Jim,

Both your normal 250F bake and their 275F bake are Band-Aids to the bareboard
manufacturers process problems.

From a hands-on prospective, I have not pre-baked in over 5 years for both
reflow and wave solder.  I've baked boards with known problems (per other boards
in manufactures datecode & lot), and still delaminated - even at their
prescribed 275F bake.

Eliminate your bake - you'll: reduce standard hours and cycle time, reduce
missing / loose parts (less handling); improve solderability, and improve
reliability (for any heat-sensitive components).

If all else fails, sing "Bad Boards, Bad Boards, what you gonna due . . " to the
"Bad Boys, Bad Boys" theme from "COPS".

Good luck,

Al

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