The DC10-177212SF from Corech Microwave is a Directional Coupler with Frequency 17.7 to 21.2 GHz, Coupling 10 dB, Coupling Variation ±0.5 dB (Balance), Directivity 14 dB, Average Power 20 W (CW). Tags: Module with Connectors. More details for DC10-177212SF can be seen below.