8 A, 1000 V fast recovery in a D2PAK — what the ratings mean for your PFC or SMPS output stage
The STTH810G-TR is a general-purpose fast-recovery epitaxial diode from STMicroelectronics, rated for 8 A average rectified current at 1000 V reverse voltage. The 85 ns reverse recovery time places it in the fast-recovery class (≤500 ns, >200 mA), making it suitable for hard-switching topologies where recovery charge and switching losses matter — think power-factor-correction boost stages or the output rectifier in a 1 kW-class SMPS.
Junction temperature and forward drop — the thermal budget drivers
The maximum junction temperature is 175°C, which is the standard for ST's high-voltage ultrafast family; this gives headroom in a cramped PFC stage where the diode sees both conduction and switching losses. Reverse leakage is 5 µA at 1000 V, a figure that doubles with every 10°C rise but remains manageable below 125°C.
Package and board-fit — D2PAK with a tab for thermal management
Available in tape-and-reel or cut-tape quantities — the reel format suits automated pick-and-place for medium-to-high volume builds.
No PCN or obsolescence date has been published for this base product number (STTH810) as of the latest records.