The FK4B0613ZL from Panasonic Corporation is a MOSFET with Continous Drain Current 5.1 A, Drain Source Resistance 41 to 85 Milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -10 to 20 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Chip. More details for FK4B0613ZL can be seen below.