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Evaluation Of The Capability Of Conformal Coatings To Prevent Degradation Of Printed Circuit Assemblies In Harsh Environments
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Book Synopsis Evaluation of the Capability of Conformal Coatings to Prevent Degradation of Printed Circuit Assemblies in Harsh Environments by : Per-Erik Tegehall
Download or read book Evaluation of the Capability of Conformal Coatings to Prevent Degradation of Printed Circuit Assemblies in Harsh Environments written by Per-Erik Tegehall and published by . This book was released on 1993 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Contamination of Electronic Assemblies by : Elissa M. Bumiller
Download or read book Contamination of Electronic Assemblies written by Elissa M. Bumiller and published by CRC Press. This book was released on 2002-11-12 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contamination problems have become a major factor in determining the manufacturability, quality, and reliability of electronic assemblies. Understanding the mechanics and chemistry of contamination has become necessary for improving quality and reliability and reducing costs of electronic assemblies. Designed as a practical guide, Contamination of Electronic Assemblies presents a generalized overview of contamination problems and serves as a problem-solving reference point. It takes a step-by-step approach to identifying contaminants and their effects on electronic products at each level of manufacture. The text is divided into four sections: Laminate Manufacturing, Substrate Fabrication, Printed Wiring Board Assembly, and Conformal Coatings. These sections discuss all aspects of contamination of electronic assemblies, from the manufacture of glass fibers used in the laminates to the complete assembly of the finished product. The authors present detection and control methods that can help you reduce defects during the manufacturing process. With tables, figures, and fishbone diagrams serving as a quick reference, Contamination of Electronic Assemblies will help you familiarize yourself with the origination, detection, measurement, control, and prevention of contamination in electronic assemblies.
Download or read book Proceedings written by and published by . This book was released on 2001 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Printed Circuit Assembler's Guide To... Conformal Coatings for Harsh Environments by : Phil Kinner
Download or read book The Printed Circuit Assembler's Guide To... Conformal Coatings for Harsh Environments written by Phil Kinner and published by . This book was released on 2017-10-23 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Conformal Coatings for Printed Circuit Assemblies by :
Download or read book Conformal Coatings for Printed Circuit Assemblies written by and published by . This book was released on 1963 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final report covers the research and development work done on conformal coatins and is divided into five phases: Phase A - Evaluation of commercially available conformal coatings such as: epoxies, polyurethanes, silicons, acrylics and polystyrene materials, and their ability to meet the requirements specified in PR+C 61-SIMSA482 in order to obtain data for the preparation of a three services coordinated military specification. In this phase is also discussed the effect of coating thickness on insulation resistance and Q factor at 1, 50 and 100 mc under prolonged high humidity conditions. Phase B Investigation of methods for removing the conformal coating to permit replacement of parts when necessary without impairing the functional operations of the unit. Phase C - Evaluation, for upgrading purposes, of the allowable minimum spacing between conductors on uncoated and coated boards. Phase D - Study the effect of conformal coating on copper, gold and solderplated conductors with respect to their effect on Q factor and capacity at 1, 50 and 100 mc. (Author).
Book Synopsis Coating Materials for Electronic Applications by : James J. Licari
Download or read book Coating Materials for Electronic Applications written by James J. Licari and published by William Andrew. This book was released on 2003-06-11 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first book in the Materials and Processes for Electronics Applications series answers questions vital to the successful design and manufacturing of electronic components, modules, and systems such as: - How can one protect electronic assemblies from prolonged high humidity, high temperatures, salt spray or other terrestrial and space environments? - What coating types can be used to protect microelectronics in military, space, automotive, or medical environments? - How can the chemistry of polymers be correlated to desirable physical and electrical properties? - How can a design engineer avoid subsequent potential failures due to corrosion, metal migration, electrical degradation, outgassing? - What are the best processes that manufacturing can use to mask, clean, prepare the surface, dispense the coating, and cure the coating? - What quality assurance and in-process tests can be used to assure reliability? - What government or industry specifications are available? - How can organic coatings be selected to meet OSHA, EPA, and other regulations? Besides a discussion of the traditional roles of coatings for moisture and environmental protection of printed circuit assemblies, this book covers dielectric coatings that provide electrical functions such as the low-dielectric-constant dielectrics used to fabricate multilayer interconnect substrates and high-frequency, high-speed circuits. Materials engineers and chemists will benefit greatly from a chapter on the chemistry and properties of the main types of polymer coatings including: Epoxies, Polyimides, Silicones, Polyurethanes, Parylene, Benzocyclobenzene and many others. For manufacturing personnel, there is an entire chapter of over a dozen processes for masking, cleaning, and surface preparation and a comprehensive review of over 20 processes for the application and curing of coatings including recent extrusion, meniscus, and curtain coating methods used in processing large panels. The pros and cons of each method are given to aid the engineer in selecting the optimum method for his/her application. As a bonus, from his own experience, the author discusses some caveats that will help reduce costs and avoid failures. Finally, the author discusses regulations of OSHA, EPA, and other government agencies which have resulted in formulation changes to meet VOC and toxicity requirements. Tables of numerous military, commercial, industry, and NASA specifications are given to help the engineer select the proper callout.
