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2SA1037

Public Made by Adom

by adom

Changjing Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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2SA1037

Changjing · Bipolar (BJT) · SOT-23

2SA1037 from Changjing, in a SOT-23. 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, with emitter-base voltage limited to VEBO = -6 V and the base-driven saturation test specified at IC = -50 mA, IB = -5 mA.
2 EMITTER passive Emitter terminal, rated for emitter-base voltage VEBO = -6 V with emitter-base breakdown V(BR)EBO of -6 V at IE = -50 μA.
3 COLLECTOR passive Collector terminal, rated for collector-base voltage VCBO = -60 V, collector-emitter voltage VCEO = -50 V, continuous collector current IC = -150 mA, and collector power dissipation PC = 200 mW.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-23
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 breakdown voltage V(BR)CBO -60 V IC=-50μA,IE=0 1
Collector-emitter breakdown voltage V(BR)CEO -50 V IC=-1mA,IB=0 1
Emitter-base breakdown voltage V(BR)EBO -6 V IE=-50μA,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=-6V,IC=0 1
DC current gain hFE 120 560 VCE=-6V,IC=-1mA 1
Collector-emitter saturation voltage VCE(sat) -0.5 V IC=-50mA,IB=-5mA 1
Transition frequency fT 140 MHz VCE=-12V,IC=-2mA,f=30MHz 1
Collector output capacitance Cob 4 5 pF VCB=-12V,IE=0,f=1MHz 1
Collector-base voltage VCBO -60 V 1
Collector-emitter voltage VCEO -50 V 1
Emitter-base voltage VEBO -6 V 1
Collector current (continuous) IC 150 mA 1
Collector power dissipation PC 200 mW 1
Junction temperature TJ 150 ℃ 1
Storage temperature Tstg -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: 2SA1037
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: 2sa1037-etched.step / 2sa1037-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sa1037.step / 2sa1037.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (2 pp, sha256 c17ad5d84e9475e9, 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