The DBTC-10-4-75X+ from Mini Circuits is a Directional Coupler with Frequency 5 MHz to 1 GHz, Coupling 10.21 to 10.7 dB, Directivity 18.57 to 21.95 dB, Power 0.5 to 1 W, Average Power 0.5 to 1 W. Tags: Surface Mount. More details for DBTC-10-4-75X+ can be seen below.