The IXFA12N50P from Littelfuse is a MOSFET with Continous Drain Current 12 A, Drain Source Resistance 500 Milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 5.5 V. Tags: Surface Mount. More details for IXFA12N50P can be seen below.