This issue of eFlash Spotlight will focus on DC-to-DC converters used in flight hardware.  It will first provide an overview of a work in progress that will eventually be an electronic designer’s and electronic parts engineer’s guide for successful use of these components in flight hardware.  Following that, other projects currently in progress will be discussed that deal with analysis of the issues associated with DC-to-DC converters and documented failures.  Three studies done for the NEPP program and one by the CALCE Center at the University Maryland are profiled.  Finally links for suppliers of space-grade  DC-to-DC converters are provided.