The TSB1N21D4G15LV0HWT from TAIYO YUDEN (U.S.A.) Inc is a Band Pass Filter with Frequency 3300 to 5000 MHz, Bandwidth 1700 MHz, Center Frequency 4150 MHz, Operating_Temperature -40 to 85 Degree C. Tags: Surface Mount, Ceramic Filter. More details for TSB1N21D4G15LV0HWT can be seen below.