The PEM1-S12-S3-S from CUI is a DC to DC Converter with Input Voltage 10.8 to 13.2 V, Output Voltage 1 3.3 V, Output Current 1 30 to 303 mA, Output Power 1000 mW, Isolation Voltage 3000 V. Tags: SIP, Buck/Step down. More details for PEM1-S12-S3-S can be seen below.