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BC3401

Public Made by Adom

by adom

CBI MOSFETs, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BC3401

CBI · MOSFETs · SOT-23

BC3401 from CBI, 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 GATE input Gate terminal of the P-channel MOSFET; the datasheet rates gate-source voltage at ±12 V (VGS).
2 SOURCE passive Source terminal of the P-channel MOSFET; the datasheet rates the maximum body-diode continuous current at -2.2 A (IS).
3 DRAIN passive Drain terminal of the P-channel MOSFET; the datasheet rates drain-source voltage at -30 V (VDS) and continuous drain current at -4.2 A at TA=25°C.

Key specifications

Parameter Value
Manufacturer CBI
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
Drain-Source Voltage VDS -30 V 1
Gate-Source Voltage VGS -12 12 V 1
Continuous Drain Current ID -4.2 A TA=25°C 1
Continuous Drain Current ID -3.5 A TA=70°C 1
Pulsed Drain Current IDM -30 A Note B: repetitive, pulse width limited by junction temperature 1
Power Dissipation PD 1.4 W TA=25°C 1
Power Dissipation PD 1 W TA=70°C 1
Junction and Storage Temperature Range TJ, TSTG -55 150 °C 1
Maximum Junction-to-Ambient RθJA 65 90 °C/W t ≤ 10s 1
Maximum Junction-to-Ambient RθJA 85 125 °C/W Steady-State 1
Maximum Junction-to-Lead RθJL 43 60 °C/W Steady-State 1
Drain-Source Breakdown Voltage BVDSS -30 V ID=-250µA, VGS=0V 2
Zero Gate Voltage Drain Current IDSS -1 µA VDS=-24V, VGS=0V 2
Zero Gate Voltage Drain Current IDSS -5 µA VDS=-24V, VGS=0V, TJ=55°C 2
Gate-Body Leakage Current IGSS -100 100 nA VDS=0V, VGS=±12V 2
Gate Threshold Voltage VGS(th) -0.7 -1 -1.3 V VDS=VGS, ID=-250µA 2
On State Drain Current ID(ON) -25 A VGS=-4.5V, VDS=-5V 2
Static Drain-Source On-Resistance RDS(ON) 42 50 mΩ VGS=-10V, ID=-4.2A 2
Static Drain-Source On-Resistance RDS(ON) 75 mΩ TJ=125°C 2
Static Drain-Source On-Resistance RDS(ON) 53 65 mΩ VGS=-4.5V, ID=-4A 2
Static Drain-Source On-Resistance RDS(ON) 80 120 mΩ VGS=-2.5V, ID=-1A 2
Diode Forward Voltage VSD -0.75 -1 V IS=-1A, VGS=0V 2
Maximum Body-Diode Continuous Current IS -2.2 A 2

CAD (KiCad official)

  • Symbol: BC3401
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bc3401-etched.step / bc3401-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc3401.step / bc3401.glb are the bare package body.

Provenance

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

  • Datasheet: CBI datasheet (5 pp, sha256 2a382a69230262f4, 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