LJxx06xx/QJxx06xHx Series - 6 Amp High Temp Sensitive & Alternistor (High Commutation) Triacs

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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

This 6 A High Temperature Alternistor Triac solid state switch series is designed for AC switching and phase control applications such as motor speed and temperature modulation controls, lighting controls, and static switching relays.

Sensitive type components guarantee gate control in Quadrants I & IV needed for digital control circuitry.

Standard type components only operate in quadrants I, II, & III and are used in circuits requiring high dv/dt capability.


  • 150°C maximum junction temperature
  • Voltage capability up to 600V
  • Surge capability up to 72A at 60Hz half cycle
  • Solid-state switching eliminates arcing or contact bounce that create voltage transients
  • No contacts to wear out from reaction of switching events
  • Restricted (or limited) RFI generation, depending on activation point of sine wave
  • Requires only a short gate activation pulse in each half-cycle
  • Halogen free and RoHS compliant


Excellent for AC switching and phase control applications such as heating, lighting, and motor speed controls. Typical applications are AC solid-state switches, light dimmers, power tools, home/brown goods and white goods appliances. Alternistor Triacs (no snubber required) are used in applications with high inductive loads requiring the highest commutation performance. Internally constructed isolated packages are offered for ease of heat sinking with highest isolation voltage.

Access specifications, certifications, check availability and order parts below

Catalog #SizeIT(RMS) (A)VDRM (V)IDRM@
di/dt @
LJ4006D8RPTO25264000.01101010201.47270Surface MountCheckOrder
LJ4006D8TPTO25264000.01101010201.47270Surface MountCheckOrder
LJ4006V8TPTO25164000.01101010201.47270Through Hole RadialCheckOrder
LJ6006D8RPTO25266000.01101010201.47270Surface MountCheckOrder
LJ6006D8TPTO25266000.01101010201.47270Surface MountCheckOrder
LJ6006V8TPTO25166000.01101010201.47270Through Hole RadialCheckOrder
QJ4006DH3RPTO25264000.011010101.47270Surface MountCheckOrder
QJ4006DH3TPTO25264000.011010101.47270Surface MountCheckOrder
QJ4006DH4RPTO25264000.013535351.47270Surface MountCheckOrder
QJ4006DH4TPTO25264000.013535351.47270Surface MountCheckOrder
QJ4006VH3TPTO25164000.011010101.47270Through Hole RadialCheckOrder
QJ4006VH4TPTO25164000.013535351.47270Through Hole RadialCheckOrder
QJ6006DH3RPTO25266000.011010101.47270Surface MountCheckOrder
QJ6006DH3TPTO25266000.011010101.47270Surface MountCheckOrder
QJ6006DH4RPTO25266000.013535351.47270Surface MountCheckOrder
QJ6006DH4TPTO25266000.013535351.47270Surface MountCheckOrder
QJ6006VH3TPTO25166000.011010101.47270Through Hole RadialCheckOrder
QJ6006VH4TPTO25166000.013535351.47270Through Hole RadialCheckOrder

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