The electronic part X32258MOB4SI is a 8MHz SMD Crystal Resonator from Yangxing, which is 12pF 150O ±10ppm ±30ppm -40?~+85?, and ROHS compliant. This part is a surface mount device with four pins, and is used to provide frequency stability for electronic systems. It is designed to operate within a wide temperature range, with less than 10 parts-per-million variation in frequency and an accuracy of ± 30 parts-per-million.