The MSJAC11N50B from Micro Commercial Components is a MOSFET with Continous Drain Current 11 A, Drain Source Resistance 350 to 380 milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2.5 to 3.5 V. Tags: Surface Mount. More details for MSJAC11N50B can be seen below.