Abstract
The worldwide demand for a Tire Pressure Monitoring System (TPMS) has grown due to the dangers posed by widespread tire safety abuse. The National Highway Traffic Safety Administration (NHTSA) estimates that 23,000 accidents and 535 fatalities per year involves flat tires or blowout both of which can be the result of improperly inflated tires. To further enhance vehicular safety, US government and Europe mandated the use of TPMS for all passenger cars by year 2008 and 2012 respectively. This prepare illustrates the packaging of a low cost yet complex TPMS device that involves MEMS (pressure sensing and accelerometer devices) and Controller chips integrated as one in a low cost Pre-molded Leadframe Cavity Package. Advanced solutions to resolve process challenges and material difficulties have paved the way to successfully qualify the product meeting all the intensive automotive requirements.
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