The usability of the PCB circuit board is related to the specific amount of inorganic contamination between the pads and holes on the circuit board. If the PCB is in a humid environment, it will cause a short circuit or corrode the conductor due to crystal growth, resulting in a decrease in the surface impedance of the product. Therefore, for PCB, monitoring whether there are inorganic pollutants on the surface of the circuit board is an important source of support to ensure the reliability of the product.

The main pollutants in the production process of integrated circuits are particulate impurities, inorganic pollutants, and microorganisms, but unsuitable temperature, humidity, luminosity, excessive static electricity, noise, and micro-vibration are also special pollutants.

Leakage or abnormal electrical characteristics of integrated circuits are generally caused by surface scratches, short circuits, disconnections, and peeling of circuit boards. Usually these imaginations are mainly due to particulate impurities, inorganic pollutants, and the number of microorganisms exceeding a certain limit.

At the same time, the reason that affects the quality, production efficiency and yield of integrated circuit products is due to unsuitable temperature, humidity, luminosity, excessive static electricity, and noise, which lead to the processing accuracy and service life of process equipment.

Since the proportion of product failure due to pollution problems during the production of circuit boards will be as high as 60%, the PCB circuit board needs to use specific cleaning equipment to ensure reliable performance of the PCB circuit board. The contact angle measuring instrument can be used to detect the PCB circuit board before and after the cleaning equipment, and determine whether the cleaning equipment has effectively cleaned the product through the angle of the contact angle.

PCB circuit board dedicated contact angle measuring instrument:

When the droplet reaches equilibrium on the surface of the solid, at the three-phase interface of gas, liquid and solid, the angle between the gas-liquid interface and the liquid-solid interface is called the contact angle.

Sindin Contact Angle Measurement Bilateral measurements were used, and the contact angle was averaged to ensure the accuracy of the data.

A contact angle meter is a method for evaluating the degree of cleanliness by analyzing the surface contact angle (water drop angle) of contaminated PCB boards, glass, chips, and other materials.