The IRFR5505 from JSMicro Semiconductor is a MOSFET with Continous Drain Current -20 A, Drain Source Resistance 87 to 102 milli-ohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1.0 to -2.5 V. Tags: Surface Mount. More details for IRFR5505 can be seen below.