The TSC1N18D1G68NC0AAT from TAIYO YUDEN (U.S.A.) Inc is a Directional Coupler with Frequency 698 to 2690 MHz, Coupling 21.5 to 29 dB, Average Power 30 dBm, Insertion Loss 0.22 to 0.30 dB, Isolation 35 to 40 dB. Tags: Surface Mount. More details for TSC1N18D1G68NC0AAT can be seen below.