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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 get the project out the door, or just to save money.

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