The G34N20F from Goford Semiconductor is a MOSFET with Continous Drain Current 34 A, Drain Source Resistance 61 to 85 milliohm, Drain Source Breakdown Voltage 200 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for G34N20F can be seen below.