The TSD1N18B1G79LS0FHT from TAIYO YUDEN (U.S.A.) Inc is a Diplexer with Frequency f1 1710 to 1920 MHz, Frequency f2 2496 to 2690 MHz, Attenuation 15 dB, Attenuation f1 15 dB, Attenuation f2 15 dB. Tags: Surface Mount, Ceramic. More details for TSD1N18B1G79LS0FHT can be seen below.