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| Here
are some design tips you can follow to save $ on your order! |
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| Number
of Layers: |
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Limit the number
of layers as much as possible |
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| Small
hole size: |
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Try to use hole
sizes larger than .025. Smaller drill sizes limit stack drilling greatly
increase machine time. Smaller drills break more often and copper
plating becomes more difficult. |
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| Annular
Ring: |
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Try to provide
pads that are .015 larger than hole size. Planned annular ring of
.010 is good design criteria. Allowances must be made for etching,
lamination, drill position, front to back layer registration and film
stability. Smaller annular ring increases manufacturing difficulty
which result in higher cost. |
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| Hole
Tolerances: |
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If possible,
specify hole size tolerances minimum or larger than +/-.003. Drilling
and copper plating is a very critical step in manufacturing circuit
boards. Tight tolerances just increase problems and lower yields.
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| Line
width and spacing: |
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Manufacturing
cost increases significantly when line width and spacing drop below
10 mil, so you should avoid them if your application does not require
such fine line and space. |
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| Internal
cut-outs: |
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Avoid these if
at all possible. These and very large holes require special routing.
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| Panel
Layout: |
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If you can be
flexible with your panelized PCB panel size, consult your PCB vendor
to discuss the size. This will allow the manufacturer to arrange the
maximum number of boards on their standard panel size. This may have
a major impact on cost especially in production quantities. |
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