Vishay Precision Group Long-Term Stability and Its Limits

Throughout the meetings Vishay Foil Resistors' (VFR) Application Engineers participated in over the last three years, design engineers have asked many questions relating to precision resistors. Because most reliability test protocols document performance over only 1,000 hours of operation, with some extending to 10,000 hours maximum, the questions were heavily focused on what happens in operational life after these milestones have been reached.