The DPX202750DT-4058A1 from TDK is a Diplexer with Frequency f1 650 to 950 MHz, Frequency f2 1.427 to 2.75 GHz, Attenuation 11 to 15.4 dB, Attenuation f1 11 to 15.4 dB, Attenuation f2 11 to 13.2 dB. Tags: Surface Mount. More details for DPX202750DT-4058A1 can be seen below.