e-Symposium

e-Symposium aims to offer selected passive components technical papers published at conferences and symposiums. EPCI is reviewing its content and its focus on description of technical issues, new approaches, problem solving techniques etc. rather than sales pitch. The target is that e-Symposium become a valueable source of information and inspiration to passive components users such as end electronic hardware designers, component and application engineers, quality personnel, strategic buyer, university lecturers, students etc.

The e-Symposium was launched in October 2017 with step by step addition of technical papers from the 1st PCNS Passive Components Networking Days.

important note: copyright statement: the e-Symposium's technical papers are published under agreement with its authors for publishing at the EPCI e-Symposium website. The papers and its content presented herein can be used only for not-for-sale usage and under a proper reference to its source.


you can select an e-Session / keywords per the list of tags below or from the side menu. As an advantage of electronic media, the same article appears in more sessions, your selected tags, so you won't miss any paper overlapping more sessions and do not need to search in multiple sessions.

e-Sessions list:

Recent e-Symposium Articles

Flyback Transformer Modelling (10/20/2017) - source: Kocaeli university Kocaeli Turkey, EPCI e-Symposium Abstract: Providing the required load power using Switch Mode Power Supplies (SMPS), leads to smaller and more efficient converters. Flyback converter is one of the most famous topologies in use. Flyback converter is equivalent to buck-boost converter with the inductor split to form a transformer. The operating principle of two converter is very similar. Both transfer energy to the load when switch is in off state. Also, both suffer from Right Half Plane (RHP) zero when operating in Continuous Conduction Mode (CCM). Flyback transformer is the most important part of flyback converter. This Continue Reading
Thick Film Power Resistor with Thick Printed Copper Terminals (10/20/2017) - source: FEE RICE University of West Bohemia Pilsen, Elceram a.s., EPCI e-Symposium Abstract: This paper is focused on the thick film power resistors with copper terminals. These terminals are manufactured by the new Thick Printed Copper (TPC) technology. This technology is based on sequential screen printing and firing of copper paste in nitrogen atmosphere on alumina substrate. TPC technology is predominantly used for power electronic substrates manufacturing. The major trends of power electronics are continual miniaturization and power increasing. It brings increased requirements on electronic components particularly in terms of heat dissipation. Thick film power resistor with copper terminals represents potential Continue Reading
Temperature Dependence of Leakage Current Degradation of Tantalum Capacitors at High Electric Field (10/20/2017) - source: Brno University of Technology CEITEC, AVX Czech Republic s.r.o., EPCI e-Symposium Abstract: Tantalum capacitors have been the preferred capacitor technology in long lifetime electronic devices thanks to the stability of its electric parameters and high reliability. However, long time application of elevated temperature and high electric field can result in capacitor leakage current increase in time. In this paper the effect of ions drift and diffusion at different temperatures on DCL degradation is analysed. DCL vs. time characteristics at temperatures from 65degC to 155degC were studied in order to determine the parameters of leakage current ageing. Results for four Continue Reading
Kinetics of Moisture Sorption and Reverse Bias Degradation in Chip Tantalum Capacitors (10/20/2017) - source: ASRC Federal Space and Defense (NASA), EPCI e-Symposium Abstract: Exposure of chip MnO2 tantalum capacitors to humid environments might result in increased ESR, leakage currents, and first turn-on failures.  However, there is a lack of literature data on the effect of moisture on reverse bias behavior of the parts. The presence of moisture can also result in pop-corning when a high water vapor pressure develops when moisture absorbed in pores of tantalum slugs vaporizes instantly during soldering process resulting in damage to capacitors. A study of kinetics of moisture ingress to and release from active elements of capacitors would Continue Reading
