LFA AC-DC Converters Cosel LFA AC-DC Converters are compact, lightweight, and wide input rugged PCB type AC-DC converters. Features include small and compact PCB construction, built-in inrush current, overcurrent, and overvoltage protection circuits and universal input (AC85 - 264V). These LFA converters are compatible to worldwide safety standards, including UL, C-UL, TUV standard and CE mark. These components are compatible to various safety standards in major countries.