Definition
Internal Cavity PCBs require an intentional void among internal layers so that a specific area is not in contact with prepreg.
Applications
Applications that require portion of inner layer to be open for component assembly and air retention span a wide range of industries:
- Microwave
- Military
- Telecommunications
- Natural Gas Detection
Fabrication Issues
We have resolved the following fabrication issues for internal cavities:
- Registration
- Bleed out of bonding material into cavity
- Shallow cavity routing
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Sample Boards
