The IRFBC40L from Vishay is a MOSFET with Continous Drain Current 6.2 A, Drain Source Resistance 1200 milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for IRFBC40L can be seen below.