The R5542Z202B-E2-F from Nisshinbo Micro Devices is a Power Switch IC with Input Voltage 2.3 to 5.5 V, Input Current 0.000001 to 0.000003 A, Temperature Operating Range -40 to 85 Degree C. Tags: Wafer. More details for R5542Z202B-E2-F can be seen below.