A solder paste inspection machine (SPI machine) measures the height, volume, and area on paste deposits. It also computes stencil offsets and finds defects in your PCBs. These machines are able to measure small items accurately, which is critical to early detection of a defect within the PCB.

Why Is SPI Important?

When you are able to use an SPI machine to detect any possible defects in the solder paste application, you can catch mistakes early on in the project. This allows for changes before your PCB is mass produced. The machine needs to measure accurately not only the length and width, but also the height, volume, and area of the solder paste.

This machine can catch defects early in the process, and it can save time and money. The solder paste must be applied consistently and accurately, and it is critical to detect any problems as soon as possible. Having the ability to measure the three dimensional aspects of the solder paste on the PCB allows you to find these issues early on so that you can make necessary changes to improve functionality of the PCB, which will reduce your reworks and improve your profits.