400V Rectifiers for Efficient Power Conversion in Satellites

The STT60400HR from STMicroelectronics is a 60A, 400V fast-recovery rectifier developed primarily to support the needs of the electric propulsion and power control and distribution units of next-generation satellites. Using ST's latest planar technology, it features a low forward drop of 1.35V (VF) to reduce power losses. The STT60400HR comes in a hermetic ceramic SMD1 package. Engineering models and radiation reports are available upon request.

Features and specifications include: Very small conduction losses; Negligible switching losses; High surge current capability of 500A; 250ns forward recovery time; 1400nC reverse recovery charge; Qrr of 0.3; maximum junction temperature of 175 degrees C; Hermetic package; TID and SEE tested; Package mass of 3 g; ESCC qualification is in progress.

The STTH60400 is assembled in an SMD1 hermetic package and tested in total dose at high dose rate and in Single Event Effect to be used in aerospace applications. It is intended to get ESCC qualified. The complete ESCC specification for this device is available from the European space agency web site. ST guarantees full compliance of qualified parts with such ESCC detailed specifications.