Precision dispensing is a high-precision, programmable, non-contact or contact fluid-controlled coating technology developed in modern electronics manufacturing to meet the protection requirements of high reliability, miniaturization, and complex PCBAs. It marks a new stage in conformal coating, moving from “surface coverage” to “microstructure-customized protection.”
Application Case: Precision Conformal Coating of On-Board Charger (OBC) Control Board for New Energy Vehicles
1.Background and Challenges
● Product:Main control board of an on-board charger (OBC) for new energy vehicles.
● Operating Environment: Faces high humidity, condensation, drastic temperature cycling (-40°C to above 85°C), slight vibration, and potential corrosion from electrolytes and coolants.
● Traditional Process:PCBA Conformal coating polyurethane or silicone materials) is applied using traditional selective coating machines or manual
spraying.
Conclusion: In this case, precision dispensing technology elevates conformal coating from a crude “overall coverage” process to a precise “on-demand” protection strategy. By precisely controlling the position and shape of the material at the microscopic level, it fundamentally solves the inherent defects of traditional spraying. It is particularly suitable for modern PCBA products with high density, high reliability, and irregular structures, and is one of the key processes for achieving product differentiation and higher reliability standards.
Second Intelligent has played an important role in theresearch, development, manufacturing, pre-sales and after-sales services of fluid dispensing robot, potting and coating solutions which range from various types of automatic fluid dispensing, potting, two-component potting machines and coating machines with desktop, free-standing, inline or cobot combined systems, and widely used in global electrical, electronics, home appliances, automobile, telecom, pharmaceutical, automotive electronics, semiconductor, aerospace, LED and more.
https://secondintelligent.com/industry-news/application-of-precision-dispensing-in-pcba-conformal-coating-process/
Comments (0)