The Components for Military & Space Electronics (CMSE) Conference is being held in Los Angeles March 6th to March 9th 2016. This year KEMET is presenting two technical papers related to using capacitors in high reliability applications.
The training provided at this seminar is a must-have for engineers working in military, space, and harsh environment applications. The event showcases new technology and advancements in electronic components for military and space electronics.
The most comprehensive aspect of the conference is on the use of both military and COTS components. This year Leon Hamiter, the event’s key organizer, is presenting a paper comparing QML to COTS–a common discussion in the industry.
KEMET Papers at CMSE
Moisture and Electrolytic Capacitors
During Session 1 on March 8, Dr. Yuri Freeman will present a paper titled “Effects of Moisture on Performance and Reliability of Electrolytic Capacitors.”
Moisture is the most common cause for the failures in electronic components. These failures are related to moisture induced corrosion and delamination, ion migration and shunts, tin whicker growth, etc. All these failure mechanisms can take place in solid Tantalum capacitors with either inorganic cathode (Ta/MnO2 capacitors) or conductive polymer cathode (Ta/Polymer capacitors). At the same time absence of moisture due to the long-term exposure to dry air or vacuum in space can also cause parametric and catastrophic failures in these capacitors. These failures can occur with voltage applied during the capacitor testing and field application or even without voltage applied (field storage failures). The presentation describes the root causes of these failures and technological means and screening techniques to avoid them.
Reliability of BME Ceramics for Hi-Rel
Later in the day during Session 3, Dr. Abhijit Gurav will present a paper he co-authored with Wilson Hayworth, Richard Turner, and Scott Carson.
Requirements for ceramic capacitors for high-reliability electronics for military and aerospace are driving towards higher capacitance values in smaller case sizes which are difficult to achieve using conventional Precious-Metal Electrode (PME) ceramic capacitors. With the recent release of MIL-PRF-32535 specification, the qualification and application of BME capacitors in Hi-Rel military and space electronics is now possible. KEMET has made significant breakthroughs in this area using BME technology, and our paper will review recent advances in design and reliability test data of BME ceramic capacitors, and discuss their potential for Hi-Rel applications.
About the Presenters
While many contributed to the papers being presented at the CMSE conference, here is a short bio of the presenters. You might recognize these names from our post on KEMET’s contributions to a recent book.
Dr. Abhijit Gurav
Abhijit Gurav is the Vice President of Ceramic Technology at KEMET Electronics Corporation, Greenville, SC. He received B.S. and M.S. degrees in metallurgical engineering and materials science from the Indian Institute of Technology, Mumbai, India, and a Ph.D. degree in chemical engineering from the University of New Mexico, Albuquerque, NM. Prior to joining KEMET, he was a Postdoctoral Fellow with the NSF Center for Micro-Engineered Materials at UNM. He has 19 refereed publications and over 80 conference proceeding contributions. His areas of expertise include internal electrode and dielectric materials, processing and reliability of MLCCs, production and characterization of metal and ceramic powders, aerosols, nanomaterials, and electron microscopy.
Dr. Yuri Freeman
Yuri Freeman received MS as engineer-physicist and Ph.D. in Solid State Physics from Kharkov Polytechnic Institute in Ukraine. He worked as Principal Scientist in Russian capacitor industry and then at Vishay Sprague in Sanford, ME, and now at KEMET Electronics. Yuri’s work is focused on science and technology of Tantalum and Niobium-based capacitors. He published more than 30 peer-reviewed papers and received 42 patents in this field. As Adjunct Professor of Material Science Yuri is also teaching at Clemson University.