electronicsThe X503212MSB4SI is an SMD Crystal Resonator manufactured by Yangxing electronics. It is a 12MHz ±10ppm SMD-5032, 4-pin RoHS compliant device. It is a passive electronic component and consists of an oscillating quartz crystal die within a metal enclosure. This component is used to provide an accurate reference frequency for applications including radio systems, micro controllers, digital clocks, and delay lines. It features wide frequency range, low ESR, excellent stability, and low aging.