Active TRIAC for AC Load Switching
The ACST830-8GTR: The 800 V off-state voltage and 8 A RMS on-state current cover common AC line switching in appliances, lighting controls, and motor drives. The non-repetitive surge rating of 80 A at 50 Hz and 84 A at 60 Hz means it can handle inrush from incandescent lamps or capacitor loads without failing.
Gate Drive and Thermal Considerations
Maximum gate trigger current is 30 mA and gate trigger voltage is 1 V — low enough to be driven directly by a microcontroller I/O pin or a logic-level optocoupler, simplifying the drive circuit. The 30 mA holding current ensures the TRIAC stays latched once triggered, even with lightly inductive loads. The D2PAK package (TO-263-3) has a large exposed thermal tab on the bottom. For 8 A RMS conduction, the PCB copper area under the tab must be sized to keep the junction temperature within the -40°C to 125°C operating range. The thermal resistance from junction to case (RθJC) is not listed here, but the tab should be soldered to a dedicated copper plane for heat spreading.
Sourcing and Compliance
It is ROHS3 compliant, meeting the latest EU exemption requirements. Sourced through authorized and independent distribution channels; availability and current pricing are confirmed at RFQ.