Technical Library | 2017-12-07 10:35:50.0
Electronics manufacturers protect their circuit boards with conformal coatings. Conformal coatings serve as a barrier from environmental hazards and internal shorts, tin whiskers, and corrosion at the board level. Within conformal coatings different material chemistries specialize in shielding from an array of hazards and can be applied by multiple methods. The most common method is atomized spray which disperses the material into a fine mist. Alternatively, non-atomized coating controls the materials' dispense shape while maintaining the original liquid form. While some applications demand atomized spray and other scenarios overlap between atomized and non-atomized coating, this paper focuses on the circumstances where materials are ideally suited for non-atomized, selective coating.
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 | 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).
Technical Library | 2021-10-06 17:54:32.0
The corrosion of Nickel-Palladium-Gold (Ni-Pd-Au) finish terminals in humid environments is known to be reduced with the application of a conformal coating such as acrylic. Corrosion has a higher rate of occurrence around the terminal 'knee' of a surface mount component, which may be reduced with the application of conformal coatings. Although radio frequency (RF) plasma processing is generally known to enhance conformity of conformal coating to surfaces through ionic bombardment, the effect on the functionality of assembled printed circuit boards (PCB) is not as well known. The purpose of this study is to assess whether RF plasma processing can enhance the adhesive and coverage qualities of an acrylic conformal coating on PCBs
Technical Library | 2013-10-13 10:22:48.0
There are numerous factors which directly affect the conformal coating process to greater or lesser degrees. Those which have major impacts irrespective of the substrate / PCB and assemblies include choice of coating material and method of application. Whether conformal coating boards by dip, robot, batch spray or brush methods the viscosity of the coating is a critical factor in the overall process control.
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 | 2017-06-01 17:12:08.0
The corrosion of Nickel-Palladium-Gold (Ni-Pd-Au) finish terminals in humid environments is known to be reduced with the application of a conformal coating such as acrylic. Corrosion has a higher rate of occurrence around the terminal ‘knee’ of a surface mount component, which may be reduced with the application of conformal coatings. Although radio frequency (RF) plasma processing is generally known to enhance conformity of conformal coating to surfaces through ionic bombardment, the effect on the functionality of assembled printed circuit boards (PCB) is not as well known. The purpose of this study is to assess whether RF plasma processing can enhance the adhesive and coverage qualities of an acrylic conformal coating on PCBs, specifically on Ni-Pd-Au terminals with a knee, and if plasma processing has an effect on the electrical functionality of components and fully assembled PCB.
Technical Library | 2022-01-26 15:22:33.0
Reliability of conformal coatings used to mitigate tin whisker growth depends on their ability to contain tin whiskers. Two key material properties required to assess the reliability of a polyurethane coating are documented experimentally: adhesion strength and puncture strength. A modified blister test using a predefined blister area is employed to assess the adhesion strength and a puncture test is employed to evaluate the puncture strength of the coating. After measuring the properties at time zero, the coatings are subjected to accelerated testing conditions (high temperature/humidity storage and temperature cycling) and the degradations of the coating properties are documented.
Technical Library | 2013-04-18 16:46:42.0
Conformal coatings are considered a method of providing corrosion protection to electrical assemblies used in high-humidity or harsh environments. They are applied to PCBs for various reasons: to protect from moisture and contamination, to minimize dendritic growth, to provide stress relief, and for insulation resistance. These contribute to more durable handling, enhanced device reliability, and reduced warranty costs. Increased miniaturization of new circuit board designs requires flexible, low stress coating material to protect delicate components and fine-pitch leads. Silicone conformal coatings offer many advantages that address the general trend of ongoing PCBs designs, such as: high flexibility and low modulus to reduce stress on delicate or small components... First published in the 2012 IPC APEX EXPO technical conference proceedings.
Technical Library | 2012-12-26 20:18:50.0
①Single side The basic flexible printed circuit board is used of substrate of single side pcb materials and coated coverlay after finishing printed. ②Double sided That is made of substrates of double sided printed circuit board with double surface coated coverlays after finishing printed. ③Single copper foil with double coverlays Single copper foil coated different coverlays with double surface after finishing printed. ④Air gap Laminating two single printed circuit board together with no glue and bare design to meet high flexibility requirements. ⑤Multilayer That is designed for three and above circuit layers by laminating single side printed circuit board or double sided printed circuit board. ⑥COF IC chips and electronic components are installed on the flexible circuit board directly. ⑦Rigid-Flexible PCB Combined to rigid PCB with supporting and flexible PCB with high flexibility.
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