Silicon Microstructures SM5420 Low Cost SO-8 Packaged Pressure Sensors utilize SMI’s SM5108 micromachined, piezoresistive pressure sensing chip that has been optimized to provide extremely high accuracy for a package of this size. This accuracy is achieved through careful resistor placement and mechanical configuration along with advanced MEMS processing. The SM5420 is designed for high volume, cost sensitive applications, such as consumer tire pressure gauges or automotive tire pressure monitoring. The SM5420 is available as an absolute pressure sensor in full-scale ranges of 15, 30, 60, and 100PSI. The SM5420 series is designed to be surface-mounted on ceramic or PC board substrates by high-volume OEM manufacturers.