The SQ25-1950D6SUA1 from KYOCERA AVX is a Quadplexer with Attenuation 20 to 57 dB, Frequency 1710.15 to 2169.75 MHz, Frequency1 1710.15 to 1784.85 MHz, Frequency2 1920.25 to 1979.75 MHz, Frequency3 1805.15 to 1879.85 MHz. Tags: Surface Mount. More details for SQ25-1950D6SUA1 can be seen below.