The 850 mV forward drop at 20 A (per diode) is a reasonable trade-off for the speed.
This part carries an official obsolete status. WeEn (formerly NXP/Philips discrete) no longer manufactures the BYV52PI-200RG. No direct factory replacement has been published under the BYV52PI base number; a functional replacement would need to match the 200 V / 30 A / 50 ns trr / common-cathode TOP-3I footprint.
Package and thermal interface — TOP-3I
The common-cathode configuration means both diodes share the same cathode connection through the tab, simplifying the heatsink wiring in a centre-tapped rectifier or PFC layout.
