The document introduces the features of four models of Cool MOS™ power transistors: SPP12N50C3, SPB12N50C3, SPI12N50C3, and SPA12N50C3, including new high voltage technology, ultra-low gate charge, periodic avalanche rating, extreme dv/dt rating, ultra-low effective capacitances, improved transconductance, and different package types and markings. The maximum ratings of each model are also listed, such as continuous drain current, pulsed drain current, avalanche energy, etc.