The CDM4-650 from Central Semiconductor is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 2440 to 2700 milliohm, Drain Source Breakdown Voltage 650 V, Gate Source Voltage 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for CDM4-650 can be seen below.