The FC4B22180L from Panasonic Corporation is a MOSFET with Drain Source Resistance 7 to 22.6 milliohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage 8 V, Gate Source Threshold Voltage 0.35 to 1.4 V, Gate Charge 23 nC. Tags: Chip. More details for FC4B22180L can be seen below.