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Revision as of 09:49, 29 June 2020 by Chao (talk | contribs) (Selection Guide)
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Working Method

Advantages of Mosfet

  • Optional use optical coupler, isolate signal, anti interferance.
  • High level signal turn ON, low to OFF, PWM to control speed

Common Used Applications

  • motor start and stop
  • solenoid valve
  • Bulb
  • LED Strip
  • Micro Water Pump
  • Solenoid Valve

Compare to Relay

  • High speed turn on and off
  • no noise, no spark, no interferance
  • longer life time

Parallel Connect MOSFET

  • Lower internal resistance
  • Higher passing current, higher driving power


  • VGS(th) 1-2.5V

Selection Guide

Type VDS (V) ID RDS(ON) Type C/O Mark Special
FR120N 100V 9.4A
LR7843 30V 161A
35N06 60 35A
  • RDS(ON) < 23mΩ (VGS = 10V)
  • RDS(ON) < 33mΩ (VGS = 4.5V)
  • RDS(ON) < 37mΩ (VGS = 4V)
CJ3402-N/CJ3407-P 30V 4A N/P CJ
AOD3400A 30V 5.7A AOD X0RB48
AOD3401 / AO3402 30V 4A SOT-23 P / N AOD
AOD3415 20V 4A - AO
AO3416 SOT-23 20V 6.5A
  • RDS(ON) (at VGS=4.5V) < 22mΩ
  • RDS(ON) (at VGS = 2.5V) < 26mΩ
  • RDS(ON) (at VGS = 1.8V) < 34mΩ
AOD484 30V 25A - AO
AOD4184A 40V 50A
  • RDS(ON) < 7mΩ (at VGS=10V)
  • RDS(ON) < 9.5mΩ (at VGS = 4.5V)
AOD417 -30V -25A
  • RDS(ON) < 34mΩ (VGS = -10V)
  • RDS(ON) < 55mΩ (VGS = -4.5V)

BSS138 20V 0.22A
  • RDS(ON) = 3.5Ω @ VGS = 10 V
  • RDS(ON) = 6.0Ω @ VGS = 4.5 V
AP85T03GH/J 30V 75A 6mΩ
IRFR1205 55V 44A 27mΩ
IRFR5305 -55V -31A 0.065Ω
IRF540 100V 33A 44mΩ
IRFR5410 -100V -13A 0.205mΩ
IRFR9120 -100V -6.6A 0.48Ω
APM4953 -30V -4.9A 53mΩ(typ.)@VGS=-10V Dual

IRLML2502-N SOT-23 20V 4.2A 00BF 45mΩ
IRLML5203 30V 2.4A -
IRLML6401 SOT-23 -12V -3.4A 0.05Ω
SI304BDL-N 30V 0.9A
SSM3J332R 30V 6A
FDN340 20V -2A P


Type Series Type VDS (V) ID RDS(ON) Mark
SI2301 SI P -20V 3.1A - A1SHB
SI2302 SI N 20V 2.4A - A2SHB
SI2305 SI P -8V 3.5A - A5SHB
Si2306 SI N 30V ~3A - A6SHB
Si2307 SI P -30V 2.7A - A7SHB
Si2308 SI N 60V ~2.0A - A8SHB
AO3401 AO P -30V ~4A - A19T
AO3402 AO N 30V ~4A - A29T
2N7002 CJ N 60V 0.3A - 7002