10/15/13 – 5-32e Conductive Anodic Filament (CAF) Task Group
Tony Senese, Panasonic, made an important point regarding the influence moisture has in accelerated testing for conductive anodic filament (CAF) growth in printed boards. The frequency of field failures related to CAF growth has grown exponentially over the last decade. IPC Task Group 5-32e has taken on the challenge of defining a test method that helps predict and accelerate the growth of CAF. The task group reviewed the final report and is making modification recommendations to IPC Test Method 2.6.25a. The new test method will provide manufacturers a method to accelerate the growth of filaments and predict if circuit boards are at risk for reliability-related failures in the field. For more information, contact IPC staff liaison, Tom Newton, at TomNewton@ipc.org.
10/15/13 – 5-33a Conformal Coating Task Group
John Waryold, Humiseal Division, Chase Corp, and task group committee chair, reviewed the development of IPC-CC-830, Qualification and Performance of Electrical Insulating Compounds for Printed Wiring Assemblies. Waryold described differences between the military standard, MIL-I-46058C for Electrical Insulating Compounds, which is still being used as an industry reference tool and IPC-CC-830. The Conformal Coating Task Group is in the process of making revisions to IPC-CC-830 to bring it up to date in accordance with industry best practices. A large amount of data for a round robin test, including hundreds of coating properties was shared with group. Data files will be available to the task group in November. For more information, contact IPC staff liaison, Kris Roberson, at KrisRoberson@ipc.org.
10/15/13 – 6-10c Plated-Through Via Reliability Test Methods Task Group
Bill Birch, PWB Interconnect Solutions Inc., discussed the importance of current induced thermal cycling (CITC) and the influence it has on via reliability. The task group presented an outline for a validation plan to be incorporated into IPC-TM-650 Test Method 2.6.26a. The group also shared findings and proposed a new test method that defines CITC method protocol. Reproducibility and repeatability of test method was determined and recommendations are being made to test methods committee for incorporation. For more information, contact IPC staff liaison, John Perry, at JohnPerry@ipc.org.