The STMicroelectronics STTH8R06G-TR is a 600 V, 8 A ultrafast rectifier in a D2PAK (TO-263) surface-mount package. Its 45 ns reverse recovery time places it in the fast-recovery class for switching power supplies, power factor correction (PFC) stages, and output rectification in DC-DC converters. The 175°C maximum junction temperature gives thermal margin in compact layouts where heatsinking is limited. This is an active-production, ROHS3-compliant part suited for industrial power supplies, telecom rectifiers, and high-frequency inverter stages.
45 ns trr — switching loss anchor for PFC and high-frequency rectification
The 45 ns reverse recovery time is the rating that determines the part's role. In a continuous-conduction-mode (CCM) PFC boost stage, a slow diode would cause excessive reverse-recovery current spikes that increase switching losses and EMI.
D2PAK surface-mount — board-level footprint and thermal path
The D2PAK (TO-263) package is a standard high-power SMD footprint. The tab is the anode connection and provides the primary thermal path to the PCB. For 8 A continuous conduction, a copper pad on the board is expected — the package assumes the PCB copper acts as the heatsink. Reflow assembly is standard. The tape-and-reel variant (TR suffix) feeds directly into pick-and-place lines.
Forward drop and thermal limits — derating in practice
At 8 A the forward drop is specified at 2.9 V maximum. The 175°C junction rating means the part can tolerate brief overloads or high ambient temperatures.
The STTH8R06G-TR has an active product status from STMicroelectronics. ROHS3 compliance is current.