The TCD-13-4-75+ from Mini Circuits is a Directional Coupler with Frequency 5 MHz to 1 GHz, Coupling 12.56 to 13.23 dB, Directivity 11.88 to 22.93 dB, Power 0.5 to 1 W, Average Power 0.5 to 1 W. Tags: Surface Mount. More details for TCD-13-4-75+ can be seen below.