The EFC4K105NUZ from onsemi is a MOSFET with Continous Drain Current 25 A, Drain Source Resistance 1.8 to 7.2 milliohm, Drain Source Breakdown Voltage 22 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 1.3 V. Tags: Wafer, Chip. More details for EFC4K105NUZ can be seen below.