When I look at a normal diode graph like that I see the Vz Zener voltage of it looks just like a Zener, so why not using it reverse biased like a Zener? I ask like that because I never saw it being used this way and I've been searching for days.
For example: using a 1N4001 like a 50V Zener , or a 1N4007 as a 1kV Zener to cut/shunt any voltage above that.
ps: i said too much the word Zener but actually its the varistor aplication that im considering. and actualy a varistor is like kind of diode like as it haves many soup like diode junctions in it. -metaforical compare: think of a diode and a varistor like crystal and glass.