PCB Tech - PCB ultrasonic cleaner

PCB ultrasonic cleaner are highly effective cleaning tools that can remove dirt, dust, and other contaminants from circuit boards and other sensitive electronic components. The high-frequency sound waves produced by the ultrasonic transducer create cavitation bubbles that loosen surface dirt. As a result, ultrasonic cleaners can quickly and easily remove stubborn flux, as well as solder paste and other contaminants. And, because ultrasonic cleaners do not rely on harsh chemicals or abrasives, they are gentle on delicate electronic devices. Pollution and residues are inevitable when circuit boards are manufactured, including flux residues, solder paste residues, adhesive residues, dust, fingerprints, solvents, oxides, etc., which can cause circuit boards to malfunction or fail. Therefore, cleaning circuit boards is very critical.

When using PCB ultrasonic cleaner, try to avoid using excessive heat or certain solvents, as these can damage sensitive electronic components. In addition, you should use distilled or deionized water in an ultrasonic cleaner to avoid conductive ions affecting the function of the circuit board. Ultrasonic cleaning machines are a common method for cleaning electronic components and printed circuit boards (PCBs). It uses high-frequency waves (usually around 40kHz) to agitate the cleaning fluid, forcing contaminants to be removed. There are many common methods for cleaning PC, PCB, and PCBA circuit boards. Use ultrasonic waves to clean the circuit board. This method can effectively remove dust, grease, and other contaminants from the circuit board while avoiding damage to the circuit board.

PCB ultrasonic cleaner 

PCB ultrasonic cleaner is mainly used to clean organic and inorganic pollutants such as rosin flux, water-soluble flux, and no-clean flux remaining on the surface of SMT/THT PCBA after soldering. Simply put, PCBA circuit board cleaning is a process of dissolving and removing solder residues. The purpose of PCBA circuit board cleaning is to ensure good surface resistance and prevent leakage, thereby essentially extending the service life of the product. In the process of SMT patch processing and production, solder paste and flux will produce residual substances during PCBA circuit board processing and soldering. The residues contain various components: organic acids and decomposable ions, etc. Among them, organic acids are more corrosive. Ions remaining on the pads will cause short circuits. Moreover, these residues are relatively dirty on the PCBA board and do not meet the customer's requirements for product cleanliness. Therefore, it is essential for us to clean the PCBA circuit board.

In the entire PCB production process, cleaning operations are required at different stages, and PCB ultrasonic cleaning machines play an important role in each link: (1) Using the cavitation effect and microflow of ultrasound to completely remove pollutants on the hole wall, ensure the hole wall is clean, and provide a good foundation for the subsequent electroplating process. (2) Remove the oxide layer, oil and other pollutants on the PCB surface, so that the PCB surface presents a clean and fresh metal surface, thereby improving the electroplating effect and reducing the occurrence of plating defects. (3) Effectively remove flux residues, especially in complex solder joints and component pins. Through the effect of ultrasound, the residual flux is completely removed to ensure the stable and reliable electrical performance of the PCB.

PCB ultrasonic cleaner machines are also constantly innovating and developing with the continuous development of electronic manufacturing technology.

(1) Intelligent development: Future PCB ultrasonic cleaning machines will be more intelligent, with functions such as automatic detection, fault diagnosis, and remote monitoring.

(2) Environmental protection and energy saving: With the increasing awareness of environmental protection, PCB ultrasonic cleaning machines will develop in a more environmentally friendly and energy-saving direction. Adopt new transducer technology to improve the conversion efficiency of ultrasonic waves and reduce energy waste.

(3) Adapt to new PCB materials and processes: With the continuous emergence of new PCB materials and processes, such as flexible PCBs and rigid-flex PCBs, PCB ultrasonic cleaning machines need to be continuously improved and innovated to adapt to the cleaning needs of these new materials and processes.

In summary, PCB ultrasonic cleaner plays a vital role in the electronics manufacturing industry. From its unique working principle, to the control of key technical parameters, to its application in different production links, and daily maintenance and care, every link is closely connected. With the continuous advancement of technology, PCB ultrasonic cleaner will continue to develop in the direction of intelligence, environmental protection and energy saving, and adapt to new materials and processes, providing strong support for the continuous innovation and high-quality development of the electronics manufacturing in