The TSX-DFF-BF from PolyPhaser is a RF Surge Protector with Frequency 698 MHz to 2.7 GHz, Input Power 500 W, Insertion Loss 0.1 dB, Operating Temperature -50 to 85 Degree C, Storage Temperature -50 to 85 Degree C. Tags: Filter. More details for TSX-DFF-BF can be seen below.