Search results

This paper "Long Term Investigation of Urethane Conformal Coating Against Tin Whisker Growth" was presented by Lyudmyla Panashchenko of NASA GSFC at the IPC Tin Whisker Conference, in December 2010. It describes the results of 11 years of aging of a conformal coat and its ability to inhibit tin whisker growth. It shows that whiskers continue to grow with time and how they may be constrained by the...

"Final Finish for Connectivity" was presented by George Milad of Uyemura International Corporation at the IPC Conference for the PCB Industry: Critical Issues for the Military Market, in December 2011. The author describes surface finishes applied to printed circuit boards to enhance their reliability, solderability, shelf life and the applicability to wire bonding. He also mentions the IPC...

This presentation "Trends in Military Certifications: What You Need to Know About the Obvious and the Obscure," was presented at the IPC Conference for the North American EMS Industry, What it Takes to Supply the Military, Management Session, in September 2010 by Steve DeWaters, president of Penumbra Strategies, Inc. It describes the rise of Commercial Off the Shelf (COTS) items and why Military...

There are a large number of new lead-free alloys that address the manufacturing problems inherent in current lead-free products on the market. However, their reliability properties are less understood than many of the first alloys introduced, for example SAC 305. While it is tempting to look to the new alloys as solutions to manufacturing issues of the older materials, the lack of reliability...

The IPC Solder Products Value Council’s Technical Subcommittee Report “Take Action Limits (TAL) for SAC305 Lead Free Soldering Processes Utilizing Solder Baths/Pots” reports on research on take action limits of solder pot contamination for SAC305 lead-free solder. As opposed to one maximum contamination level, the IPC SPVC opted to identify three action levels: Normal operation defined as the...

IPC-WP-023 is an IPC Technology Solutions White Paper addressing reliability issues associated with stacked microvias. There is evidence that staggering vias can result in a more robust structure; however, staggering microvias is only a temporary solution to accommodate complex designs with microvias built with weak interface structures IPC-WP-023 white paper provides an investigation of these...

IPC-WP-019A a revised white paper provides an overview of ionic cleanliness requirements, providing examples of tests and requirements for acceptability from a residue/cleanliness standpoint. The history of ROSE testing is also provided, with explanations of the shortcomings of that testing.

This original research was a cooperative effort between the EMPF and IPC, released as EMPF-RR-0013 in 1993 for better understanding of ionic cleanliness testing. The IPC Ionic Conductivity/Ion Chromatography Test Task Group has validated its continued importance and relevance to the cleaning community and IPC-TR-583 is the result. It includes how solvent temperature influences the final...

This technical report provides full detail of the round robin study charged with assessing the use of Interconnect Stress Test (IST) as a test for incoming inspection in lieu of Thermal Stress in the detection of innerlayer separations in plated-through holes. Includes background on the Post Separation Task Group, test results, round robin test plan, conclusions and test methods used. 51 pages...

Approximately 200,000 plated through-holes, covering primarily electroplated but also electroless technology, were exposed to several different thermal cycles. A number of PTH diameters, board constructions and plating thicknesses were evaluated. 80 pages. Released September 1988.

This document details the test procedures, test results and team conclusions for the IPC Cleaning and Cleanliness Testing Program, Phase 3, Low Solids Flux in Ambient Air. This effort has been part of a multi-stage program to investigate material and process alternatives to the use of chlorofluorocarbons (CFCs) in electronics manufacturing. This Phase 3 effort has been dedicated to characterizing...

An IPC Blue Ribbon Committee originally published this study. It provides extensive background and test results resolving methods to identify visible conditions such as measles in PWBs and that measles do not impact reliability. 81 Pages. Released November 1973.

This addendum to J-STD-001, originally developed for Revision B but also applicable to Revision C, proposes solutions for cost-effective testing and increased implementation. Also covers other assembly test methods that are not addressed in J-STD-001. 12 pages. Released October 1996. Now available in electronic format.

This Technical Report details the investigations into identifying stress tests that distinguish between robust and non-robust surface finishes. A robust finish will pass a test for solderability whereas a non-robust finish will fail. The stress tests identified do not necessarily duplicate real world environment (fabrication of the bare printed board through assembly), but they must correlate to...

Details the results of a two-year study to determine the effect of steam aging exposure on components. A variety of solderable finishes were used. A small production simulation utilized preconditioned and as-received samples and tested a total of 2,000 joints. 15 pages. Released July 1996.

IPC-TR-587 technical report delivers results of a major study on conformal coating. In most manufacturing specifications, conformal coating thickness is defined as the thickness of the final polymer film on a flat, unencumbered surface of the assembly, however conformal coating thickness on other assembly and component surfaces is not characterized. IPC-TR-587 is a report outlining an IPC study of...

This document, co-developed by the IPC, EIA and ASTM, represents a comprehensive report on fine pitch technology with an emphasis on tape-automated bonding and design rules. Subjects include land pattern design, types of encapsulation, TAB tape format, assembly techniques and the advantages and disadvantages of FPT. 54 pages. Released by the Surface Mount Council January 1989.

A Technical Paper by Dr. Jack Brous discussing ionic cleanliness measurement, testing methods and cleanliness standards in relation to product reliability. Also includes a brief discussion of no-clean fluxes. 8 pages. Released 1994

The 2017 North American Cable Assembly Manufacturers report includes company name, address, phone number, business manager, website, estimated 2015 worldwide revenues, facility size, manufacturing locations by region of the world, markets served, product types manufactured, agency approvals/certifications, minority business designations, and a brief description of the business. Nonmember pricing...

2019 World Cable Assembly Market, a new research report from industry leader Bishop & Associates, addresses the growth markets and regions and much more. This 17-chapter, 219-page report provides a detailed analysis of the cable assembly market by region, end-use equipment sector, and cable assembly type in US dollars for the years 2018 through 2024. Analysis is provided numerically and...

This addendum to IPC-TR-464 was released in April 1987 and represents the results of the task group study to evaluate and determine if the aging period recommended in the original Technical Report could be shortened and still provide the appropriate information on solderability retention.

IPC-TR-587 technical report delivers results of a major study on conformal coating. In most manufacturing specifications, conformal coating thickness is defined as the thickness of the final polymer film on a flat, unencumbered surface of the assembly, however conformal coating thickness on other assembly and component surfaces is not characterized. IPC-TR-587 is a report outlining an IPC study of...

本白皮书 IPC WP-019B 旨在支持 J-STD-001 修订版 H，并提供额外的指导、示例和对第 8.0 节清洁和残留物要求的理解。 推荐给那些希望实现 J-STD-001 8.0 要求的人。

La révision du livre blanc IPC-WP-019A présente les exigences en matière de propreté ionique, avec des exemples de tests et d’exigences pour l’acceptabilité du point de vue des résidus/de la propreté. Un historique des tests ROSE est également fourni, accompagné d’explications relatives aux défauts que présentent ces tests.

IPC-WP-019A ist ein revidiertes Whitepaper mit einem Überblick über die Anforderungen an ionische Reinheit, das Beispiele für Tests und Abnahmekriterien unter dem Blickwinkel von Flussmittelrückständen/Reinheit enthält. Die Geschichte des ROSE-Testverfahrens wird ebenfalls geschildert, und die Nachteile dieses Verfahrens werden erläutert.