The MCU15N10B from Micro Commercial Components is a MOSFET with Continous Drain Current 15 A, Drain Source Resistance 65 to 110 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.5 V. Tags: Surface Mount. More details for MCU15N10B can be seen below.