Technical Articles From Research In Motion
Read technical articles about electronics manufacturing added by Research In Motion
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3 technical articles added by Research In Motion
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Head-On-Pillow Defect – A Pain in the Neck or Head-On-Pillow BGA Solder Defect
Sep 05, 2023 | Chris Oliphant, Bev Christian, Kishore Subba-Rao, Fintan Doyle, Laura Turbini, David Connell and Jack Q. L. Han
The head on pillow defect is becoming more common. This paper describes one such occurrence for an OEM and explains how it was dealt with. In this particular case it was solved by application of problem solving skills by the OEM, component supplier and the solder paste provider...
Elemental Compositions of Over Two Dozen Cell Phones
Nov 08, 2012 | Bev Christian, Irina Romanova, Laura Turbini
first published in the 2012 IPC APEX EXPO technical conference proceedings. Twenty-nine different cells phones have been disassembled, ground up, dissolved and analyzed for elemental content, mainly for information about the metals present in the phones, but also for some metalloids and non-metals. The paper will discuss the method used and propose possible sources in the telephones for certain elements of interest and the reasons for the interest in some of the elements....
Cleanliness of Stencils and Cleaned Misprinted Circuit Boards
Sep 09, 2010 | Bev Christian
The effectiveness of cleaning stencils and misprinted/dirty printed circuit boards can be effectively monitored. This can be done by washing known clean circuit boards and then checking to see if they have stayed clean as a result of the washing process. ...
