The ZDC9-40M200-1000-1552 from COM-MW is a Bi-Directional Coupler with Frequency 200 MHz to 1 GHz, Coupling 39 to 41 dB, Power 300 W, Insertion Loss 0.35 dB, Directivity 20 dB. Tags: Surface Mount. More details for ZDC9-40M200-1000-1552 can be seen below.