The FMD 40-06KC from Littelfuse is a MOSFET with Continous Drain Current 38 A, Drain Source Resistance 60 Milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.1 to 3.9 V. Tags: Through Hole. More details for FMD 40-06KC can be seen below.