This is a surface mount frequency diplexer, manufactured by Murata, that is compliant with the Restriction of Hazardous Substances (RoHS) Directive. It is a dual-port device, meaning it operates by splitting a frequency signal into two separate bands, allowing both bands to communicate at the same time while remaining isolated. It has a passband insertion loss of 24dB~29dB 11dB~32dB, meaning that it has a relatively low amount of signal loss, and it operates in the MHz frequency range. This part is perfect for a wide variety of applications, such as cellular phones, Bluetooth, Wi-Fi, GPS, and satellite broadcasting.