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2SA1225

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Changjiang Electronics Tech (CJ) Bipolar Transistors - BJT, TO-252-2L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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2SA1225

Changjiang Electronics Tech (CJ) · Bipolar Transistors - BJT · TO-252-2L

2SA1225 from Changjiang Electronics Tech (CJ), in a TO-252-2L. 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 of the PNP transistor; VEBO max is -5 V and V(BR)EBO is -5 V min at IE=-1 mA.
2 COLLECTOR passive Collector terminal; VCBO and VCEO are -160 V, IC max is -1.5 A.
3 EMITTER passive Emitter terminal of the PNP transistor, common reference for VCE and VBE specifications.

Key specifications

Parameter Value
Manufacturer Changjiang Electronics Tech (CJ)
Package TO-252-2L
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 -160 V Ta=25℃ 1
Collector-Emitter Voltage VCEO -160 V Ta=25℃ 1
Emitter-Base Voltage VEBO -5 V Ta=25℃ 1
Collector Current IC -1.5 A Ta=25℃ 1
Collector Power Dissipation PC 1 W Ta=25℃ 1
Junction Temperature Tj 150 ℃ Ta=25℃ 1
Storage Temperature Tstg -55 150 ℃ Ta=25℃ 1
Collector-base breakdown voltage V(BR)CBO -160 V IC=-1mA ,IE=0 2
Collector-emitter breakdown voltage V(BR)CEO -160 V IC=-10mA, IB=0 2
Emitter-base breakdown voltage V(BR)EBO -5 V IE=-1mA,IC=0 2
Collector cut-off current ICBO -0.1 μA VCB=160V,IE=0 2
Emitter cut-off current IEBO -0.1 μA VEB=-5V,IC=0 2
DC current gain hFE 70 240 VCE=-5V, IC=-0.1A 2
Collector-emitter saturation voltage VCE(sat) -1.5 V IC=-0.5A,IB=-50mA 2
Base-emitter voltage VBE -1 V VCE=-5V, IC=-0.5A 2
Transition frequency fT 100 MHz VCE=-10V ,IC=-100mA 2
Collector output capacitance Cob 30 pF VCB=-10V ,IE=0,f=1MHz 2

CAD (KiCad official)

  • Symbol: 2SA1225
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2L (KiCad packages3D, STEP)
  • 3D model files: 2sa1225-etched.step / 2sa1225-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sa1225.step / 2sa1225.glb are the bare package body.

Provenance

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

  • Datasheet: Changjiang Electronics Tech (CJ) datasheet (5 pp, sha256 0adea613556c8ef2, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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