The XC2100A-20S from TTM Technologies is a Directional Coupler with Frequency 2 to 2.3 GHz, Coupling 20 to 20.1 dB, Coupling Variation ±0.50 to 0.60 dB, Directivity 23 to 25 dB, Power 120 to 150 W. Tags: Surface Mount. More details for XC2100A-20S can be seen below.