The 3415A from Goford Semiconductor is a MOSFET with Continous Drain Current -4 A, Drain Source Resistance 28 to 75 milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -10 to 10 V, Gate Source Threshold Voltage -1.1 to -0.45 V. Tags: Surface Mount. More details for 3415A can be seen below.