fast diodes

I'm looking for a fast testing jobs diode for min. 400V/5a...Schön it would be, if there is something in Rafat, since I wanted to order anything eh. look the uf5408 and the river mur to 680. BYV29-500, with me very often successful in use, also cooling body suitable for use.
 
Thanks for the reply. at the various BY type is definitely something. where is actually in the data sheet the difference between E.g.
a 1N4007, a UF4007 and a SUF4007? electrical testing equipment