The FKP250A from Sanken Electric is a MOSFET with Continous Drain Current -50 to 50 A, Drain Source Resistance 37 to 43 milli-ohm, Drain Source Breakdown Voltage 250 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4.5 V. Tags: Through Hole. More details for FKP250A can be seen below.