The APT4020SVFRG from Microchip Technology is a MOSFET with Continous Drain Current 23 A, Drain Source Resistance 200 milliohm, Drain Source Breakdown Voltage 400 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for APT4020SVFRG can be seen below.