COTS in space: Addressing obsolescence, part I

source: Intelligent aerospace news January 19, 2018 By Dan Friedlander, Retired following 44 years in component engineering A component becomes obsolete when the original component manufacturer stops marketing it. Electrical, electronic, and electromechanical (EEE) components obsolescence hits the military, space, and commercial market. In the military, massive EEE components obsolescence occurred due in part to manufacturers’ decisions to […]

AVX Self-Balancing Supercapacitor Reliability Testing Performance

source: Power systems design news Supercapacitors are increasing in popularity amongst board-level components. In turn, there is now greater demand for supercapacitor reliability testing data, as sub-ppm component failure rates are critical for minimizing and eliminating PCB rework. Author: Eric DeRose, Field Applications Engineer; Bob Knopsnyder, Senior Development Engineer; and Bharat Rawal, Contractor/Retired Manager, BestCap […]

KEMET Receives Defense Logistics Agency Approval for MIL-PRF-32535 “M” and “T” Levels of C0G and BP dielectrics

source: Kemet news GREENVILLE, S.C., Dec. 18, 2017 (GLOBE NEWSWIRE) — KEMET Corporation (NYSE:KEM), a leading global supplier of electronic components, today announced that the Defense Logistics Agency (DLA) has accepted KEMET’s qualification of C0G and BP dielectrics to MIL-PRF-32535 “M” and “T” levels making them the first base metal electrode (BME) MLCCs qualified for […]

COTS in space: hasty generalizations

source: Intelligent Aerospace article November 30, 2017 by Dan Friedlander Multiple articles I have authored on commercial off-the-shelf components in space applications have been met with more and more indications of fallacious, unpersuasive arguments. Some of the arguments are rooted in multi-year convictions, others are rooted in misunderstanding and/or misinterpretation of ambiguous, confusing, on-going official mixed […]

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 […]

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 […]

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, […]

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 […]