Technical Library | 2020-03-09 10:50:17.0
A customer called the Helpline seeking advice for cleaning no-clean fluxes prior to applying a conformal coating. The customer's assemblies were manufactured with a no-clean rosin based solder paste (ROL0) and were cleaned with an isopropyl alcohol (IPA) wash. After cleaning, a white residue was sometimes found in areas with high paste concentrations and was interfering with the adhesion of the conformal coating (Figure 1). For conformal coatings to adhere properly, the printed circuit board (PCB) surface must be clean of fluxes and other residues. In addition, ionic contamination left by flux residues can lead to corrosion and dendrite growth, two common causes of electronic opens and shorts. Other residues can lead to unwanted impedance and physical interference with moving parts.
Technical Library | 2023-12-01 11:08:12.0
Choosing the Right Model I.C.T SMT Coating Machine In the realm of SMT Coating Machine, I.C.T offers an extensive array of advanced models tailored to diverse production needs. The choice of the right machine significantly influences the efficiency and precision of your conformal coating process. This article will provide an in-depth exploration of I.C.T's PCB conformal coating spray machine models, specifically the I.C.T-T550, I.C.T-T550U, I.C.T-T600, and I.C.T-T650, assisting you in making an informed decision aligned with your specific requirements. I.C.T PCB Conformal Coating Spray Machines Overview I.C.T, renowned for its commitment to innovation, quality, and safety, ensures all models hold CE certification. Let's delve into the key distinctions between these models and the essential factors to consider when selecting the ideal machine for your needs. I.C.T-T550: Precision in Simplicity The I.C.T-T550 SMT Coating Machine model features two critical valves: the atomization valve and the precision valve. If you're interested in exploring a variety of coating valves, simply click here for more information. Ideal for applications where fixed valves suffice, the I.C.T-T550, lacking rotation or tilting capabilities, ensures consistent and reliable results for straightforward conformal coating requirements. I.C.T-T550U: Unleash Flexibility For those requiring more versatility, the I.C.T-T550U SMT Coating Machine model is designed to meet your needs. The addition of a rotating U-axis empowers the valves to rotate a full 360 degrees and tilt up to 35 degrees, enabling precise coating in challenging, intricate areas. The I.C.T-T550U's flexibility makes it an excellent choice for a wide range of applications. I.C.T-T600: Doubling Efficiency Closely resembling the I.C.T-T550 SMT Coating Machine, the I.C.T-T600 boasts a unique feature – equipped with two atomization valves. This dual-valve setup enables simultaneous coating of two PCBs, effectively doubling production efficiency. Ideal for applications prioritizing speed and efficiency, the I.C.T-T600 SMT Coating Machine streamlines the coating process. I.C.T-T650: Versatility Redefined In cases requiring different valves for comprehensive coating, the I.C.T-T650 SMT Coating Machine is the solution. This model features two atomization valves and two precision valves, offering exceptional flexibility for diverse conformal coating applications. The I.C.T-T650 SMT Coating Machine ensures precise and reliable results for even the most complex coating needs. Conclusion: PCB Conformal Coating Spray Machines Selecting the right I.C.T PCB conformal coating spray machine is crucial for enhancing the efficiency and effectiveness of your production process. Consider factors such as the size, complexity, and coating requirements of your PCBAs. Rest assured, I.C.T's unwavering commitment to innovation, quality, and safety guarantees the perfect solution to elevate your conformal coating endeavors. If you need further guidance or wish to tap into the expertise of I.C.T professional engineers for designing a customized coating production line, do not hesitate to reach out. We are here to help you achieve optimal results while meeting European safety standards. If uncertain about whether your product requires a PCB dispensing machine or coating machine, feel free to reach out directly or click here to read our comprehensive guide for further insights: Differences Between Coating & Dispensing.
