タグ: AOI

AOI vs. X-Ray Inspection: Which Defects Does Each Catch?

A BGA sits on a medical control board with 400 balls hidden under the body. The AOI vs X-ray inspection question stops being academic the moment a line operator waves the board past the optical camera and it passes — while a 22% void sits inside ball 137, invisible to any lens. We have watched that exact escape reach a customer only once, and it cost a recall. This guide explains, defect by defect, what each method actually sees so you can spec the right coverage before it matters. Engineer’s Note: Treat AOI as proof the board looks right, not that it is right. A clean optical pass says nothing […]

Automated Optical Inspection: Ensuring PCB Manufacturing Quality

Modern electronic devices demand smaller sizes, faster speeds, and greater functionality. Consequently, printed circuit board complexity has increased dramatically. Dense layouts with fine-pitch packages and thousands of solder joints make manual inspection inefficient and unreliable. Therefore, manufacturers rely on Automated Optical Inspection to guarantee production quality. This technology serves as a critical checkpoint in both fabrication and assembly processes. What Is Automated Optical Inspection? Automated Optical Inspection is a machine-based visual inspection method. High-resolution cameras, controlled lighting, and image processing software scan PCBs to detect defects automatically. The system captures board images and compares them against reference data like CAD files or golden boards. Any deviation signals potential manufacturing issues. This technology applies […]