The SWF-57353340-12-H1 from ERAVANT is a Waveguide Filter with Frequency 57 GHz, Insertion Loss 0.8 dB, Operating Temperature -40 to 85 Degree C, Rejection 40 dB, Rejection Frequency DC to 53 GHz. Tags: High Pass. More details for SWF-57353340-12-H1 can be seen below.