Technical Library: dek 248 rs (Page 1 of 1)

Reliable Selective Soldering For High Volume Assemblies

Technical Library | 2020-04-14 16:00:20.0

The number of through hole connections on a circuit assembly are decreasing with the drive toward miniaturization. When these assemblies are manufactured in high volumes the most convenient method is selective soldering. Although selective soldering is very well introduced in automotive and industrial applications it can also be a very efficient method to solder high volume consumer products.

ITW EAE

Reliability of Embedded Planar Capacitors under Temperature and Voltage Stress

Technical Library | 2015-05-21 18:46:31.0

In this work the reliability of an embedded planar capacitor laminate under temperature and voltage stress is investigated. The capacitor laminate consisted of an epoxy-BaTiO3 composite sandwiched between two layers of copper. The test vehicle with the embedded capacitors was subjected to a temperature of 125oC and a voltage bias of 200 V for 1000 hours. Capacitance, dissipation factor, and insulation resistance were monitored in-situ. Failed capacitors exhibited a sharp drop in insulation resistance, indicating avalanche breakdown. The decrease in the capacitance after 1000 hours was no more than 8% for any of the devices monitored. The decrease in the capacitance was attributed to delamination in the embedded capacitor laminate and an increase in the spacing between the copper layers.

CALCE Center for Advanced Life Cycle Engineering

Design and Experiment of a Moving Magnet Actuator Based Jetting Dispenser

Technical Library | 2021-01-13 21:29:27.0

Developing actuators to drive high-frequency jetting dispensers in the dispensing technology for electronic assembly applications has become a concern in recent years. This study proposed a new jetting dispenser without a displacement amplification mechanism directly actuated by a moving magnet actuator (MMA) to jet small fluid droplets. In this article, the main geometric dimensions of ...

National Cheng Kung University

The Future of Solid-State Electronics

Technical Library | 1999-05-06 13:44:43.0

This paper explores the direction in which IC technology is headed, highlights potential roadblocks and possible solutions, and discusses some of the physical considerations that could determine the ultimate limits of integration.

Alcatel-Lucent

Critical Evaluation of Laboratory Potentiometric Electronic Tongues for Pharmaceutical Analysis - An Overview

Technical Library | 2019-12-18 23:28:07.0

Electronic tongue systems equipped with cross-sensitive potentiometric sensors have been applied to pharmaceutical analysis, due to the possibility of various applications and developing new formulations. Many studies already proved the complementarity between the electronic tongue and classical analysis such as dissolution tests indicated by Pharmacopeias. However, as a new approach to study pharmaceuticals, electronic tongues lack strict testing protocols and specification limits; therefore, their results can be improperly interpreted and inconsistent with the reference studies. Therefore, all aspects of the development, measurement conditions, data analysis, and interpretation of electronic tongue results were discussed in this overview. The critical evaluation of the effectiveness and reliability of constructed devices may be helpful for a better understanding of electronic tongue systems development and for providing strict testing protocols.

Warsaw University of Technology

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