The DPX1025A from CTS Electronic Components is a Diplexer with Frequency f1 1.71 to 2.18 GHz, Frequency f2 1.85 to 1.99 GHz, Power 2 W, Peak Power 20 W, Attenuation 24 to 30 dB. Tags: Surface Mount, Ceramic, Ceramic. More details for DPX1025A can be seen below.