The SFQ-40350313-1919SF-N1 from ERAVANT is a Waveguide Mixer with RF Frequency 40 to 50 GHz, LO Frequency 40 to 50 GHz, IF Frequency DC to 5 GHz, Conversion Loss 13 to 15 dB, LO Drive Level 16 to 20 dBm. More details for SFQ-40350313-1919SF-N1 can be seen below.