PQMCE1-S 1W DC-DC Converters CUI Inc PQMCE1-S 1W DC-DC Converters are compact, regulated converters that provide 1W output power and 1500VDC isolation over a wide -40°C to +85°C operating temperature range. These DC-DC converters feature 1:1 input and continuous short-circuit protection. The PQMCE1-S series provides a rugged, IEC 62368-1-certified solution for a variety of industrial, test and measurement, and telecommunications applications. CUI Inc PQMCE1-S 1W DC-DC Converters offer up to 73% efficiency and require no heat sink, making it ideal for applications where board space is at a premium and maximizing energy efficiency is a concern.