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A44-TA

Public Made by Adom

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

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Datasheet

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Contents

README

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A44-TA

Changjing · Bipolar (BJT) · TO-92

A44-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 EMITTER passive Emitter terminal of the A44 NPN transistor; emitter-base voltage is rated at 5 V maximum (VEBO) and collector current at 0.2 A continuous (0.3 A pulsed).
2 BASE passive Base terminal of the A44 NPN transistor; base drive for the device is specified in the datasheet at IB = 1 mA for IC = 10 mA saturation tests and 5 mA for IC = 50 mA.
3 COLLECTOR passive Collector terminal of the A44 NPN transistor; collector-base and collector-emitter voltages are rated at 400 V (VCBO and VCEO), with collector power dissipation of 625 mW.

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 breakdown voltage V(BR)CBO 400 V IC=100µA,IE=0 2
Collector-emitter breakdown voltage V(BR)CEO 400 V IC=1mA,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=400V,IE=0 2
Collector cut-off current ICEO 5 μA VCE=400V,IB=0 2
Emitter cut-off current IEBO 0.1 μA VEB=4V,IC=0 2
DC current gain hFE(1) 80 300 VCE=10V, IC=10mA 2
DC current gain hFE(2) 70 VCE=10V, IC=1mA 2
DC current gain hFE(3) 40 VCE=10V, IC=100mA 2
DC current gain hFE(4) 80 VCE=10V, IC=50mA 2
Collector-emitter saturation voltage VCE(sat)(1) 0.2 V IC=10mA,IB=1mA 2
Collector-emitter saturation voltage VCE(sat)(2) 0.3 V IC=50mA,IB=5mA 2
Base-emitter saturation voltage VBE(sat) 0.75 V IC=10mA,IB=1mA 2
Transition frequency fT 50 MHz VCE=20V, IC=10mA,f=30MHz 2
Collector-base voltage VCBO 400 V Ta=25℃ 1
Collector-emitter voltage VCEO 400 V Ta=25℃ 1
Emitter-base voltage VEBO 5 V Ta=25℃ 1
Collector current, continuous IC 0.2 A Ta=25℃ 1
Collector current, pulsed ICM 0.3 A Ta=25℃ 1
Collector power dissipation PC 625 mW Ta=25℃ 1
Operation junction and storage temperature range TJ,Tstg -55 150 ℃ 1
Thermal resistance, junction to ambient RθJA 200 ℃/W 1

CAD (KiCad official)

  • Symbol: A44-TA
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: a44-ta-etched.step / a44-ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); a44-ta.step / a44-ta.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (5 pp, sha256 2be5c17175ecdd2e, 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