The DPX165900DT-8025A1 from TDK is a Diplexer with Frequency f1 2.4 to 2.5 GHz, Frequency f2 5.1 to 5.9 GHz, Attenuation 10 to 30.8 dB, Attenuation f1 18 to 25.9 dB, Attenuation f2 10 to 30.8 dB. Tags: Surface Mount. More details for DPX165900DT-8025A1 can be seen below.