The 3070-S28 from Modular Devices is a DC to DC Converter with Input Voltage 86 to 158 V, Output Voltage 1 27.8 to 28.2 V, Output Current 1 0.232 A, Output Power 6500 mW, Isolation Voltage 100 to 500 Vdc. Tags: Through Hole, Module. More details for 3070-S28 can be seen below.