The performance of a PCB circuit board is directly related to the specific amount of visible and invisible residue between pads and holes on all areas of the active circuit.
In a humid environment, ionic contamination can cause many problems, such as short circuits between conductors caused by the growth of crystals, or direct corrosion of conductors to reduce the surface resistance of the product. For circuit boards, monitoring the level of particle contamination is particularly important to ensure product reliability.
The main pollutants that may be exposed to in the production of integrated circuits are: particulate impurities, inorganic ions, organic substances, microorganisms and gas impurities. In a broad sense, unsuitable temperature, humidity, illuminance, excessive electrostatic and electromagnetic noise, air noise and micro-vibration are also special pollutants.
Cleanliness has received more and more attention in the mechanical industry and the microelectronics industry. For the cleanliness of particulate matter, the commonly used detection methods are: weighing method, particle size quantitative method.
Weighing method + particle size quantitative measurement
JC767 Component Cleanliness Cabinet, JS100 Technical Cleanliness Inspection System.