The ZLPF1-M0-12G-561 from COM-MW is a Low Pass RF Filter with Frequency DC to 12 GHz, Stopband Frequency 13.8 to 18 GHz, Insertion Loss 2 dB, Rejection 40 dB @ 13.8 to 18 GHz, Power 5 W. Tags: Surface Mount. More details for ZLPF1-M0-12G-561 can be seen below.