hep 170 diode question

[Cable Guy]

Used in a Maco 300 2x5 8950s. There are diodes inside that the schematic calls hep 170. What do you replace them with? In this instance, it's used to rectify filament voltage, along with a 220uf 25v cap and 470 ohm resistor. Connected to the driver grids. Spec says they're 1000PIV, 2.5 AMP axial rectifier diode. Is that peak inverse voltage critical here or can I use a 1n5406?

Original diode shorted I think, blowing the stuffing out of the grid bias filter cap.

Fun times.

 

[nomadradio]

The tiny 2.5 Amp 1KV rectifier was a standard 30 or 40 years ago, but I would recommend 1N5408 to replace it. Just stouter. And that 1kV is PIV, peak inverse voltage.

73