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C945-TA

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

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C945-TA

Changjiang Electronics Tech (CJ) · Bipolar Transistors - BJT · TO-92

C945-TA from Changjiang Electronics Tech (CJ), 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 TO-92 package, with emitter-base breakdown voltage V(BR)EBO of 5 V minimum at IE=100 µA.
2 COLLECTOR passive Collector terminal of the TO-92 package, rated for collector-base voltage VCBO of 60 V and collector-emitter voltage VCEO of 50 V.
3 BASE passive Base terminal of the TO-92 package, rated for emitter-base voltage VEBO of 5 V and continuous collector current IC of 150 mA.

Key specifications

Parameter Value
Manufacturer Changjiang Electronics Tech (CJ)
Package TO-92
Category Transistors
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 60 V 1
Collector-Emitter Voltage VCEO 50 V 1
Emitter-Base Voltage VEBO 5 V 1
Collector Current -Continuous IC 150 mA 1
Collector Power Dissipation PC 400 mW 1
Junction Temperature TJ 125 ℃ 1
Storage Temperature Tstg -55 125 ℃ 1
Collector-base breakdown voltage V(BR)CBO 60 V IC=1mA, IE=0 1
Collector-emitter breakdown voltage V(BR)CEO 50 V IC=100 A, IB=0 1
Emitter-base breakdown voltage V(BR)EBO 5 V IE=100 A, IC=0 1
Collector cut-off current ICBO 0.1 μA VCB=60V, IE=0 1
Emitter cut-off current IEBO 0.1 μA VEB=5V, IC=0 1
DC current gain hFE(1) hFE(1) 70 700 VCE=6V, IC=1mA 1
DC current gain hFE(2) hFE(2) 40 VCE=6V, IC=0.1mA 1
Collector-emitter saturation voltage VCE(sat) 0.3 V IC=100mA, IB=10mA 1
Base-emitter saturation voltage VBE(sat) 1 V IC=100mA, IB=10mA 1
Transition frequency fT 200 MHz VCE=6V, IC=10mA, f=30MHz 1
Collector output capacitance Cob 3 pF VCB=10V, IE=0, f=1MHz 1
Noise figure NF 10 dB VCE=6V, IC=0.1mA, RG=10kΩ, f=1MHz 1

CAD (KiCad official)

  • Symbol: C945-TA
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: c945-ta-etched.step / c945-ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); c945-ta.step / c945-ta.glb are the bare package body.

Provenance

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

  • Datasheet: Changjiang Electronics Tech (CJ) datasheet (1 pp, sha256 be28a244b614342c, retrieved 2026-10-27, 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