Obsolete — sourcing the STTH5R06G-TR for a BOM line
The STTH5R06G-TR from STMicroelectronics is a 600 V, 5 A fast recovery diode in a D2PAK (TO-263) surface-mount package. Its 40 ns reverse recovery time (trr) places it in the ultrafast class, suited for continuous-conduction-mode (CCM) power factor correction (PFC) boost stages, output rectification in high-frequency switch-mode power supplies, and snubber networks where reverse-recovery charge must be minimised to keep switching losses under control.
With a 40 ns trr at rated current, this diode recovers fast enough to pair with a 50–100 kHz hard-switched MOSFET without the reverse-recovery spike adding excessive turn-on loss in the switch. The 2.9 V forward drop at 5 A is higher than an equivalently rated Schottky, but the 600 V reverse blocking means it handles the full PFC bus voltage where a Schottky would avalanche.
Obsolete — no official successor on record
ST lists the STTH5R06G-TR as obsolete. No official replacement part number is published by ST. The D2PAK package and the 40 ns trr / 600 V / 5 A rating define a specific operating point; a cross to a current ST part would need to match the package, voltage class, and recovery speed.