800 V blocking, 6 A conduction — sizing for 240 VAC loads
The ACST610-8T: Rated for 800 V off-state voltage and 6 A RMS on-state current, this sensitive-gate TRIAC comfortably handles 240 VAC line-voltage loads with margin for mains transients. The 45 A / 47 A non-repetitive surge rating (50/60 Hz) means it can survive the inrush from a motor start or a capacitive load without commutating out of spec.
Logic-level trigger — direct drive from a microcontroller
With a maximum gate trigger current of 10 mA and a gate trigger voltage of just 1 V, the ACST610-8T qualifies as a logic-level or sensitive-gate TRIAC. The 25 mA holding current ensures the device latches on once triggered and does not drop out at low load currents.
Through-hole TO-220-3 — standard power footprint
Housed in a TO-220-3 through-hole package, the ACST610-8T mounts into the same footprint as countless other power TRIACs and thyristors. The tab is the main terminal (MT2), so the heatsink must be electrically isolated or the system must tolerate the tab at line potential. The tube packaging suits manual insertion or low-volume automated assembly.
ROHS3 compliance satisfies EU and global regulatory requirements without a waiver.