The VRFC0006-BD from VIPER RF is a RF Variable Attenuator with Frequency DC to 13 GHz, Attenuation Range 0.5 to 31.5 dB, Insertion Loss -7.7 to -4.5 dB, Input Return Loss -11.5 to -9 dB, Output Return Loss -12.5 to -10 dB. Tags: Die, Digital. More details for VRFC0006-BD can be seen below.