manufacturing standards

Chapter 5: Mechanical Dimensions and Conductor Inspection of Printed Circuit Boards

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Chapter 5: Mechanical Dimensions and Conductor Inspection of Printed Circuit Boards

The mechanical dimensions and surface conductors of printed circuit boards directly reflect the CNC processing and wet process capabilities of the PCB production line. This is a mandatory inspection item for finished PCBs, commonly used testing instruments include Automatic Optical Inspection (AOI) and Coordinate Measuring Machines (CMM). Figure 1 Mechanical dimensions and conductors of PCBs … Read more

From Layer Stacking to Signal Integrity: Key Principles of PCB Multilayer Design for Beginners

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From Layer Stacking to Signal Integrity: Key Principles of PCB Multilayer Design for Beginners

In the production of high multilayer PCBs, the drilling process directly determines the yield and reliability of the product. Industry data shows that the scrap rate of PCBs due to unreasonable hole diameter design can be as high as 30%, with poor hole processing in high multilayer boards accounting for over 45%. This article strictly … Read more