The JSM2050 from JSMicro Semiconductor is a MOSFET with Continous Drain Current 20 to 50 A, Drain Source Resistance 5.2 to 8.5 milli-ohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 0.5 to 1.0 V. Tags: Surface Mount. More details for JSM2050 can be seen below.