Recom 1W SIP Single Output Unregulated Isolated DC-DC Converter - ROE Series. The ROE series is part of the Recom Econoline. This is a DC/DC unregulated converter, single output, SIP4, 1W. The Recom ROE DC/DC converter features an operating temperature range of -40°C to +85°C. This DC/DC converter typical efficiency is up to 75%. 1:1 Input Range Low cost 1W Converter Efficiency up to 75% Operating Temperature Range -40°C to +85°C