The TSD1N21A829MLV0JJT from TAIYO YUDEN (U.S.A.) Inc is a Diplexer with Frequency f1 617 to 960 MHz, Frequency f2 1427 to 5925 MHz, Frequency 617 to 960 MHz / 1427 to 5925 MHz, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, Ceramic. More details for TSD1N21A829MLV0JJT can be seen below.