The DC10-03M50MSF from Corech Microwave is a Directional Coupler with Frequency 0.0003 to 0.05 GHz, Coupling 10 dB, Coupling Variation ±0.5 dB (Balance), Directivity 30 dB, Average Power 1 W (CW). Tags: Module with Connectors. More details for DC10-03M50MSF can be seen below.