The IRF740 from JSMicro Semiconductor is a MOSFET with Continous Drain Current 10 A, Drain Source Resistance 0.45 to 0.55 ohm, Drain Source Breakdown Voltage 400 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3.0 to 4.0 V. Tags: Through Hole. More details for IRF740 can be seen below.