ST's ACS Triacs, or ACST, act as a Triac, but with an enhanced voltage-transient clamping and absorbing capability.
Both transients generated by load commutation and those coming from the mains line, such as those described in IEC 61000-4-5, are successfully absorbed by the device and the system. The clamping and crowbar functions of the ACST ensure safe transient behavior for the system and the ACST. The circuit can thus be simplified, with no need for MOV or snubber circuits.
These devices have 800 V blocking capability, with standard and logic level gate choices.
They are available in Fullpack, IPAK, DPAK, D²PAK or I²PAK packages.
ST’s 8H Triacs have been designed for Industrial, Building, Residential, Appliances. Based on the new ST’s technology, the 8H Triacs are able to work at 800V & 150°C without compromise. It makes 8H Triacs the right choice to run in very hot confined electronic environment and improve the reliability of your system. Thanks to 8H Triacs robust dynamic turn-off commutation and high noise immunity at high temperature you can reduce your system size while increasing functional safety.