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This technical paper covers the testing and evaluation of polymeric conformal coatings for moisture and insulation resistance (MIR) and dielectric withstanding voltage (DWV). This effort was initiated by the IPC Conformal Coating Task Group to support technical decisions for IPC coating specification CC-830 as part of the Revision C process. MIR testing was done per a modified method of IPC-TM-650...

A discussion was held in the 5-33AWG (ad hoc working group), on things that conformal coat professionals (materials and processes) wish designers knew about conformal coating. The 5-33AWG group is comprised of individuals from OEMs, coating suppliers, and test lab personnel.

IPC-HDBK-840 supplements the solder mask requirements established in IPC specifications such as IPC-SM-840 and IPC-6012 by providing detailed information on solder mask types, application processes, pre- and post- assembly processes, characteristics and properties that are useful in the selection and use of the most appropriate mask type for a given application. Applicable to solder mask...

The IPC-WP-021 white paper considers conformal coatings, like many high-performance materials, have evolved considerably since the 1990s. New coatings, such as fluoropolymers or hybrid coatings, have come on the market, many of which offer superior protection characteristics, but do not fit into the existing classifications of either MIL-I-46058 or IPC-CC-830. The IPC-WP-021 white paper discusses...

This document provides tests that record changes in surface insulation resistance (SIR) on a representative sample of a printed circuit assembly. It quantifies any deleterious effects that might arise from solder flux or other process residues left on external surfaces after soldering, which can cause unwanted electrochemical reactions that grossly affect reliability. It uses test vehicles that...

While there are a variety of industry test vehicles for the examination of materials compatibility, most available test boards leave something to be desired as there is often a dramatic difference in materials between such test boards and produced assemblies. A test vehicle was needed which could be used for both ion chromatography and SIR testing that would be more representative of mainstream...

Cleaning of stencils and misprinted PCBs has taken an increasingly important role in surface mount technology. Fine and ultra-fine pitch lands, together with other advanced packages, place new demands on stencil cleaning. Paste volume is a critical issue for fine, ultra-fine, chip-scale, BGA and flip-chip components. Insufficient solder due to clogging of stencil apertures is a primary cause of...

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 document has been created to help define criteria that will yield better test methods for use by the electronics and related industries. Key objectives to validating a new test method procedure are covered, including the usage of objective evidence to verify that the elements defined within a method fulfill the intended use and that the method yields repeatable and reproducible results when...

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...

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...

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

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。

This is the industry standard for qualification and quality conformance of conformal coating. Its intent is to show how to obtain maximum information with minimum test redundancy. Includes requirements and evaluations of material properties using standardized test vehicles. Amendment 1 updates include new qualification, retention and conformance inspection requirements for FTIR, MIR and hydrolytic...

中文描述 本文件为设计与制造焊膏及表面贴装胶用模板提供 指导以及采用通孔或者倒装芯片器件的混装技术模 板设计，其中包括锡铅和无铅焊膏、套印、二次印 刷和阶梯模板设计之间的差别。该文件同时提供了 样品定购单和用户检验检查表

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.

IPC-WP-019A, un libro blanco revisado que proporciona una visión de conjunto sobre los requisitos de limpieza iónica, junto con ejemplos de pruebas y de requisitos para la aceptabilidad en cuanto a limpieza o presencia de residuos. Presenta también un resumen de la historia de la prueba de ROSE junto con explicaciones sobre las limitaciones de esta prueba.

This handbook has been written to assist the designers and users of potting and encapsulation in understanding the characteristics of various materials, as well as the factors that can modify those characteristics when the potting or encapsulation is applied. The equipment and processes involved in the preparation and application of potting and encapsulation are also covered. The challenge in...

This handbook is a compilation of the conformal coating industry's practical experience, and will assist the designers and users of conformal coatings in making informed choices. Users will better understand the properties of the various conformal coatings, the results to be achieved by its application and how to verify that these goals have been met. Use this document as a supplement in...

This document 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.

IPC-WP-019A修订白皮书概述了新的离子清洁度要求，从残留物/清洁度角度提供了可接受性测试和要求的实例。 还提供了ROSE测试的历史，并解释了该测试的缺点。

IPC-WP-019Aでは、イオン清浄度要件の概要を説明し、残留物/清浄度の観点からテストの例と許容性要件を示す。 ROSE試験の歴史も、その試験の欠点の説明とともに提供する