Both
actually :-)
The
board designer makes an SMT stencil layer with apertures for all the SMT
components.
The
designer knows were all the SMT components are, so, while they are designing all
the other
layers, they may as well design a the paste layer.
The
contract manufacturer then reviews that stencil/paste layer and may or may not
make modifications OR
they
may have the stencil house that fabs the stencil make modifications. Such
modifications may
include a reduction or expansion of the aperture size, or, exclusion of
components due to process
constraints.
-Carrie
I would like
your opinion on who would be more suited to
design stencils for SMT PWBs;
the board designer or the
contract-manufacturing engineer.
What do
you do and why?
Donald Kyle C.I.D.+
281-285-7528
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