QJxx30LH4 Series - 30 Amp High Temperature Alternistor Triacs

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This 30A high temperature Alternistor TRIAC, offered in TO-220 isolated package has 150°C maximum junction temperature and 350A ITSM(60Hz). This series enables easier thermal management and higher surge handling capability in AC power control applications such as heater control, motor speed control, lighting controls, and static switching relays. Alternistor TRIAC operates in quadrants I, II, & III and offers high performance in applications requiring high commutation capability.


  • High TJ of 150°C 
  • Voltage capability up to 800V 
  • Surge capability of 350A
  • Mechanically and thermally robust TO-220 clip-attach assembly
  • Electrically isolated for 2500Vrms 
  • Halogen free and RoHS compliant


TRIAC is an excellent AC switch in applications such as heating, lighting, and motor speed controls. 

Typical applications are:

  • Heater control such as coffee brewer, tankless water heater and infrared heater 
  • AC solid-state relays 
  • Light dimmers including incandescent and LED lighting 
  • Motor speed control in kitchen appliances, power tools, home/brow/white goods and light industrial applications as compressor motor control

Alternistor TRIAC is used with high inductive loads requiring the high commutation capability. Internally isolated packages offer better heat sinking with higher isolation voltage.


Access specifications, certifications, check availability and order parts below

Catalog #IT(RMS) (A)VDRM (V)IDRM@
di/dt @
Partner ECAD ModelsStockSamplesCompare
QJ8030LH5TP308005050501.5350Through HoleQJ8030LH5TPCheckOrder
QJ8030NH4RP308003535351.5350100Surface MountQJ8030NH4RPCheckOrder
QJ8030NH4TP308003535351.5350100Surface MountQJ8030NH4TPCheckOrder
QJ8030NH5RP308005050501.5350Surface MountQJ8030NH5RPCheckOrder
QJ8030NH5TP308005050501.5350Surface MountQJ8030NH5TPCheckOrder
QJ8030RH4TP308003535351.5350100Through HoleQJ8030RH4TPCheckOrder
QJ8030RH5TP308005050501.5350Through HoleQJ8030RH5TPCheckOrder
QJ8035LH4TP358003535351.55350100Through HoleQJ8035LH4TPCheckOrder
QJ8035LH5TP358005050501.55350Through HoleQJ8035LH5TPCheckOrder
QJ8035NH4RP358003535351.55350100Surface MountQJ8035NH4RPCheckOrder
QJ8035NH4TP358003535351.55350100Surface MountQJ8035NH4TPCheckOrder
QJ8035NH5RP358005050501.55350Surface MountQJ8035NH5RPCheckOrder
QJ8035NH5TP358005050501.55350Surface MountQJ8035NH5TPCheckOrder
QJ8035RH4TP358003535351.55350100Through HoleQJ8035RH4TPCheckOrder
QJ8035RH5TP358005050501.55350Through HoleQJ8035RH5TPCheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
QJ6030LH4TP HT Alternistor 600V 30A TO220L RoHS No 10/07/2021 PbFree No 10/07/2021 Yes
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