Room Heaters, Floor Heaters, Water Heaters, Ovens
Market Demands
  • No longer use relays
  • Heaters of 1.5kW to 3kW use 16A to 30A triacs
  • Heaters > 3kW use 30A to 45A triacs
  • Adjustable Heating Power by zero DC full/half cycle skipping guarantees low EMI
  • Continuous high current capability
  • Electronics must be able to withstand continuous high temperatures
  • High power application requires careful attention to triac and heatsink design


System Overview


Application Focus


WeEn Solutions
  • Planar passivated for best high voltage and high temperature ruggedness
  • 3-Quadrant Triacs with excellent immunity to false triggering
  • Excellent dynamic characteristics
  • Internally Insulated TO-220 (SOT78D) and Internally Insulated TO-3P (SOT1292) packages available, UL1557 certified
  • Current range up to 30A in IITO-220 and up to 45A in Internally Insulated TO-3P
  • High Tj(max)  of 150°C for good thermal margin