The CER0396A from CTS Electronic Components is a RF Duplexer with Frequency 824 to 880 MHz, Band 1 869 to 880 MHz, Band 2 824 to 835 MHz, Insertion Loss 3.2 dB, Operating temperature -40 to 85 Degree C. Tags: Ceramic, Surface Mount. More details for CER0396A can be seen below.