The Epson SMD Crystal Resonators 40MHz ±10ppm TSX-3225 RoHS X1E000021017700 is a small form-factor, surface-mount device for use in oscillator circuits. It has a 40MHz operating frequency that is accurate to within 10 parts per million (ppm) and is compliant with the Restriction of Hazardous Substances Directive (RoHS). The device is a frequency-trimming, RoHS-compliant, three-terminal SMD device that enables high-precision frequency trimming with a 3.2mm x 2.5mm housing. The crystal resonator is suitable for a wide variety of applications, including clock oscillator circuits, audio applications, pulse generation circuits, and radio frequency (RF) communication systems.