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24:29 1996 |
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HEY DOC!
For better component placement, the PCB design group moved the mechanical
screw mounting holes that control the Z-forces from the compression
connector to the edge of the board. Now, the assembled board bows across
the mounting area, leading people to believe that there could be a
component solder stress problem.
The only specification found for assembled boards was the Bow and Twist
ANSI/J-STD-001 9.2.3 of 0.75% for SMT Boards. Does anyone know of a solder
joint or an assembled component stress guideline, other than the J-STD-001
Bow and Twist Specification?
See ya.
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