The G1N50 from Goford Semiconductor is a MOSFET with Continous Drain Current 1 A, Drain Source Resistance 8750 to 10000 milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for G1N50 can be seen below.