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BC556-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.

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BC556-TA

Changjing · Bipolar (BJT) · TO-92

BC556-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 COLLECTOR passive Collector of the PNP transistor, rated at VCBO -80 V (BC556), VCEO -65 V (BC556) and continuous collector current -0.1 A.
2 BASE passive Base of the PNP transistor, which must not be driven beyond the emitter-base limit of VEBO -5 V.
3 EMITTER passive Emitter of the PNP transistor, with emitter-base breakdown voltage of -5 V minimum at IE=-100μA.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-92
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-Base Voltage VCBO -80 V BC556 1
Collector-Emitter Voltage VCEO -65 V BC556 1
Emitter-Base Voltage VEBO -5 V 1
Collector Current-Continuous IC -0.1 A 1
Collector Power Dissipation PC 625 mW 1
Thermal Resistance from Junction to Ambient RθJA 200 ℃/W 1
Operation Junction and Storage Temperature Range TJ,Tstg -55 150 ℃ 1
Collector-base breakdown voltage V(BR)CBO -80 V IC= -0.1mA,IE=0 2
Collector-emitter breakdown voltage V(BR)CEO -65 V IC=-2mA,IB=0 2
Emitter-base breakdown voltage V(BR)EBO -5 V IE=-100μA,IC=0 2
Collector cut-off current 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 120 800 VCE=-5V, IC=-2mA 2
Collector-emitter saturation voltage VCE(sat) -0.3 V IC=-10mA,IB=-0.5mA 2
Collector-emitter saturation voltage VCE(sat) -0.65 V IC=-100mA,IB=-5mA 2
Base-emitter saturation voltage VBE(sat) -0.8 V IC=-10mA,IB=-0.5mA 2
Base-emitter saturation voltage VBE(sat) -1 V IC=-100mA,IB=-5mA 2
Base-emitter voltage VBE -0.55 -0.7 V VCE=-5V, IC=-2mA 2
Base-emitter voltage VBE -0.82 V VCE=-5V, IC=-10mA 2
Collector output capacitance Cob 6 pF VCB=-10V,IE=0, f=1MHz 2
Transition frequency fT 150 MHz VCE=-5V,IC=-10mA, f=100MHz 2

CAD (KiCad official)

  • Symbol: BC556-TA
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: bc556-ta-etched.step / bc556-ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc556-ta.step / bc556-ta.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (4 pp, sha256 d56a67b6b9bbd958, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus off (skipped (clean text read)), 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