Murata Power Solutions DC/DC Converters: NMK Series Murata Power Solutions Single Output DC-DC Converter Series NMK featuring an industrial temperature range from -40ºC to 85ºC and 3kVDC isolation with 5V output minimum efficiency of 80% at 2W. Available in an industry standard SIP packaging, the NMK DC-DC Converter offers a power upgrade path from the 1W NMV series. Now available - 15 and 24 Vin models. View the new part numbers.