The DPX165900DT-8125A1 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 32.5 dB, Attenuation f1 18 to 24.4 dB, Attenuation f2 10 to 32.5 dB. Tags: Surface Mount. More details for DPX165900DT-8125A1 can be seen below.