I used 1N5818 in my N8 (Jameco #177957). Its package a bit big, but it
is still possible to fit it on the board (that has 7.62 mm / 0.3"
distance between holes).
As I understand the diode is there to discharge the C3 capacitor as
quickly as possible when power is removed (reportedly applying voltage
to an IC pin without applying power to that IC can damage it).
Schottky diodes are fast and have low voltage drop, so they will
discharge capacitors quickly and to a lower voltage, but IMHO regular
silicon diode such as 1N4148 will work too. That's what I use for my
N8VEM SBCs and Zeta, that have the reset circuit similar to N8.
Thanks,
Sergey
On Jul 9, 12:45 pm, Paul Birkel <pbi...@gmail.com> wrote:
> Agree; about 35% chubbier (:->), but it seems like the critical
> dimension would be the length for lead-bending. All of the PCBs that
> I've checked seem to be using a standard ~7.5-8.0 mm hole-to-hole
> distance, the same as for the resistors.
>
> The N8 is pretty specific about using Schottky diodes.
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