The TSB1N21D4G70LV0DQT from TAIYO YUDEN (U.S.A.) Inc is a Band Pass Filter with Frequency 4400 to 5000 MHz, Bandwidth 600 MHz, Center Frequency 4700 MHz, Operating_Temperature -40 to 85 Degree C. Tags: Surface Mount, Ceramic Filter. More details for TSB1N21D4G70LV0DQT can be seen below.