>=20
>=20
> FWIW, every caustic-soda PCB chemistry I have ever used calls=20
> for room-temperature development.  Warmer water is generally=20
> a bad plan.  If you're already using the recommended=20
> dilution, try adjusting the temperature first.  45 to 90=20
> seconds seems to be a "typical" baseline from my experience.
>=20

I believe you, but my experience is different.  I tried it a few
different ways today, and got the "crispest" definition of the small
SSOP traces with warm (prob 90-100ish) water and a developing time of 5
seconds or so.  I tried it with cooler water and longer developing
times, but I didn't get good results.

In any case, I think I am going to go to SOIC.  SSOP parts seem to
multiply the effort (both in developing/etching and baking) by a factor
of 4.  By comparison, SOIC is trivial to develo/etch/bake/solder. It is
just not worth it for a small size savings.

Alex

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