Dual common-cathode fast recovery diode for 400 V rails
The 50 ns reverse recovery time qualifies it for continuous-conduction-mode (CCM) power factor correction and output rectification in switch-mode power supplies where recovery losses dominate the thermal budget.
50 ns trr — switching loss anchor
The 50 ns trr is specified at the test conditions typical for fast-recovery diodes in the 400 V class. In a 100 kHz boost PFC stage, the recovery charge per cycle is low enough that the diode can share the heatsink with the MOSFET without exceeding the 175 °C junction limit, provided the forward voltage drop of 1.5 V at 8 A is factored into the conduction loss calculation.
The 175 °C junction rating demands a low-thermal-resistance layout — the tab solder area and via count under the package set the continuous current ceiling, not the 8 A silicon rating alone.