The AT35A-1011-A-I-18 from Aaren Technology Ltd is a DC Block with Frequency 10 MHz to 18 GHz, Insertion Loss 0.60 dB, Breakdown Voltage 50 V (Working Voltage), VSWR 1.25:1, Operating Temperature -55 to 165 Degree C. Tags: Inner DC Block. More details for AT35A-1011-A-I-18 can be seen below.