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KO3401

Public Made by Adom

by adom

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

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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KO3401

KEXIN · MOSFETs · SOT-23-3

KO3401 from KEXIN, in a SOT-23-3. 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, with gate-source voltage rated at ±12 V (VGS).
2 Source passive Source terminal of the P-channel MOSFET; the datasheet gives no separate pin-level limit beyond the absolute maximum ratings.
3 Drain passive Drain terminal of the P-channel MOSFET, with drain-source voltage rated at -30 V (VDS) and continuous drain current of -4.2 A at Ta = 25℃.

Key specifications

Parameter Value
Manufacturer KEXIN
Package SOT-23-3
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℃ 1
Continuous Drain Current ID -3.5 A Ta = 70℃ 1
Pulsed Drain Current IDM -30 A 1
Power Dissipation PD 1.4 W Ta = 25℃ 1
Power Dissipation PD 1 W Ta = 70℃ 1
Thermal Resistance Junction-to-Ambient 90 ℃/W t ≤ 10s 1
Thermal Resistance Junction-to-Ambient 125 ℃/W 1
Thermal Resistance Junction-to-Case RthJC 60 ℃/W 1
Junction Temperature TJ 150 ℃ 1
Storage Temperature Range Tstg -55 150 ℃ 1
Drain-Source Breakdown Voltage VDSS -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℃ 2
Gate-Body Leakage Current IGSS -100 100 nA VDS=0V, VGS=±12V 2
Gate Threshold Voltage VGS(th) -0.4 -1 -1.3 V VDS=VGS, ID=-250μA 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 VGS=-10V, ID=-4.2A, TJ=125℃ 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
On State Drain Current ID(ON) -25 A VGS=-4.5V, VDS=-5V 2
Forward Transconductance gFS 7 11 S VDS=-5V, ID=-5A 2
Maximum Body-Diode Continuous Current IS -2.2 A 2
Diode Forward Voltage VSD -0.75 -1 V IS=-1A, VGS=0V 2

CAD (KiCad official)

  • Symbol: KO3401
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: ko3401-etched.step / ko3401-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ko3401.step / ko3401.glb are the bare package body.

Provenance

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

  • Datasheet: KEXIN datasheet (4 pp, sha256 0961686a9377e303, retrieved 2026-10-17, 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