Robert Blancquaert, Miloš Somora, M.S. Vijayaraghavan and D.J. Lowrie
ISHM‐Benelux has recently set up a permanent secretariat at the following address:
Two members of ISHM‐Hungary, Professor Zsolt Illyefalvi‐Vitéz, ELC representative, and Professor Gábor Harsányi, president and TPC representative, attended the NATO Advanced…
Abstract
Two members of ISHM‐Hungary, Professor Zsolt Illyefalvi‐Vitéz, ELC representative, and Professor Gábor Harsányi, president and TPC representative, attended the NATO Advanced Research Workshop on MCM‐C/Mixed Technologies in Florida, USA, in May co‐sponsored by ISHM‐US and organised by:
M.G. Firmstone, P.M. Bartholomew, D.J.J. Lowrie, S.H. Mannan and D.A. Hutt
The benefits of a “no flow” process have been well documented in the recent past. The limitations of the previously reported materials in current use have been overcome via a…
Abstract
The benefits of a “no flow” process have been well documented in the recent past. The limitations of the previously reported materials in current use have been overcome via a unique chemistry which can be tailored to the application. Room temperature storage, effective fluxing, coupled with minimal outgassing, and a choice of reworkability after reflow or, if rework is not required, a full cure, can now be achieved within a single materials technology. This paper describes the properties of the new family of materials compared to conventional post‐deposited underfills. The development sequence and the procedure for characterisation of material properties, including the evaluation of the effectiveness of the fluxing action on a range of solder alloys, is documented. A typical application is described, outlining how a minimum of two process steps can be eliminated and how improvements in materials handling, process robustness, and ultimate yield, have been realised. A simple rework regime is also proposed, and the almost “drop in replacement” aspect of the new material is discussed.
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D.T. Hsu, H.K. Kim, F.G. Shi, H.Y. Tong, S. Chungpaiboonpatana, C. Davidson and J.M. Adams
The curing reaction of a promising “no flow” flip chip underfill encapsulant is investigated by using a differential scanning calorimeter. It is found that the tested underfill…
Abstract
The curing reaction of a promising “no flow” flip chip underfill encapsulant is investigated by using a differential scanning calorimeter. It is found that the tested underfill can reach complete cure within 20 minutes at various cure temperatures. It is also shown that this “no flow” underfill could fully cure within one minute at 160°C after being heated at 220°C for one minute, demonstrating that this “no flow” underfill can be completely cured during the solder reflow cycle. The reaction order and the rate constant are determined to describe the curing progress. It is shown that the autocatalytic effect dominates the reaction kinetics.
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Karlos A. Artto, Hans Georg Gemünden, Derek Walker and Pirjo Peippo-Lavikka
Many literature reviews on project management (PM) research are limited to studies published only in PM journals but some reviews do expand their analysis on PM research published…
Abstract
Purpose
Many literature reviews on project management (PM) research are limited to studies published only in PM journals but some reviews do expand their analysis on PM research published also in journals belonging to the management studies field. However, the authors found no previous literature reviews comparing the PM content in different sectors outside the management studies field. Therefore, the analysis and findings of PM content derived from the sector-specific engineering and technology-focused journals are new. The paper aims to discuss this issue.
Design/methodology/approach
The authors analyze PM content in nine different sectors, where each sector and its inherent research is connected to specific engineering, technological, or industry-related disciplines. The authors conduct an evidence-informed literature review on PM knowledge in the distinct literatures of these nine sectors. The period of analysis is 24 years from 1986-2009. The authors discuss potential consequences of the findings’ sector-specificity for future PM domain development.
Findings
The perspective on different origins of PM leads to a meta-level PM concept covering several different PM domains, each with its own sector specific and separated development path.
Research limitations/implications
The literature analysis purposefully excluded PM journals and management studies, and the authors focused only on sector-specific engineering and technology-focused journals that represent knowledge and wisdom of different PM contents in nine sectors.
Practical implications
The findings have significant potential to contribute to scholarly discussion on the development of a universal PM theory. For applicability across sectors, the authors suggest a modular PM theory with different sector-specific modules for knowledge, concepts, and underlying assumptions.
Originality/value
Currently, this discussion has been mainly focused on theorizing concepts and approaches in management studies only. This study expands the understanding to engineering and technology-focused journals across nine industry sectors/domains.