Industry News | 2009-09-17 15:00:44.0
OSAKA, JAPAN — September 2009 — Nihon Superior Co. Ltd., a supplier of advanced soldering and brazing materials to the global market, announces that research sponsored by the company was recognized by the University of Queensland as one of the best examples of a successful cooperation between the university and the industry.
Industry News | 2022-09-19 05:59:24.0
Indium Corporation® will feature innovative material solutions designed to meet the evolving challenges of SiP and HIA at the 55th International Symposium on Microelectronics (IMAPS) from Oct. 3-6 in Boston, Mass., U.S.
Industry News | 2023-09-25 20:04:34.0
Indium Corporation® will proudly feature an array of innovative materials solutions for thermal management and advanced packaging applications at the IMAPS International Symposium on Microelectronics, October 3-4, in San Diego, California.
Industry News | 2023-11-20 15:34:41.0
Indium Corporation was honored with two prestigious GLOBAL Technology Awards during an awards ceremony on November 14 at Productronica in Munich, Germany. The company was honored in both the Flux and Adhesives/Underfills Encapsulants categories for NC-809, a halogen-free, ultra-low residue flip-chip flux, and InTACK™, a drop-in, robust tacking agent for power module assembly, respectively. Presented by Global SMT & Packaging, the Global Technology Awards recognize the best new innovations in the printed circuit assembly and packaging industries introduced in the past 12 months.
Industry News | 2012-02-07 16:20:22.0
Nihon Superior announces that its Senior Technical Advisor Keith Sweatman will present the paper titled “Effect of Cooling Rate on the Intermetallic Layer in Solder Joints” at the upcoming IPC APEX Expo.
Industry News | 2011-12-30 23:35:59.0
Nihon Superior will issue a new series of guides on “Key Factors in the Selection of Lead-Free Solders.” This series is intended to address the challenges in choosing a reliable lead-free solder. The first guide in the series is titled “Reliability of Lead-Free Solder in Thermal Cycling.”
Industry News | 2022-08-14 14:12:26.0
Indium Corporation® is proud to feature its cutting-edge soldering and thermal materials at SEMICON Taiwan, September 14-16, in Taipei, Taiwan.
Industry News | 2023-08-29 07:11:55.0
Indium Corporation® will showcase selections from its portfolio of proven products for thermal management and power electronics applications at SEMICON Taiwan, September 6‒8, in Taipei. In addition, Senior Area Technical Manager Jason Chou will deliver a presentation, The Lead-Free Materials Evolution in Power Die-Attach Soldering Applications, on September 7.
Industry News | 2010-09-02 10:54:09.0
Nihon Superior Co. Ltd., a supplier of advanced soldering materials to the global market, announces that the research it sponsored at the University of Queensland, Australia provided the basis for the paper that earned an ICEP Outstanding Paper Award.
Technical Library | 2021-07-20 20:02:29.0
During the manufacturing of printed circuit boards (PCBs) for a Flight Project, it was found that a European manufacturer was building its boards to a European standard that had no requirement for copper wrap on the vias. The amount of copper wrap that was measured on coupons from the panel containing the boards of interest was less than the amount specified in IPC-6012 Rev B, Class 3. To help determine the reliability and usability of the boards, three sets of tests and a simulation were run. The test results, along with results of simulation and destructive physical analysis, are presented in this paper. The first experiment involved subjecting coupons from the panels supplied by the European manufacturer to thermal cycling. After 17 000 cycles, the test was stopped with no failures. A second set of accelerated tests involved comparing the thermal fatigue life of test samples made from FR4 and polyimide with varying amounts of copper wrap. Again, the testing did not reveal any failures. The third test involved using interconnect stress test coupons with through-hole vias and blind vias that were subjected to elevated temperatures to accelerate fatigue failures. While there were failures, as expected, the failures were at barrel cracks. In addition to the experiments, this paper also discusses the results of finite-element analysis using simulation software that was used to model plated-through holes under thermal stress using a steady-state analysis, also showing the main failure mode was barrel cracking. The tests show that although copper wrap was sought as a better alternative to butt joints between barrel plating and copper foil layers, manufacturability remains challenging and attempts to meet the requirements often result in features that reduce the reliability of the boards. Experimental and simulation work discussed in this paper indicate that the standard requirements for copper wrap are not contributing to the overall board reliability, although it should be added that a design with a butt joint is going to be a higher risk than a reduced copper wrap design. The study further shows that procurement requirements for wrap plating thickness from Class 3 to Class 2 would pose little risk to reliability (minimum 5 μm/0.197 mil for all via types).Experimental results corroborated by modeling indicate that the stress maxima are internal to the barrels rather than at the wrap location. In fact, the existence of Cu wrap was determined to have no appreciable effect on reliability.
