The LME0505SC is a 1-output board-mount isolated DC to DC Converter with high efficiency for low power applications. The LME series 0.25W DC/DC converter is optimised for low-power operation and ideally suited to generate a negative supply where only a positive rail exists. It has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enamelled wire. While parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation.