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pcb hole size tolerance

Standard PCB Sizes: What to Know From an Assembly Perspective

If you work with a reputable and experienced manufacturer, you’ll have access to a broader range of standard PCB sizes than 1.57 mm. If you need a customized board thickness with precisely controlled laminate thickness for controlled impedance, a reputable manufacturer can give you access to a range of laminate options for your custom stackup.

pcb footprint creation guidelines

Factors that Impact the Shelf Life of Printed Circuit Boards

Some materials and components will more stringent shelf-life specifications than others. If those specifications aren’t followed, it could result in a lot of problems with the production of the board. Here is some more information on the shelf life of printed circuit boards as well as their building materials and components, and how your contract manufacturer should be working with them.