The FDD8453LZ from onsemi is a MOSFET with Continous Drain Current 50 A, Drain Source Resistance 6.7 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 3 V. Tags: Surface Mount. More details for FDD8453LZ can be seen below.