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PXT3906

Public Made by Adom

by adom

TWGMC Bipolar (BJT), SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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PXT3906

TWGMC · Bipolar (BJT) · SOT-89

PXT3906 from TWGMC, in a SOT-89. 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; the datasheet gives no separate pin limit for this terminal beyond the absolute maximum ratings.
2 COLLECTOR passive Collector terminal; rated for a continuous collector current of -0.2 A and a collector-emitter voltage of -40 V (VCEO) per the maximum ratings.
3 EMITTER passive Emitter terminal; rated for an emitter-base voltage of -6 V (VEBO) per the maximum ratings.

Key specifications

Parameter Value
Manufacturer TWGMC
Package SOT-89
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 voltage VCBO -40 V 1
Collector-emitter voltage VCEO -40 V 1
Emitter-base voltage VEBO -6 V 1
Collector current, continuous IC -0.2 A 1
Collector power dissipation PC 0.5 W 1
Operation junction and storage temperature range TJ,Tstg -55 150 ℃ 1
Thermal resistance from junction to ambient RθJA 250 ℃/W 1
Collector-base breakdown voltage V(BR)CBO -40 V IC=-10μA,IE=0 1
Collector-emitter breakdown voltage V(BR)CEO -40 V IC=-1mA,IB=0 1
Emitter-base breakdown voltage V(BR)EBO -6 V IE=-10μA,IC=0 1
Collector cut-off current ICBO -0.05 μA VCB=-30V,IE=0 1
Emitter cut-off current IEBO -0.05 μA VEB=-6V,IC=0 1
Collector cut-off current (base open to emitter-base reverse bias) ICEX -0.05 μA VCB=-30V,VBE(off)=-3V 1
DC current gain hFE(1) 60 VCE=-1V,IC=-0.1mA 1
DC current gain hFE(2) 80 VCE=-1V,IC=-1mA 1
DC current gain hFE(3) 100 300 VCE=-1V,IC=-10mA 1
DC current gain hFE(5) 30 VCE=-1V,IC=-100mA 1
Collector-emitter saturation voltage VCE(sat)1 -0.25 V IC=-10mA,IB=-1mA 1
Collector-emitter saturation voltage VCE(sat)2 -0.4 V IC=-50mA,IB=-5mA 1
Base-emitter saturation voltage VBE(sat)1 -0.65 -0.85 V IC=-10mA,IB=-1mA 1
Base-emitter saturation voltage VBE(sat)2 -0.95 V IC=-50mA,IB=-5mA 1
Transition frequency fT 250 MHz VCE=-20V,IC=-10mA,f=100MHz 1
Collector capacitance Cc 4.5 pF VCB=-5V,IE=0,f=1MHz 1
Emitter capacitance Ce 10 pF VEB=-0.5V,IC=0,f=1MHz 1
Noise figure NF 4 dB VCE=-5V,IC=-0.1mA,f=10Hz-15.7kHz,RS=1KΩ 1
Delay time td 35 nS IC=-10mA,IB1=-IB2=-1mA 1
Rise time tr 35 nS IC=-10mA,IB1=-IB2=-1mA 1
Storage time tS 225 nS IC=-10mA,IB1=-IB2=-1mA 1
Fall time tf 75 nS IC=-10mA,IB1=-IB2=-1mA 1

CAD (KiCad official)

  • Symbol: PXT3906
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: pxt3906-etched.step / pxt3906-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pxt3906.step / pxt3906.glb are the bare package body.

Provenance

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

  • Datasheet: TWGMC datasheet (2 pp, sha256 ac03deb142a757f2, retrieved 2026-10-19, 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