Base-emitter voltage VBE 0.75 V VCE=5V, IC=10mA 2
Collector output capacitance Cob 4.5 pF VCB=10V,IE=0, f=1MHz 2
Transition frequency fT 150 MH VCE=5V,IC=10mA, f=100MHz 2

CAD (KiCad official)

  • Symbol: BC546-TA
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92-3 (KiCad packages3D, STEP)
  • 3D model files: bc546-ta-etched.step / bc546-ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc546-ta.step / bc546-ta.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (2 pp, sha256 068ebd7ca4658019, retrieved 2026-10-18, 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