Book Synopsis Coatings for Harsh Environments by : Shiladitya Paul
Download or read book Coatings for Harsh Environments written by Shiladitya Paul and published by MDPI. This book was released on 2020-11-13 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The operation of numerous components that are critical to safety in industries around the world relies on protective coatings. These coatings often allow process equipment to serve a purpose in environments well beyond the operational limit of the uncoated components. Durability, ease of application, repairability, reliability and long-term performance of such coatings are all key to their application. Therefore, this book, Coatings for Harsh Environments, is devoted to research and review articles on the metallic, non-metallic and composite coatings used in aggressive environments. In particular, the topics of interest include, but are not limited to: coatings for high temperature and molten salt applications; thermal spray and cold spray coatings for aggressive environments; corrosion, wear and cavitation resistant coatings; coatings for mitigating marine corrosion; coatings for chemical and petrochemical plants; thermal barrier coatings.
Book Synopsis Specification for Conformal Coating Material for Use on Printed Circuit Assemblies by : British Standards Institution
Download or read book Specification for Conformal Coating Material for Use on Printed Circuit Assemblies written by British Standards Institution and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Conformal Coatings for Future Spacecraft Applications by : Barrie D. Dunn
Download or read book Evaluation of Conformal Coatings for Future Spacecraft Applications written by Barrie D. Dunn and published by . This book was released on 1994 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Protection Performance of Conformal Coatings in Harsh Environments by : Ling Zou
Download or read book Protection Performance of Conformal Coatings in Harsh Environments written by Ling Zou and published by . This book was released on 2006 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coating Materials for Electronic Applications by : James J. Licari
Download or read book Coating Materials for Electronic Applications written by James J. Licari and published by Springer. This book was released on 2003-11-27 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: Besides a discussion of the traditional roles of coatings for moisture and environmental protection of printed circuit assemblies, this book covers dielectric coatings that provide electrical functions such as the low-dielectric-constant dielectrics used to fabricate multilayer interconnect substrates and high-frequency, high-speed circuits. There is an entire chapter of over a dozen processes for masking, cleaning, and surface preparation and a comprehensive review of over 20 processes for the application and curing of coatings. Finally, the author discusses regulations of OSHA, EPA, and other government agencies which have resulted in formulation changes to meet VOC and toxicity requirements.
Book Synopsis Conformal Coatings for Panels, Printed Circuit and Panels, Electronic Circuit by : AMS G8 Aerospace Organic Coatings Committee
Download or read book Conformal Coatings for Panels, Printed Circuit and Panels, Electronic Circuit written by AMS G8 Aerospace Organic Coatings Committee and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Standard defines the general requirements and provides a system for the control of quality for conformal coatings suitable for application to printed circuit assemblies. This Standard is a direct replacement for DEF STAN 59-47 and has been reproduced by SAE International under the UK Defence Intellectual Property Rights (DIPR) Agreement D/IPR/04/CR-0239-17-0008. The technical content remains unchanged from Issue 4 of the Defence Standard it supersedes. Some alterations to the qualification and process control arrangements have been made. Any queries should be referred via the link shown in the feedback box at the bottom of this page.
Book Synopsis Evaluating the Effect of Conformal Coatings in Reducing the Rate of Conductive Anodic Filament Formation by :
Download or read book Evaluating the Effect of Conformal Coatings in Reducing the Rate of Conductive Anodic Filament Formation written by and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conductive anodic filament (CAF) formation is a failure mode in printed wiring boards (PWB) which occurs when the circuit is operated under a high voltage gradient. Humidity also plays a factor since the boards must be stored, or operated in a humid environment. This failure mode is enhanced by certain water soluble fluxes or hot air solder leveling (HASL) fluids. The objective of this research was to examine the effect of three different conformal coatings in reducing the incidence of CAF associated with a variety of water-soluble flux formulations. To achieve this, a series of fluxes were evaluated for their propensity to enhance CAF. Several of these were chosen for further examination with acrylic, silicone and parylene C conformal coatings. Of the three conformal coatings tested only parylene C was effective in preventing CAF and dendrite formation in all cases. Silicone coatings showed bubbles present on some of the samples aged at 85 deg C for the 28-day test. Localized debonding occurred on some of the acrylic and the parylene C boards. Also, some boards exhibited localized debonding of epoxy/glass after during aging of the coating, suggested chemical interactions with flux residues creating mechanical stresses. One set of boards was subjected to higher processing temperatures similar to those that would be associated with lead-free soldering. When compared to boards processed with the same fluxes using the lower processing temperatures, the high temperature boards showed significant increase in CAF formation.
Book Synopsis Coatings for Loaded Printed Wire Boards (Conformal Coatings). Methods of Test by : British Standards Institute Staff
Download or read book Coatings for Loaded Printed Wire Boards (Conformal Coatings). Methods of Test written by British Standards Institute Staff and published by . This book was released on 2004-05-19 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protective coatings, Insulating coatings, Electrical insulating materials, Coatings, Insulated wires, Printed wiring, Printed-circuit boards, Test methods, Environmental testing, Test specimens, Specimen preparation
Book Synopsis IPC-TR-587 Conformal Coating Material and Application ``State of the Industry''' Assessment Report by : Ipc
Download or read book IPC-TR-587 Conformal Coating Material and Application ``State of the Industry''' Assessment Report written by Ipc and published by . This book was released on 2020-06-30 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1976 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1997 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
