Circuit board protective clothing – the key role of three-proof coating in PCB circuit boards
In the electronics industry, the application of conformal coatings plays a pivotal role. As a solid line of defense for circuit boards, it provides a vital guarantee for the stable operation of equipment. Especially in those occasions that need to withstand various extreme environmental tests, such as precision metering devices and electric vehicle charging piles, the protective effect of conformal coatings is indispensable. It can not only effectively resist the erosion of environmental factors such as moisture, salt spray, corrosive gases and dust, but also significantly improve the insulation performance and weather resistance of circuit boards, ensuring that the equipment can maintain excellent performance and reliability in various complex environments. Therefore, when designing and manufacturing these key equipment, the rational selection and application of conformal coatings has become an industry consensus and standard practice.
What is conformal coating?
Conformal coating is a specially formulated coating used to protect circuit boards and related equipment from environmental erosion. Conformal coating has good high and low temperature resistance; after curing, it forms a transparent protective film with excellent insulation, moisture-proof, anti-leakage, shock-proof, dust-proof, anti-corrosion, anti-aging, and corona resistance properties.
Why do we need to carry out three-proof treatment?
PCB is a complex electronic component that is often used in circuit boards for high-intensity applications, such as aviation, military industry, control systems, etc. However, the surface of PCB boards is often attacked by some external factors, such as water, oxidation, corrosion, etc. These factors will affect the electrical performance of PCB boards, causing problems such as circuit short circuits, and even causing the entire circuit board to fail.
For example, in the industrial field, PCB boards are often in harsh working environments, such as high temperature, high humidity, corrosive gases, etc. These conditions can have fatal effects and cause the circuit board to not work properly. Therefore, the three-proof treatment is to prevent the influence of these external factors, protect the circuit board, and extend the service life of the circuit board.
The triple-proofing treatment can prevent the PCB board from damage caused by external factors, improve the durability and stability of the PCB board, and also improve the mechanical strength, wear resistance and other properties of the circuit board, thereby improving the reliability and stability of the entire system.
Advantages of PCB circuit board brush three-proof
Prevent moisture penetration: In a humid environment, PCB boards are easily penetrated by moisture, which can lead to circuit board failure. Applying conformal coating can effectively prevent moisture penetration and protect the circuit board.
Prevent oxidation: PCB board will form an oxide layer due to oxidation, which will further lead to problems such as circuit short circuit and poor contact. Applying conformal coating can effectively prevent PCB board from being oxidized and ensure the normal operation of the circuit board.
Prevent corrosion: In some harsh environments, PCB boards are susceptible to corrosion, which can damage the performance of the board. Applying conformal coating can effectively prevent corrosion of PCB boards and protect the circuit board.
Improve mechanical strength: Applying conformal coating can also improve the mechanical strength and wear resistance of the PCB board, thereby improving the reliability and stability of the entire system.
Protect circuit boards from pollution and UV radiation: PCBs are susceptible to pollution and UV radiation during manufacturing and use, which can cause damage or failure of components on the circuit board. By applying conformal coating, circuit boards can be effectively protected from pollution and UV radiation, keeping the circuit in normal working condition.
Improve the aesthetics of the circuit board: The surface of the PCB after the three-conformal paint is smooth and flat, and the color is uniform, which improves the aesthetics of the circuit board. In addition, the three-conformal paint also has a certain dust-proof effect, which can reduce the impact of dust on the circuit board.
The difference between PCB circuit boards with and without conformal coating
There are crucial performance differences between PCB circuit boards with and without conformal coating, mainly in terms of weather resistance, corrosion resistance and overall reliability. PCB circuit boards coated with conformal coating are like putting on a solid protective coat for the circuit, effectively resisting the invasion of moisture, dust and various chemical corrosive substances. This layer of protection not only enhances the stability of the circuit board in extreme environments, but also greatly improves its long-term reliability, thereby extending the service life of the product and significantly reducing subsequent maintenance costs.
Jiansiyan Technology is well aware of the importance of this technology. Therefore, we use advanced conformal coating technology in our key products such as metering modules and charging piles. This measure ensures that our PCB circuit boards can withstand the challenges of various harsh environments, whether it is a damp basement, a dusty industrial site, or a special environment with the risk of chemical corrosion, it can maintain excellent performance. Therefore, users can deploy our motherboard products in various application scenarios with greater peace of mind, and enjoy longer-term stable operation and lower maintenance burden.
(Photo: The display of three-proof PCB circuit boards in various fields of Jiansiyan Technology directly demonstrates the excellent protection performance and wide application potential of our products.)
How to identify whether the PCB circuit board is coated with conformal coating?
1. Visual inspection: The appearance of the three-conformal coating is usually a white transparent thin layer, evenly covering the surface of the circuit board. Compared with the circuit board without three-conformal coating, it has higher gloss under natural light.
2. Touch inspection: The surface of the motherboard coated with conformal coating feels smoother.
3. Ultraviolet inspection: Use ultraviolet light to illuminate the charging pile motherboard, and the charging pile motherboard with triple-conformal paint will show a fluorescent reaction.
4. Professional testing: Through professional waterproof, moisture-proof, salt spray, aging resistance and other tests, to determine whether the motherboard is coated with three-proof paint.
About JSY-MK
Shenzhen Jiansiyan Technologies Co., Ltd. is a national high-tech enterprise specializing in the research and development of "electric measurement", "electric transmission" and "electric control" technologies. It is located in the high-tech innovation frontier area - Shenzhen Guangming New District. The company was established in 2009 and obtained the "National High-tech Enterprise Certification", "Software Enterprise Certification" and "3A" enterprise certification issued by the Ministry of Commerce in 2014. Since its establishment, the company has accumulated 130 products in eight categories; involving charging piles and management systems, embedded power metering modules, electrical measuring instruments, meters, smart PDUs, fire alarms, fire fan control, energy consumption analysis, phase-by-phase power metering and other fields. The main partners are leading companies in the industry and listed companies.
At the same time, Shenzhen Jiansiyan Technology Co., Ltd. has a deep accumulation in the PCB industry. We provide high-quality, short-delivery, cost-effective one-stop services, including media community, component procurement, SMT processing and DIP processing, etc. We have a dedicated service team to respond to your needs at any time. Looking forward to creating a better future with you!
