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CJ3401

Public Made by Adom

by adom

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

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cj3401-hero.glb cj3401: hero GLB from the etched model (keeps the MPN mark) · Ray 24d ago
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package.json Publish 0.1.0 · Ray 24d ago
page.json cj3401: specified limits as data (metadata.characteristics, 23 rows from the datasheet) · Ray 17d ago
README.md cj3401: specified limits as data (metadata.characteristics, 23 rows from the datasheet) · Ray 17d ago

CJ3401

Changjing · MOSFETs · SOT-23

CJ3401 from Changjing, 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 of the P-channel MOSFET; the datasheet rates gate-source voltage at ±12 V (VGS).
2 SOURCE passive Source of the P-channel MOSFET; the datasheet gives source-to-drain diode forward voltage VSD of -1 V at IS = -1 A and VGS = 0 V, but no separate source pin rating.
3 DRAIN passive Drain of the P-channel MOSFET; the datasheet rates drain-source voltage VDS at -30 V and continuous drain current ID at -4.2 A.

Key specifications

Parameter Value
Manufacturer Changjing
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
Gate-source voltage VGS -12 12 V Ta=25℃ 1
Drain-Source Voltage VDS -30 V Ta=25℃ 1
Continuous Drain Current ID -4.2 A Ta=25℃ 1
Power Dissipation PD 350 mW Ta=25℃ 1
Junction Temperature TJ 150 ℃ 1
Storage Temperature TSTG -55 150 ℃ 1
Thermal Resistance from Junction to Ambient RθJA 357 ℃/W t<5s 1
Drain-source breakdown voltage V(BR)DSS -30 V VGS = 0V, ID =-250µA 2
Zero gate voltage drain current IDSS -1 µA VDS =-24V,VGS = 0V 2
Gate-source leakage current IGSS -100 100 nA VGS =±12V, VDS = 0V 2
Drain-source on-resistance RDS(on) 65 mΩ VGS =-10V, ID =-4.2A 2
Drain-source on-resistance RDS(on) 75 mΩ VGS =-4.5V, ID =-4A 2
Drain-source on-resistance RDS(on) 90 mΩ VGS =-2.5V,ID=-1A 2
Forward transconductance gFS 7 S VDS =-5V, ID =-5A 2
Gate threshold voltage VGS(th) -0.7 -1.3 V VDS =VGS, ID =-250µA 2
Diode forward voltage VSD -1 V IS=-1A,VGS=0V 2
Input capacitance Ciss 954 pF 2
Output capacitance Coss 115 pF 2
Reverse transfer capacitance Crss 77 pF VDS =-15V,VGS =0V,f =1MHz 2
Turn-on delay time td(on) 6.3 ns 2
Turn-on rise time tr 3.2 ns 2
Turn-off delay time td(off) 38.2 ns 2
Turn-off fall time tf 12 ns VGS=-10V,VDS=-15V, RL=3.6Ω,RGEN=6Ω 2

CAD (KiCad official)

  • Symbol: CJ3401
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: cj3401-etched.step / cj3401-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj3401.step / cj3401.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (3 pp, sha256 2b45fbc44301e101, retrieved 2026-10-09, 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