Hello DigiKey Community.
Half-pak diodes are hooked up from top to bottom. The mounting screws at the side may or may not be connected to the base.
In the case of part number 112-VS-125NQ015PBF-ND.
In this case the mounting screws are not isolated from the base.
Please go through each datasheet of the diodes to see were the anode and cathode is located and if the mounting screws are isolated.