The trend towards miniaturization of electronic components continues unabated. Components are more efficient with the same design and new, smaller designs are ready for the market. The product range rounds from 01005 (0.4 x 0.2 mm) and 008004 (0.25 x 0.125 mm). Thus, these designs come closer and closer to the diameter of a human hair of 0.04 - 0.12 mm.
In addition to the apparent advantages of miniaturization such as space savings, less weight and savings in raw materials, the disadvantages for the EMS service provider are the more precise and thus more expensive production technology.
Without visual aids visual checks are hardly possible!
Disadvantages of microscopy
In recent years, microscopy has proven to be useful in the inspection, quality control and assurance of assembled printed circuit boards. However, the field of vision of these tools depends on the one hand on the chosen magnification factor and on the other hand on the selected positioning of the circuit board under the microscope.
This partial view of the circuit board has the following particular disadvantage:
- Only those components that are in the current field of view can be evaluated (field of view). A consideration of all components of the PCB with identical properties is not possible!
- The Addition of necessary information (Augmented Reality) for qualitative assessment of the presence or processing of all components in the current FoV is made more difficult!
- The targeted finding of components becomes a test of patience and resembles the search for the needle in a haystack!
The microscope for the entire circuit board
The solution to avoid the mentioned disadvantages can only exist in a modified microscope, whose FoV covers the entire PCB - and not just a narrow cut!
Such a microscope for the entire circuit board was developed by us in practical use over many years of work and allows - as of today in 2019 - a resolution of almost 5000 dpi. This corresponds to a dot width of approx. 5 - 6 μm.
See for yourself!
In the following animation you will see excerpts of recordings of the BananaPi-M2Berry Board in different resolutions. All excerpts were taken from recordings that were always made for the entire BananaPi board.
Detail of an LED in direct comparison
Registered users can now download the complete microscopic images of the BananaPI M2Berry Board shown in the examples in the resolutions 1500 dpi, 2600 dpi and 4100 dpi.
If you are not yet registered, you can do so at Registration catch up.