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The general term for holes placed on a PCB or a panel of PCBs for registration and hold-down purposes during the manufacturing process. Also known as Fabrication Hole, Pilot Hole, or Manufacturing Hole.

PCB Glossary

  • FR3

    A paper material that is similar to FR-2 except that an epoxy resin is used instead of phenolic resin as a binder. Used mainly in Europe. MCL does not offer FR3.