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All orders must be accompanied by detailed files and/or drawings.
Micro-Chem, Inc. requires a drill chart with finished hole sizes, plated or non-plated, quantities, tolerances and if they are through or blind. We will need the outside perimeter and inside perimeter, (OD or ID) dimensions with tolerances.
- Via hole for PCB (plated and non-plated through), Minimum .005"
- Via hole for metal-back (plated and non-plated through), Minimum .010"
- Via annular ring, Minimum .004"
- Via pad to via pad, Minimum spacing .003"
- Pad to trace spacing, Minimum spacing .003"
- Trace width and trace spacing, Minimum spacing .0025"
- Board edge to via pad or trace, Minimum spacing .003"
- Front to back artwork registration ± .001"
- Routing profile tolerance ± .002"
- Smallest inside radius .010"
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Copyright 2006 [ Micro-Chem, Inc. ] All Rights Reserved