Lowest RDS(on) *A 600 V SJ MOSFET in the novel top-side- cooled QDPAK, ideal for low-frequency switching applications & solid-state solutions The 600 V CoolMOS™ S7 SJ MOSFET family is optimized for low conduction losses and features the lowest RDS(on) in the market when it comes to high-voltage SJ MOSFETs. It comes with an unprecedented RDS(on) x price figure of merit and is a perfect fit for solid-state circuit breakers and relays, PLCs, battery protection, and active bridge rectification in high-power power supplies.