Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Chang, G.C.-C. Chi-Ko Yu Shao, T. Chen, C. Lee, J. Bansal, A. Kuo-Chuan Liu |
| Copyright Year | 2010 |
| Description | Author affiliation: Integrated Service Technology, 19, Pu-Ding Rd., Hsin-chu 30072, Taiwan, R.O.C (Chang, G.C.-C.; Chi-Ko Yu; Shao, T.; Chen, C.; Lee, J.) || Cisco Systems, Inc., San Jose, CA, USA (Bansal, A.; Kuo-Chuan Liu) |
| Abstract | The major purpose of the mechanical stress screening is to screen out the products which have potential defects which lie in materials, design, process, and operation etc. If the screening is thorough before the products are shipped, the rate of the abnormal failure at the users' side can be eliminated or lowered significantly. The manufacturing lot which goes through appropriate screening will have better reliability and meanwhile have less issues of repair, which achieve the goal of cost effectiveness. The thermal cycling and random vibration are two common methods used in stress screening test. The 50%≃80% of the product limit which is acquired after the high accelerated life test (HALT) in the design phase is applied to the products by the highly accelerated stress screening (HASS) after the design phase. Solder joint defect is one can pose a significant risk in modules if the design, lead-free assembly, and handling processes are not carefully controlled. For the reasons mentioned above, it takes further investigation to learn whether the methods applied to the system-level final products are an effective evaluation to screen the solder joint defects in the process. In this study, the random vibration is selected to evaluate whether the defects in the process can be found. The test vehicles, daisy chain lead-free 0.8mm pitch 60-ball BGA components, were assembled on single MiniDIMM cards where defects are intentionally created in some solder masks. The reflow temperature and solder paste volume are also the factors applied to the modules respectively. After the test is completed, the result reveals that the samples with the solder joint defect failed while normal samples do not fail. Due to the efficiency of the screening conditions vs. defect types, it cannot be firmly concluded that the random vibration is an effective method to screen assembly defects. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 198943 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424497836 |
| ISSN | 21505942 |
| e-ISBN | 9781424497867 |
| e-ISBN | 9781424497850 |
| DOI | 10.1109/IMPACT.2010.5699596 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-10-20 |
| Publisher Place | Taiwan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Vibrations Stress Screening Solder Paste Lead Random Vibration Reliability Solder Mask Soldering Reflow Stress Testing |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|