The STH30N65DM6-7AG from STMicroelectronics is a MOSFET with Continous Drain Current 28 A, Drain Source Resistance 102 to 115 Milliohm, Drain Source Breakdown Voltage 650 V, Gate Source Voltage - 25 to 25 V, Gate Source Threshold Voltage 3.25 to 4.75 V. Tags: Surface Mount. More details for STH30N65DM6-7AG can be seen below.