While searching for a part for work, I worked through the rectifiers section
of the Farnell (Premier) catalogue. Philips, in particular seem to have
quite a range of 4-8A diodes with 1kV+ rating, at $1-2 prices.
One that really caught my eye was the IR 10ETS16 - 10A average forward
current, 1600V PIV, price about $3. Not the cheapest, but 4 or 5 per leg
should handle anything a normal mortal can throw at it. Also interesting is
the 20ETS16, which is the same but 20A rating for about 10% more money.
One side benefit - it's branded product so you can look at the specs and
decide on voltage sharing strategy with confidence.
Steve
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