The KDS 1C208000CE0R is an 8MHz ±30 ppb SMD-3225_4P RoHS compliant Crystal Resonator. It's designed for use in SMD (surface mount devices), so it's very small and capable of being mounted on a circuit board. The frequency range is 8MHz ±30 ppb accuracy, giving it very precise accuracy for use in high frequency applications. The package is 3325 size, with 4 pins, allowing for easy circuit board mounting. The product is RoHS certified, meaning it is compliant with environmental regulations and should not pose any risk to the environment.