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2SA73

Public Made by Adom

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

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2SA73

UMW · Bipolar Transistors - BJT · SOT-23

2SA73 from UMW, 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 B input BASE terminal of the 2SA73 PNP transistor in the SOT-23 package.
2 E passive EMITTER terminal of the 2SA73 PNP transistor in the SOT-23 package.
3 C passive COLLECTOR terminal of the 2SA73 PNP transistor in the SOT-23 package; the datasheet rates collector-base voltage at -60 V and collector current at -150 mA.

Key specifications

Parameter Value
Manufacturer UMW
Package SOT-23
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 IC -150 mA 1
Collector Power Dissipation PC 200 mW 1
Thermal Resistance From Junction To Ambient RθJA 625 °C/W 1
Junction Temperature TJ 150 °C 1
Storage Temperature TSTG -55 150 °C 1
Collector-base breakdown voltage V(BR)CBO -60 V IC=-5μA, IE=0 2
Collector-emitter breakdown voltage V(BR)CEO -50 V IC=-1mA, IB=0 2
Emitter-base breakdown voltage V(BR)EBO -5 V IE=-50μA, IC=0 2
Collector cut-off current ICBO -0.1 μA VCB=-60V, IE=0 2
Emitter cut-off current IEBO -0.1 μA VCB=-5V, IE=0 2
DC current gain hFE 120 475 VCE=-6V, IC=-1mA 2
Collector-emitter saturation voltage VCE(sat) -0.3 V IC=-100mA, IB=-10mA 2
Collector Output Capacitance Cob 4.5 7 pf VCE=-10V, IE=0, f=1MHz 2

CAD (KiCad official)

  • Symbol: 2SA73
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: 2sa73-etched.step / 2sa73-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sa73.step / 2sa73.glb are the bare package body.

Provenance

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

  • Datasheet: UMW datasheet (6 pp, sha256 3c3df1d77355024c, 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 (audit)), 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