The DQS1-3-S3-S from CUI is a DC to DC Converter with Input Voltage 2.97 to 3.63 V, Output Voltage 1 3.3 V, Output Current 1 303 mA, Output Power 1 W, Isolation Voltage 1 kV. Tags: Through Hole, Buck/Step down. More details for DQS1-3-S3-S can be seen below.