Energy Harvesting is not Fiction Anymore (10/20/2017) - source: Würth Elektronik eiSos GmbH, EPCI e-Symposium Abstract: Our environment is changing and everything is becoming “electronified”. Our glasses, our hand gloves, shirts, shoes etc., can be connected already today with our smartphones and can send commands to the machinery surrounding us. We want this comfort, and we are all looking forward to having Smart Homes. Chip manufacturers have introduced a new generation of processors to the market, which already have the built-in RF module in the chip itself. This solution is amazing, has low current requirement, and can operate with just 40 nA@3V in Sleep Mode. In case of Continue Reading
Capacitors and Resistors with Extended Operating Temperature Range for GaN Applications– Development and Space Evaluation (10/20/2017) - source: Alter Technology, ESA ESTEC, EPCI e-Symposium Abstract: During the last decade, a growing number of applications demanding higher power electrical consumption have emerged in some industrial sectors such as in the military, automotive or space ones. Consequently, electrical components with higher temperature range and rating voltage operation are needed. In addition, the good thermal characteristics of Silicon Carbide (SiC) and Gallium Nitride (GaN) allow the fabrication of devices suitable for working in extreme conditions. In order to satisfy these demands, an evaluation of selected capacitors and resistors for future space SiC & GaN applications is presented. They have extended Continue Reading
Carbon Nanotubes Ammonia Sensor Printed by Aerosol Jet System (10/20/2017) - source: RICE, FEE, University of West Bohemia in Pilsen, EPCI e-Symposium Abstract: This article deals with ammonia gas sensor based on carbon nanotubes. Active layer is deposited on a flexible substrate by new deposition technique called Aerosol Jet. The deposition technique remove deficiency of today’s common used deposition technique, where it is very difficult to deposit a thin homogeneous layer of carbon nanotubes. The final sensor was tested against to 50 ppm ammonia concentration at the room temperature. The electric parameter changes of the sensor during the testing was measured by AC LRC bridge and achieved results are discussed. Title:Carbon Continue Reading
Embroidered textile antennas based on hybrid sewing thread (10/20/2017) - source: RICE, FEE, University of West Bohemia in Pilsen, EPCI e-Symposium Abstract: This paper presents a research focused on textile antennas which are made embroidered from a novel hybrid conductive sewing thread. Thanks to embroidery, which has been recognized as one of the most promising manufacturing techniques for integrating antennas into clothing, the antennas are more robust, more flexible, fully washable and comfortable for wearing. These properties are important due to the increasing demand for smart textiles products in sport wear, medical or military segment. The objective of this research is to develop a wearable textile antenna optimized to the Continue Reading
Printed and Embroidered Electronic Passive Components (10/20/2017) - source: RICE, FEE, University of West Bohemia in Pilsen, EPCI e-Symposium Abstract: Wearable electronics and smart textiles is rapidly developing area currently. An integration of electronic components and systems directly on/into textile substrates leads to the development of promising new technologies among which it is possible to include printing of passive electronic components and/or embroidering of passive electronic components directly onto textile substrates using conductive threads. The paper deals with comparing of the electrical parameters of printed and embroidered planar passive electronic components. Different types of planar inductors and interdigital capacitors were designed and realized. Their basic electrical parameters such Continue Reading
Heraeus Next Generation of Polymer Capacitors: Boosting Performance of Electrolytic Capacitors with Conductive Polymer Dispersions (10/20/2017) - source: Heraeus, EPCI e-Symposium Abstract: The major use of polymer aluminum and tantalum capacitors is for low voltage consumer electronics. The development of conductive polymer dispersions has extended the voltage range of polymer capacitors up to 125 V in the last years and opened the door for high reliability applications like automotive. We present the next generation of polymer aluminum capacitors reaching rated voltage of 400 V. Life-test, frequency and low temperature characteristics are reported. Title: Next Generation of Polymer Capacitors: Boosting Performance of Electrolytic Capacitors with Conductive Polymer Dispersions Author(s): Udo Merker1, Klaus Wussow1, Katrin Asteman1, Wise Chow2, Willie Continue Reading