The DMP21D6UFB4 from Diodes Incorporated is a MOSFET with Continous Drain Current -0.58 A, Drain Source Resistance 670 to 2000 milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage -1 to -0.5 V. Tags: Surface Mount. More details for DMP21D6UFB4 can be seen below.