The MCAC100N08Y from Micro Commercial Components is a MOSFET with Continous Drain Current 100 A, Drain Source Resistance 3.6 to 4.5 milliohm, Drain Source Breakdown Voltage 80 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for MCAC100N08Y can be seen below.