Assuring PCB reliability by building in additional tolerances

High reliability or HiRel is the nomenclature or class given to printed circuit boards (PCBs) designed and manufactured for mil/aero or medical electronics systems and equipment, and on occasion, for special OEM gear. However, in some cases, vital steps in high reliability PCB design, fabrication, and assembly are overlooked for a variety of reasons — inadvertently, to save time to …

Taking on the 0.3 mm ultra-fine pitch device challenge in PCB design

A significant majority of the electronics OEM market is rapidly moving toward increasingly greater product miniaturization along with higher levels of functional integration. The best examples are the new crops of smart phones and mobile/wireless devices. And whether the industry is ready or not, 0.3 millimeter (mm) ultra-fine pitch micro CSPs (chipscale packages), micro BGAs (ball grid arrays), and …