The STW12N150K5 from STMicroelectronics is a MOSFET with Continous Drain Current 7 A, Drain Source Resistance 1600 to 1900 Milliohm, Drain Source Breakdown Voltage 1500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Through Hole. More details for STW12N150K5 can be seen below.