All orders must be accompanied by detailed files and/or drawings.

NOTE: Before we begin, it is important for us to have your complete drawing information on DXF/DWG/GBR/PCB/PDF format. Please make sure that your information is correct and current. All drawings and revision numbers must match so we can have a seamless transition from quoting to manufacturing.

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.

  1. Via hole for PCB (plated and non-plated through), Minimum .005"
  2. Via hole for metal-back (plated and non-plated through), Minimum .010"
  3. Via annular ring, Minimum .004"
  4. Via pad to via pad, Minimum spacing .0025"
  5. Pad to trace spacing, Minimum spacing .0025"
  6. Trace width and trace spacing, Minimum spacing .0025"
  7. Board edge to via pad or trace, Minimum spacing .003"
  8. Front to back artwork registration .001"
  9. Routing profile tolerance .002"
  10. Smallest inside radius .010"