The QLF-40000-50 from Qualwave is a Low Pass RF Filter with Frequency DC to 40 GHz, Stopband Frequency 70 GHz, Insertion Loss 2 dB, Upper Rejection 50 dB @ 70 GHz, VSWR 2.00:1. Tags: Module with Connector. More details for QLF-40000-50 can be seen below.