Ultrasonic Spray Fluxing for PCBs

Ultrasonic spray fluxing is widely used in printed circuit board (PCB) assembly. This technology establishes high-precision coating standards, enabling the formation of clean solder joints and optimized wetting on pads, while reducing flux consumption by up to 90%. These solutions are extensively deployed globally for wave soldering and selective soldering applications and have been adopted by numerous leading equipment manufacturers.

Leveraging mature ultrasonic spray technology, these coating systems offer exceptional precision and process repeatability. Ultrasonic nozzle atomization ensures uniform flux application on circuit boards and electronic components, precisely controlling coating thickness and significantly reducing overspray, all while eliminating the maintenance issues associated with nozzle clogging. The result is clean component surfaces, minimal flux residue, and robust, reliable solder joints. This process optimizes wetting and solder formation, playing a critical role in ensuring soldering stability for advanced PCB materials and precision circuitry.

Wave Soldering Fluxing
Proven in high-volume industrial production, this solution integrates seamlessly into mass-production lines. It delivers uniform, stable flux coverage, optimizes top-side wetting quality, and significantly reduces flux consumption. The process creates an ultra-thin, uniform coating and maintains excellent repeatability during prolonged, continuous production.

Selective Soldering Fluxing
Specifically developed for selective soldering equipment, this solution enables precise, localized flux deposition. Unlike high-pressure jetting, ultrasonic spraying prevents flux spatter, resulting in a smooth, uniform coating; it is resistant to clogging even when using high-solids rosin or OA fluxes. High-precision coating enhances solder joint reliability and reduces rework rates, meeting the demands of increasingly complex PCB assemblies.

OEM-Integrated Fluxing Solutions
Ultrasonic spray fluxing technology has been integrated by numerous leading global wave soldering equipment manufacturers, becoming a standard feature on many high-end soldering systems. The integrated design ensures smooth control and long-term operational stability of the flux coating process on large-scale PCB production lines, consistently maintaining spraying precision.

This flux spraying solution has earned recognition from numerous electronics manufacturers worldwide, driving continuous innovation in flux application processes while delivering superior soldering results, significant production cost savings, and reliable, long-lasting performance. The underlying technology can also be extended to applications involving next-generation low-viscosity conformal coatings and other thin-film coating scenarios, meeting requirements for high precision, high repeatability, and high material utilization.

About Cheersonic

Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.

Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.

If you have any technical questions, customization demands, or procurement inquiries about ultrasonic atomization nozzles, feel free to contact our professional sales and technical team for detailed parameters, customized solutions, and industry application support.
Email: market2@cheersonic.com