The STMicroelectronics solid state relay, it is a monolithic device designed using VIPower technology. In overload conditions, channel turns OFF and ON automatically to maintain the junction temperature between TTSD and TR. If the case temperature reaches TCSD, the overloaded channel is turned OFF and restarts only when case temperature decreases down to TCR. In order to avoid high-peak current from the supply, when more than one channel is overloaded the TCSD restart is not simultaneous. Non overloaded channels continue to operate normally.

Shorted load protections
Junction over temperature protection
Case over temperature protection for thermal independence of the channels