The FKP300A from Sanken Electric is a MOSFET with Continous Drain Current -30 to 30 A, Drain Source Resistance 57 to 65 milli-ohm, Drain Source Breakdown Voltage 300 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4.5 V. Tags: Through Hole. More details for FKP300A can be seen below.