MS11U2G59-RX41NC with SMD SAW Filters ROHS is a small form factor surface mount device (SMD) manufactured by Microgate. It is a SAW filter, which stands for Surface Acoustic Wave—a filter that uses surface acoustic waves to filter unwanted signal frequencies from desired frequencies. It is a low insertion loss, pass-band filter designed for use at the Global System for Mobile (GSM) cellular frequency range of 890 MHz – 915 MHz. It features a wide operating temperature range of -40 °C to +85 °C making it suitable for harsh industrial settings. The RoHS compliant devices are available in a variety of sizes and shapes for integration into a wide range of products. They are suitable for use in many application areas, including wireless communication, industrial, instrumentation boards, medical, and automotive.