Industry News | 2005-01-27 11:57:12.0
The Indium Corporation of America has introduced WF-7742 Wave Solder Flux
Industry News | 2018-10-18 08:02:28.0
What are the advantages of use nitrogen process for SMT reflow oven?
E-mail: tina@gdmoje.com
Industry News | 2004-11-10 18:04:10.0
Frenchtown, NJ, November 2004
Technical Library | 2017-07-06 15:50:17.0
Head-in-pillow (HiP) is a BGA defect which happens when solder balls and paste can't contact well during reflow soldering. Package warpage was one of the major reasons for HiP formation. In this paper, package warpage was measured and simulated. It was found that the package warpage was sensitive to the thickness of inside chips. A FEM method considering viscoelastic property of mold compound was introduced to simulate package warpage. The CTE mismatch was found contributes to more than 90% of the package warpage value when reflowing at the peak temperature. A method was introduced to measure the warpage threshold, which is the smallest warpage value that may lead to HiP. The results in different atmospheres showed that the warpage threshold was 50μm larger in N2 than that in air, suggesting that under N2 atmosphere the process window for HiP defects was larger than that under air, which agreed with the experiments.
Technical Library | 2020-08-05 18:49:32.0
The evolution of internet-enabled mobile devices has driven innovation in the manufacturing and design of technology capable of high-frequency electronic signal transfer. Among the primary factors affecting the integrity of high-frequency signals is the surface finish applied on PCB copper pads – a need commonly met through the electroless nickel immersion gold process, ENIG. However, there are well-documented limitations of ENIG due to the presence of nickel, the properties of which result in an overall reduced performance in high-frequency data transfer rate for ENIG-applied electronics, compared to bare copper. An innovation over traditional ENIG is a nickel-less approach involving a special nano-engineered barrier designed to coat copper contacts, finished with an outermost gold layer. In this paper, assemblies involving this nickel-less novel surface finish have been subjected to extended thermal exposure, then intermetallics analyses, contact/sheet resistance comparison after every reflow cycle (up to 6 reflow cycles) to assess the prevention of copper atoms diffusion into gold layer, solder ball pull and shear tests to evaluate the aging and long-term reliability of solder joints, and insertion loss testing to gauge whether this surface finish can be used for high-frequency, high density interconnect (HDI) applications.
Industry News | 2022-01-10 16:39:30.0
Indium Corporation's Ron Lasky, Ph.D., PE, senior technologist, will share his industry knowledge and expertise during two presentations at the SMTA Pan Pacific Microelectronics Symposium (SMTA PanPac), Jan. 31-Feb. 3, Honolulu, O'ahu, Hawaii, U.S.
Industry News | 2018-12-08 03:25:54.0
Basic Soldering Guide – How to Solder Electronic Components
Industry News | 2009-01-23 02:17:04.0
OSAKA, JAPAN � January 2009 � Nihon Superior Co. Ltd., an advanced soldering and brazing supplier to the worldwide market, introduces NS-F850 rosin-based flux for lead-free wave soldering.
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