The SYBD-16-53HP+ from Mini Circuits is a Bi-Directional Coupler with Frequency 2.7 to 5 GHz, Coupling 15.90 to 18.87 dB, Average Power 225 W, Power 20 to 25 W, Insertion Loss 0.12 to 0.24 dB. Tags: Surface Mount. More details for SYBD-16-53HP+ can be seen below.