The STTH110RL from STMicroelectronics is a standard fast-recovery rectifier diode rated for 1000 V reverse voltage and 1 A average forward current, housed in a DO-41 axial-lead package. Its 75 ns reverse recovery time places it firmly in the fast-recovery class, suited for high-voltage switching supplies, power-factor-correction boost stages, and snubber networks where recovery charge and switching losses matter. The junction is rated to 175 °C maximum, giving thermal headroom in compact layouts.
Listed as Active by STMicroelectronics with ROHS3 compliance. For a BOM freeze or a production run, this is a low-risk line item — no imminent obsolescence to watch.