The STTH1L06UFY is an automotive-grade fast-recovery rectifier from STMicroelectronics, rated at 600 V reverse voltage and 1 A average forward current. Its 60 ns reverse recovery time (trr) suits hard-switching topologies like PFC boost stages and output rectification. The AEC-Q101 qualification and 175 °C maximum junction temperature target under-hood automotive electronics.
Package and mounting — SMBflat for tight z-height
The SMBflat package is a low-profile surface-mount body, thinner than a standard SMB. It suits sealed ECU housings where board-to-lid clearance is tight. The flat leads are hand-solderable with reasonable care — a fine-tip iron and flux work, though reflow is the production method.
It is not in a last-time-buy or NRND phase, so it remains a valid choice for new automotive designs. For volume production, the base product number STTH1 covers a family of 1 A fast-recovery diodes in various packages and voltage ratings — the SMBflat variant is the one to specify when board height is the constraint.