For testing i made a setup: trafo/diode/1000u cap/load to simulate any ps; tested size and speed of switch-off noise of some diodes like 1Nxxx, BA159, schottky; the applikation was a preamp supply; btw rating of BA159 is: 1A rms, 35A pk, 1000V, cap 18pF, switch-off time 100ns;
alf