The SiHH21N65E from Vishay is a MOSFET with Continous Drain Current 20.3 A, Drain Source Resistance 148 to 170 Milliohm, Drain Source Breakdown Voltage 650 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for SiHH21N65E can be seen below.