The DPX205850DT-4155A1 from TDK is a Diplexer with Frequency f1 700 MHz to 1.99 GHz, Frequency f2 2.4 to 5.85 GHz, Attenuation 12 to 28 dB, Attenuation f1 12 to 28 dB, Attenuation f2 12 to 21 dB. Tags: Surface Mount. More details for DPX205850DT-4155A1 can be seen below.