The DMP1055UFDB from Diodes Incorporated is a MOSFET with Continous Drain Current -3.9 A, Drain Source Resistance 37 to 215 milliohm, Drain Source Breakdown Voltage -12 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage -1 to -0.4 V. Tags: Surface Mount. More details for DMP1055UFDB can be seen below.