The GCMX030A170S1-E1 from SemiQ is a MOSFET with Continous Drain Current 48 to 88 A, Drain Source Resistance 28 to 38 milli-ohm, Drain Source Breakdown Voltage 1700 V, Gate Source Voltage -10 to 25 V, Gate Source Threshold Voltage 1.8 to 4 V. Tags: Surface Mount. More details for GCMX030A170S1-E1 can be seen below.