The DPX252690DT-5121C1 from TDK is a Diplexer with Frequency f1 698 to 960 MHz, Frequency f2 1.71 to 2.69 GHz, Attenuation 5 to 28 dB, Attenuation f1 23 to 26 dB, Attenuation f2 5 to 28 dB. Tags: Surface Mount. More details for DPX252690DT-5121C1 can be seen below.