Rectifier ratings and recovery profile
The 1N6627 is a standard fast recovery rectifier rated for 440 V DC reverse voltage and 1.75 A average forward current, with a 30 ns reverse recovery time that places it in the Fast Recovery class (≤500 ns, >200 mA). Forward voltage drop is 1.35 V maximum at 2 A, and reverse leakage is 2 µA at the rated 440 V — both figures measured at 25°C junction.
Capacitance and snubbing considerations
The 40 pF capacitance at 10 V reverse bias and 1 MHz gives a rough estimate of the stored charge that must be swept during turn-off — relevant for snubber design in high-frequency rectifier stages where the 30 ns trr is the primary switching loss component.