Efficient Ways to Assess PCB Board Quality without Testing Tools
When evaluating a PCB board’s quality without access to specialized testing tools, there are visual inspection methods you can use. Here’s a simple guide to help you quickly determine the quality of a PCB board:
- Dimensions and Thickness:
- Make sure the dimensions and thickness match the specified measurements without any deviations.
- Surface Inspection:
- Check for defects, deformations, scratches, open circuits, oxidation, discoloration, etching marks, and impurities on the circuit board surface.
- Ink Covering Layer:
- Inspect the ink covering layer for uniformity, brightness, and absence of defects.
- Screen Printing:
- Verify the clarity and accuracy of signs and letters in screen printing.
- Carbon Film Examination:
- Examine the carbon film for any defects or printing issues.
- Bottom Plate Evaluation:
- Check the PCB bottom plate for proper forming and any structural issues.
- Edge Smoothness:
- Ensure the edges of the PCB are smooth and symmetrical, especially in V-shaped cutting processes.
By carefully inspecting these key areas, you can effectively evaluate the quality of a PCB board without the need for specialized testing tools.