COTS in space: the 100 percent testing risk

source: Intelligent Aerospace article November 13, 2017  By Dan Friedlander, Retired following 44 years in component engineering The current European Space Agency (ESA) and National Aeronautics and Space Administration (NASA) approach to the use of Electrical, Electronic, and Electromechanical (EEE) commercial off-the-shelf (COTS) components in space applications continues to rely on heavy testing requirements. The official methodology […]

Ohmcraft High Voltage Resistors Control Electrical Current in Implantable Defibrillators

source: EINpresswire news ROCHESTER, NY, UNITED STATES, October 23, 2017 /EINPresswire.com/ — Designed to correct irregular heart patterns, implantable cardioverter defibrillators (ICDs) are small devices placed inside the chest to monitor heart rate, and respond accordingly in the event of arrhythmia. When an abnormal heart rate is detected, the ICD will automatically defibrillate by delivering […]

Temperature Dependence of Leakage Current Degradation of Tantalum Capacitors at High Electric Field

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 […]

Kinetics of Moisture Sorption and Reverse Bias Degradation in Chip Tantalum Capacitors

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 […]

Capacitors and Resistors with Extended Operating Temperature Range for GaN Applications– Development and Space Evaluation

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 […]

Supercapacitor Degradation and Reliability

source: Brno University of Technology CEITEC, EPCI e-Symposium Abstract: Degradation of supercapacitor (SC) is analyzed by accelerated aging test. Evolution of SC parameters is determined before the aging test, and during up to 8 x 105 cycles of both 75% and 100% energy cycling. Capacitance fading, equivalent series resistance (ESR) increase, and leakage current trend […]

Assessment of Supercapacitor’s Quality by Means of Low Frequency Noise

source: Gdańsk University of Technology, EPCI e-Symposium Abstract: Low frequency noise is a well-known tool for quality and reliability assessment of electronic devices. This phenomenon is observed in different electrochemical devices as well (e.g., smart windows, electrochemical corrosion processes). Thus, we can assume that the same tool can be used to asses quality of supercapacitors. […]

Commercial vs. Hi-Rel Tantalum Capacitors in Space Applications

source: Kemet Electronics, EPCI e-Symposium Abstract: There are several grades of electronic components that depends on their long-term reliability and resistance to harsh environments, including commercial, automotive, high reliability COTS, and MIL. This paper describes the differences in qualification and testing requirements for different grades of Tantalum capacitors and how these differences affect the materials, […]

Parametric Failures in COTS Capacitors

source: ASRC Federal Space and Defense (NASA,USA), EPCI e-Symposium Abstract: Insertion of COTS components into hi-rel systems require extensive environmental testing of the parts that often results in parametric failures.  Based on experience with commercial and hi-rel PME and BME ceramic capacitors and polymer and MnO2 cathode tantalum capacitors, this presentation discusses two major reasons […]

Lessons learnt at ESA from failure with commercial product/process in space applications

source: ESA, EPCI e-Symposium Abstract: The presented presentation slides are prepared based on ESA long term experience with passive components use in space environment. Several failures and investigations during the last years linked with the use of commercial components or commercial manufacturing process are reported. We will share some lesson learn for the use of […]