This S3230000101040 SMD Crystal Resonator from JGHC is designed for use in oscillator circuits and other applications that require a precisely tuned resonant frequency. It has a frequency of 30MHz ± 10ppm, comes in an SMD-3225_4P package, and is RoHS compliant. It is constructed from two small quartz crystals that vibrate at a specific frequency when an electrical signal passes through them, allowing it to act as a filter that can generate a desired signal. The resonator also has a high stability against environmental conditions, such as temperature, and voltage drift.