Some of the application notes (AVR40, AN2519) discuss the use of a diode for input protection of the reset pin. Whether such a diode is necessary or not has been discussed extensively on this forum and elsewhere. But what I've been unable to find is what kind of diode should be used.
I'm sure it's obvious to folks with more electronics experience, but I'm a newbie. Saying "oh just use any jellybean diode" means nothing to me. So, what diodes are appropriate here? Both in PTH and SMD configurations.