The EFC2K103NUZTDG from onsemi is a MOSFET with Continous Drain Current 40 A, Drain Source Resistance 0.8 to 2.6 milliohm, Drain Source Breakdown Voltage 12 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage 1.3 V. Tags: Wafer, Chip. More details for EFC2K103NUZTDG can be seen below.