The EDC14-553-D+ from Mini Circuits is a Directional Coupler with Frequency 22 to 55 GHz, Coupling 12.7 to 14.4 dB, Directivity 7 to 11 dB, Average Power 0.79 to 1.5 W, Insertion Loss 0.7 to 1 dB. Tags: Die. More details for EDC14-553-D+ can be seen below.