ivp wrote:
> So I'm still none the wiser, unless it's perhaps something to do with
> reverse voltage/current capability, which appears to me so far to be
> generally less for Schottky than for silicon

Schottky advantages over "silicon" diodes:

  - Low forward voltage drop

  - Fast reverse recovery

Disadvantages:

  - Higher reverse leakage, especially at high temperature.  Sometimes
    *much* higher leakage than equivalent silicon diode.

  - Unavailable or very expensive at high reverse voltage ratings.

These advantages and disadvantages are not to hard to understand from the
basic physics of P-N diodes versus Schottky diodes.


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