The IRFD123 from Vishay is a MOSFET with Continous Drain Current 1.3 A, Drain Source Resistance 270 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for IRFD123 can be seen below.