TRACOPOWER TRV 1W Isolated DC-DC Converter Through Hole, Voltage in 19.2 → 28.8 V dc, Voltage out Output 1: 3.3, Output Voltage: Output 1: 3.3 Vdc, Input Voltage Nominal: 24 V dc, Isolation Voltage: 5kV, Medical Approved: Yes, MPN: TRV 1-2410M