The SIFL9N20AD from First Silicon is a MOSFET with Continous Drain Current 4.5 to 9 A, Drain Source Resistance 0.20 to 0.45 ohm, Drain Source Breakdown Voltage 200 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.5 to 2.5 V. Tags: Surface Mount. More details for SIFL9N20AD can be seen below.