The CPW3-0600S004B from Wolfspeed is a Power Diode with Forward Current 4 A, Forward Voltage 1.5 to 2.4 V, Reverse Current 0.01 to 0.1 mA, Reverse Voltage 600 V, Repetitive Peak Reverse Voltage 600 V. Tags: Chip. More details for CPW3-0600S004B can be seen below.