Technical Library | 2023-11-09 08:53:45.0
Crafting an Efficient SMT Conformal Coating Line for Double-Sided PCBA In the intricate realm of electronics manufacturing, selecting the ideal SMT conformal coating line can seem like a challenging quest. The pursuit of a solution that seamlessly integrates efficiency, reliability, and performance is the ultimate goal. In this article, we embark on a journey to unravel the secrets of a standard SMT conformal coating line, using a captivating visual guide as our compass. The Symphony Of Components In An SMT Conformal Coating Line Picture a finely orchestrated symphony, with each instrument playing a unique role in this PCB coating process. The star performers in this lineup include: Transfer Conveyor: These act as the stage where the PCB's journey begins. Think of them as the entry and exit points for your precious boards, allowing a smooth, choreographed dance through the line. 1st Coating Machine: As the first movement in this musical journey, this machine, partnered with the initial curing station, lays down the foundation – applying adhesive to one side of the PCB. Inspection Conveyor: After the initial curing, our inspectors take center stage, using these transfer stations to carefully evaluate the coating's quality. 1st Curing Oven: This is where the magic happens. The first curing oven solidifies the adhesive applied in the previous act, setting the tone for a flawless performance. Flipper Machine: The flipper machine takes the spotlight, gracefully turning the PCB to reveal its other side, ensuring both faces receive their share of adhesion. 2nd Coating Machine: With a newfound perspective, the second coating machine takes the stage, applying adhesive to the reverse side of the PCB. 2nd Curing Oven: The grand finale! The second curing oven brings our symphony to a breathtaking close, solidifying the adhesive applied in the second act, creating a harmonious, dual-sided masterpiece. Efficiency Meets Dual-Side Coating This SMT conformal coating line is like a well-choreographed ballet that requires at least two dancers. One stands at the front, carefully loading PCBs onto the stage, guiding them through the first act. After the flip, the second dancer carries them through the second act, with both sides perfectly coated, ensuring a flawless performance for applications requiring dual-sided adhesion. UV Curing Oven For Illuminating Results For applications that embrace UV-curable adhesives, our line includes UV curing ovens, adding a layer of brilliance to the process and ensuring an efficient solidification of adhesives. Transfer Stations With A Touch Of Magic Within this symphony, the transfer stations wear a touch of magic – the second and fourth stations feature enchanting blue glass covers illuminated by embedded LED lights. These stations offer operators a clear view of the adhesive quality, allowing for meticulous inspections. The blue glass covers also act as protective shields, guarding freshly coated PCBs from the ever-present dust fairies. Certified Excellence: European Standards And CE Certification Ensuring that our performance meets the highest standards, our entire ensemble adheres to stringent European safety standards and proudly boasts CE certification, a testament to compliance with safety, health, and environmental protection requirements. A Variety Of Coating Machines For Your Unique Needs Our lineup doesn't just feature one star, but an ensemble of coating machines, including models like I.C.T-T550, I.C.T-T550U, I.C.T-T600, and I.C.T-T650. For an encore performance with detailed specifications of each model, please refer to our dedicated article. Additionally, for a captivating exploration of the right coating valve for your adhesive, please visit our comprehensive guide. Single-Sided PCB Coating For those who prefer a single board, our dedicated article on single-sided PCB coating is a spotlight on this specialized process. In the dynamic world of electronics manufacturing, our SMT conformal coating line stands as a versatile and reliable performance. With dual-sided coating capabilities, adherence to European safety standards, and CE certification, we offer a comprehensive platform for your coating needs. Join us in this symphony and explore our range of coating machines and accessories to enhance your conformal coating process. It's a performance that promises to leave you in awe!
Technical Library | 2019-05-23 10:42:00.0
Why identify flux residues? The primary purpose of flux is to reduce species of metal oxides from solderable surfaces, and to act as a mechanism for lifting and removing debris. If the assembly is not properly cleaned after manufacturing, flux may continue to reduce metals and may eventually corrode the assembly. When the assembly is powered, the metal ions may precipitate along electromagnetic field lines and form dendritic shorts. In addition, the presence of residue can alter the insulation properties of a board, affect the adhesion of the conformal coating, or interfere with the moving parts of the assembly. In radio frequency (RF) applications, flux may change the RF properties on the surface of the printed circuit board (PCB) such as the dielectric strength, surface resistance, and Q-resonance.
Technical Library | 2017-11-30 10:29:29.0
Each year the electronics industry is faced with new product designs that call for smaller printed circuit boards (PCBs) to function in more aggressive and rigorous service environments. As demands change, conformal coating is becoming increasingly adopted to ensure PCB reliability in environments where moisture, condensation, dust, dirt, salts, chemicals, abrasion, thermal shock, mechanical shock, and other factors can all affect circuit performance. This guide reviews the benefits of using light-cure conformal coatings as well as cost justification, typical processing guidelines and best practices, product selection criteria, data, and industry specifications.
Technical Library | 2016-10-07 07:28:12.0
In the previous post, we discussed the importance of conformal coatings, materials used for coatings, and methods of application. In this post, we shall look at various conformal coating curing methods, and analyze their immediate benefits.
Technical Library | 2016-06-06 05:25:53.0
One of the most important steps in PCB assembly is the need for conformal coating for PCB. The process of choosing a conformal coating spray is a complex one as it involves a number of confusing decisions revolving around selections and compromises.
Technical Library | 2013-10-13 10:54:13.0
The measurement of the conformal coating thickness on a printed circuit board (PCB) to ensure internal and international standards are met is now a critical factor in conformal coating process control. There are several methods for measurement of conformal coating thickness and they fall into two categories. These categories are wet film measurements applied during coating application and dry film measurements made after the coating is dried enough not to damage the coating.
Technical Library | 2015-08-20 15:51:08.0
Temperature and Humidity on Selective Conformal Coating It is well known that selective conformal coating on printed circuit board (PCB) assemblies provides unparallel protection for PCB’s. Nevertheless, concentrated conditions of humidity, water, and high temperatures can have negative effects on the conformal coating itself causing it to fail and become inapt for its intended purpose. Taking this into consideration, it is prudent to choose the right type of conformal coating that best suits the application and environmental conditions under which an assembly is likely to undergo in use. The proper conformal coating will significantly reduce the likelihood of failure/rejection, saving both valuable time and money for any manufacturing process.
Technical Library | 2007-08-28 20:18:06.0
A conformal coating is defined as a thin polymeric material which covers the surface of an electronic assembly. These coatings are used to provide an electrically insulative and environmentally protective seal or cover to a completed printed circuit board (PCB).
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