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iNEMI Seeks Participation for PCBA Project
April 1, 2012 |Estimated reading time: 1 minute
Background
The IPC9704 standard was revised February 2012 (now IPC9704A) to encompass the impact of lead-free electronics and to incorporate consistent strain gage placement/measurement techniques to monitor printed circuit board assembly (PCBA) flexure within a manufacturing environment. With the intent of making IPC9704A strictly a methodology document, appendices A and B that were present in original IPC9704 documentation were removed. These appendices are very important. They outline strain limits and provide reference for rate limited strain guidance for eutectic solder. New lead-free content additions within these appendices are intended to form the basis of a new white paper guidance document. The legacy SnPb guidance will be maintained in the white paper. The benefit of this new approach is to ensure that new lead-free strain limiting guidance can be more easily updated in a timely manner, as new information becomes available. This project team is being formed to develop such a white paper.
Scope of Work of Project's White Paper:
- Will encompass various lead-free technologies and materials--SnAgCu based alloys, laminates, PCB thickness.
- Intended to provide manufacturing strain guidance for lead-free BGA only (by package attributes--BGA pitch, package body side and package type along with pad design) based on existing data collection.
- Planned to make recommendation for further testing, if necessary, based on existing data collection.
- Recommendations will be provided to the IPC/JEDEC committee for further industry review and feedback/comments.
- Develop BGA strain guidance will apply to primary attach and rework manufacturing process operations.
Teleconference
An open teleconference will be held on Thursday, April 5, 2012 at 1:00 p.m. EDT.
Click here for more details on the project and teleconference.
Steps for Joining the Project
Please note: iNEMI membership is required to participate in this project. The period for becoming a founding member for this project will close on April 13, 2012.
For iNEMI members:
- Complete and sign the project statement.
- Fax the completed statement(s) to +1 (703) 834-2735 or scan and e-mail to infohelp@inemi.org.
For non-members:
- Discuss annual membership fees with Bill Bader in North America, Haley Fu in Asia, or Grace O'Malley in Europe.
- Complete the iNEMI membership documents. (Click here for the required forms.)
- Fax the completed documents to +1 (703) 834-2735 or scan and e-mail to infohelp@inemi.org.
- Complete and sign the project statement.
- Fax the completed statements to +1 (703) 834-2735 or scan and e-mail to infohelp@inemi.org.