Microsemi Corporation is a manufacturer of defense, security, aerospace, enterprise, communications, medical, alternative energy, and industrial products for power-related applications. Major products offered by Microsemi are analog devices, mixed-signal and RF integrated circuits, customizable system-on-chips (cSoC), FPGAs, and complete subsystems. It has been based in Aliso Viejo, California since 2011, when it relocated its headquarters from Irvine, California.