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CJ3420

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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Contents

README

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CJ3420

Changjing · MOSFETs · SOT-23

CJ3420 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 terminal of the N-channel MOSFET, rated for a gate-source voltage VGS of ±12 V.
2 SOURCE passive Source terminal of the MOSFET; the body-diode maximum continuous current IS is rated at 2 A.
3 DRAIN passive Drain terminal of the MOSFET, rated for a drain-source voltage VDS of 20 V and a continuous drain current ID of 6 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
Drain-Source Voltage VDS 20 V Ta=25℃ 1
Gate-Source Voltage VGS -12 12 V Ta=25℃ 1
Continuous Drain Current ID 6 A Ta=25℃ 1
Pulsed Drain Current IDM 25 A Ta=25℃ 1
Maximum Body-Diode Continuous Current IS 2 A Ta=25℃ 1
Power Dissipation PD 0.35 W Ta=25℃ 1
Thermal Resistance from Junction to Ambient RθJA 357 ℃/W 1
Junction Temperature TJ 150 ℃ 1
Storage Temperature Tstg -55 150 ℃ 1
Drain-source breakdown voltage V(BR)DSS 20 V VGS = 0V, ID =250µA 2
Gate-source leakage current IGSS -100 100 nA VDS =0V, VGS =±12V 2
Zero gate voltage drain current IDSS 1 µA VDS =16V, VGS =0V 2
Gate threshold voltage VGS(th) 0.5 0.7 1 V VDS =VGS, ID =250µA 2
Drain-source on-state resistance RDS(on) 19 24 mΩ VGS =10V, ID =6.0A 2
Drain-source on-state resistance RDS(on) 22 27 mΩ VGS =4.5V, ID =5.0A 2
Drain-source on-state resistance RDS(on) 35 42 mΩ VGS =2.5V, ID =4.0A 2
Drain-source on-state resistance RDS(on) 74 mΩ VGS =1.8V, ID =2.0A 2
Diode forward voltage VSD 0.75 1 V VGS =0V, IS=1A 2
Forward transconductance gfS 4 S VDS =5V, ID =3.8A 2
Input capacitance Ciss 630 pF VDS =10V, VGS =0V, f =1MHz 2
Output capacitance Coss 164 pF VDS =10V, VGS =0V, f =1MHz 2
Reverse transfer capacitance Crss 137 pF VDS =10V, VGS =0V, f =1MHz 2
Gate resistance Rg 1.5 Ω VDS =0V, VGS =0V, f =1MHz 2
Turn-on delay time td(on) 5.5 ns VGS=5V, VDS=10V, RL=1.7Ω, RGEN=6Ω 2
Rise time tr 14 ns VGS=5V, VDS=10V, RL=1.7Ω, RGEN=6Ω 2
Turn-off delay time td(off) 29 ns VGS=5V, VDS=10V, RL=1.7Ω, RGEN=6Ω 2
Fall time tf 10.2 ns VGS=5V, VDS=10V, RL=1.7Ω, RGEN=6Ω 2

CAD (KiCad official)

  • Symbol: CJ3420
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: cj3420-etched.step / cj3420-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj3420.step / cj3420.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (5 pp, sha256 25d6aa5cd1086044, retrieved 2026-10-15, 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