The BDCA1-10-40+ from Mini Circuits is a Bi-Directional Coupler with Frequency 1.6 to 4 GHz, Coupling 9.06 to 11.60 dB, Average Power 12 to 24 W, Power 12 to 24 W, Insertion Loss 0.73 to 1.09 dB. Tags: Surface Mount. More details for BDCA1-10-40+ can be seen below.