This article is written by Vladimir Azbel Ph.D., semiconductor process reliability engineer consultant, Israel, who investigates how welding of tantalum wire to tantalum capacitor pellet can be optimized to improve its quality and reliability. Introduction This study addresses the critical role of welding in the production of tantalum capacitors, focusing on the Heat-Affected Zone (HAZ) formed during the process. Optimizing welding parameters, especially contact...

Guided by machine learning, researchers at the Department of Energy’s Oak Ridge National Laboratory designed a record-setting carbonaceous supercapacitor material that stores four times more energy than the best commercial material. A supercapacitor made with the new material could store more energy — improving regenerative brakes, power electronics and auxiliary power supplies. “By combining a data-driven method and our research experience, we created a...

Knowles Precision Devices, recently released white paper based on Python Scipy.signal Toolbox to explore the theory behind poles and zeros and how these impact Q factor and filter performance. Quality factor, or Q factor, is a common shorthand figure of merit (FOM) for RF filters. It’s typically expressed as the ratio of stored versus lost energy per oscillation cycle. Steepness of skirts, selectivity, and insertion loss...

Bourns announced release of two new Data and Signal Surge Protective Device (SPD) families which significantly expands the company product line offering. The Bourns® Model 2510 and 2520 Series SPDs are DIN-Rail Data and Signal Surge Protective Devices. These protectors are designed to provide surge protection for 1-pair or 2-pair data lines with common reference potential in data, signal and communication systems. The Model...

Bourns releases a new Thermally Protected Surge Protective Device (TPMOV) family which will significantly expand our current product line offering. The Bourns® Model 1220 Series SPDs are PCB mounted TPMOVs which are surge suppressors with thermal protection designed to open in the event of overheating due to an abnormal overvoltage or Temporary Overvoltage (TOV) condition, interrupting any abnormal current that may be encountered up...