85 ns reverse recovery — the hard-switching edge
Its 85 ns reverse recovery time places it in the fast-recovery class for hard-switching power stages.
600 V blocking, 20 A per leg — derating for the bus
The 600 V reverse voltage gives headroom for 400 VDC bus rails with typical 20% derating margin. Each diode in the common-cathode pair handles 20 A continuous, so the package delivers 40 A total in a center-tap or interleaved PFC topology. Forward voltage drop is 1.55 V maximum at 15 A per diode — the conduction loss at full load runs about 31 W per leg, which the TO-220 package must sink through a heatsink with adequate thermal interface. Reverse leakage is 15 µA at the 600 V rated blocking voltage, a figure that rises with junction temperature up to the 175°C maximum operating junction temperature. The 85 ns trr is specified at standard test conditions; actual recovery in a hard-switched boost stage depends on the di/dt and the junction temperature at the switching instant.
Obsolete — sourcing through the surplus channel
Buyers should verify stock position; the surplus channel is the only supply path.