Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Nanbo Li Miao Cai Jianna Zheng Shunfeng Han Riyang Deng Boyi Wu Dongji Xie Daoguo Yang |
| Copyright Year | 2015 |
| Description | Author affiliation: Flextronics Manuf. Co., Zhuhai, China (Boyi Wu) || Guangxi Key Lab. of Manuf. Syst. & Adv. Manuf. Technol., Guilin Univ. of Electron. Technol., Guilin, China (Nanbo Li; Miao Cai; Jianna Zheng; Shunfeng Han; Riyang Deng; Daoguo Yang) || NVIDIA Corp., Santa Clara, CA, USA (Dongji Xie) |
| Abstract | The pin-pull test is appealing because it can obtain a very high percentage of laminate cracking failures. In this paper, a pin-pull tester using a promoted soldering method is designed and manufactured. The improved pin soldering process is provided based on a method proposed in previous study. First, the requirement to form solder ball on the printed circuit board (PCB) pad is canceled, and in addition the activation flux is utilized in the material preparation step instead of applying in soldering process. Second, A solder ball on the pin is required enough weight such that the liquid solder ball can drop down from a short distance during soldering step; herein, the enough weight is defined as that the gravity of liquid solder is bigger than the upward wetting force produced by the liquid solder to the heating pin. The software for the testing procedure has been developed for the tester too. Finally, the developed pin-pull tester is utilized to assess the strength susceptibility among three types of PCB pads. Following the promoted process, the pin can be soldered on the pad easily and effectively while the flux coating is activated. The manufactured pin-pull tester, assisting with the promoted testing procedure, can perform the testing successfully. The capability to perform the pin-pull testing automatically is the unique advantage of this developed tester. The test results indicate that large number of traces attached to the pad may significantly increase the pad's strength such that resistance to the pad cratering is improved. The pin-pull tester is expected to be improved continuously, and used in many phases, such as pad designing, PCB material out quality control (OQC) & Incoming quality control (IQC) and quality control in product line. |
| Starting Page | 1198 |
| Ending Page | 1202 |
| File Size | 1256633 |
| Page Count | 5 |
| File Format | |
| e-ISBN | 9781467379991 |
| DOI | 10.1109/ICEPT.2015.7236794 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-08-11 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Coatings Heating Solids Joints Microcomputers User interfaces Force quality control printed circuit board(PCB) pad cratering pin-pull test tensile tester pad strength failure mode |
| 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...
|