The FCAB21A50L from Panasonic Corporation is a MOSFET with Drain Source Resistance 1.55 to 6.10 milliohm, Drain Source Breakdown Voltage 12 V, Gate Source Voltage 8 V, Gate Source Threshold Voltage 0.35 to 1.4 V, Gate Charge 33 nC. Tags: Chip. More details for FCAB21A50L can be seen below.