The DBTC-6-4-75+ from Mini Circuits is a Directional Coupler with Frequency 5 MHz to 1.25 GHz, Coupling 6.72 to 7.75 dB, Directivity 11.03 to 16.04 dB, Power 0.5 to 1 W, Average Power 0.5 to 1 W. Tags: Surface Mount. More details for DBTC-6-4-75+ can be seen below.