The GT1003D from Goford Semiconductor is a MOSFET with Continous Drain Current 3 A, Drain Source Resistance 105 to 150 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.6 V. Tags: Surface Mount. More details for GT1003D can be seen below.