The TLLF-DC-50M-L4 from Talent Microwave Inc is a Low Pass RF Filter with Frequency DC to 50 MHz, Insertion Loss 2.0 dB, Rejection 60 dB, Upper Rejection >60dB@70MHz, Power 2 W. Tags: Module with Connector. More details for TLLF-DC-50M-L4 can be seen below.