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 | 2012-07-10 11:27:53.0
Nihon Superior (Singapore) Pte. Ltd.,announces that it will showcase a new, expanded range of products in booth G2 at the upcoming IPCA INTERNATIONAL EXPO 2012, scheduled to take place July 25-27, 2012 in KTPO TRADE CENTRE, WHITEFIELD, in BANGALORE, INDIA.
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Technical Library | 2019-05-01 23:18:27.0
Moisture can accelerate various failure mechanisms in printed circuit board assemblies. Moisture can be initially present in the epoxy glass prepreg, absorbed during the wet processes in printed circuit board manufacturing, or diffuse into the printed circuit board during storage. Moisture can reside in the resin, resin/glass interfaces, and micro-cracks or voids due to defects. Higher reflow temperatures associated with lead-free processing increase the vapor pressure, which can lead to higher amounts of moisture uptake compared to eutectic tin-lead reflow processes. In addition to cohesive or adhesive failures within the printed circuit board that lead to cracking and delamination, moisture can also lead to the creation of low impedance paths due to metal migration, interfacial degradation resulting in conductive filament formation, and changes in dimensional stability. Studies have shown that moisture can also reduce the glass-transition temperature and increase the dielectric constant, leading to a reduction in circuit switching speeds and an increase in propagation delay times. This paper provides an overview of printed circuit board fabrication, followed by a brief discussion of moisture diffusion processes, governing models, and dependent variables. We then present guidelines for printed circuit board handling and storage during various stages of production and fabrication so as to mitigate moisture-induced failures.
Technical Library | 2019-06-20 00:09:49.0
It is well known that during service the layer of Cu6Sn5 intermetallic at the interface between the solder and a Cu substrate grows but the usual concern has been that if this layer gets too thick it will be the brittleness of this intermetallic that will compromise the reliability of the joint, particularly in impact loading. There is another level of concern when the Cu-rich Cu3Sn phase starts to develop at the Cu6Sn5/Cu interface and an imbalance in the diffusion of atomic species, Sn and Cu, across that interface results in the formation at the Cu3Sn/Cu interface of Kirkendall voids, which can also compromise reliability in impact loading. However, when, as is the case in some microelectronics, the copper substrate is thin in relation to the volume of solder in the joint an overriding concern is that all of the Cu will be consumed by reaction with Sn to form these intermetallics.This paper reports an investigation into the kinetics of the growth of the interfacial intermetallic, and the consequent reduction in the thickness of the Cu substrate in solder joints made with three alloys, Sn-3.0Ag-0.5Cu, Sn-0.7Cu-0.05Ni and Sn-1.5Bi-0.7Cu-0.05Ni.
Technical Library | 2023-11-20 18:10:20.0
The electronics production is prone to a multitude of possible failures along the production process. Therefore, the manufacturing process of surface-mounted electronics devices (SMD) includes visual quality inspection processes for defect detection. The detection of certain error patterns like solder voids and head in pillow defects require radioscopic inspection. These high-end inspection machines, like the X-ray inspection, rely on static checking routines, programmed manually by the expert user of the machine, to verify the quality. The utilization of the implicit knowledge of domain expert(s), based on soldering guidelines, allows the evaluation of the quality. The distinctive dependence on the individual qualification significantly influences false call rates of the inbuilt computer vision routines. In this contribution, we present a novel framework for the automatic solder joint classification based on Convolutional Neural Networks (CNN), flexibly reclassifying insufficient X-ray inspection results. We utilize existing deep learning network architectures for a region of interest detection on 2D grayscale images. The comparison with product-related meta-data ensures the presence of relevant areas and results in a subsequent classification based on a CNN. Subsequent data augmentation ensures sufficient input features. The results indicate a significant reduction of the false call rate compared to commercial X-ray machines, combined with reduced product-related optimization iterations.
TR7500 SIII CI brings easy Conformal Coating Inspection that combines a multi-camera optical design with specialized multi-phase lighting to inspect UV-active Conformal Coatings. Included angle view cameras ensure the TR7500 SIII CI identifies even t
Industry News | 2019-12-16 22:45:13.0
Vacuum soldering system is a kind of process welding furnace for high-end products, such as laser devices, aerospace, electric cars and other industries, compared to the traditional chain furnace, has great technical advantages.
Industry News | 2012-03-28 15:59:44.0
Nihon Superior Shanghai Co. Ltd., a subsidiary of Nihon Superior Co. Ltd. will showcase a new and expanded range of products based on its SN100C® silver-free, lead-free solder at the upcoming NEPCON China 2012 exhibition in Shanghai.
Industry News | 2020-10-27 12:43:49.0
Kurtz Ersa Inc., a leading supplier of electronics production equipment,received a 2020 Mexico Technology Award in the category of Soldering Equipment – Convection for its EXOS 10/26 convection reflow soldering system. The award was announced during a Virtual Awards Ceremony on Monday, October 26, 2020.
