The JSM3401L from JSMicro Semiconductor is a MOSFET with Continous Drain Current -4.2 A, Drain Source Resistance 50 to 85 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -0.6 to -1.2 V. Tags: Surface Mount. More details for JSM3401L can be seen below.