The Suntek SK3410R120 with SMD,1.1X0.9 is an SAW (Surface Acoustic Wave) filter manufactured in compliance with the standards of the Restriction of Hazardous Substances Directive (RoHS). It is a passive, low-loss, wideband device designed for use in mobile communication devices. It is a small surface-mountable device, measuring just 1.1 x 0.9mm, and is capable of filtering frequencies from 700 MHz to 2000 MHz. It has excellent harmonic suppression and a very low group delay ripple, which makes it an ideal choice for modern RF devices. It is also known for its high selectivity, making it suitable for use in applications such as GPS receivers, base stations, and RF amplifiers.