The KTCA3604N from Yantel Corporation is a RF Variable Attenuator with Frequency 16 to 22 GHz, Attenuation Range 4 dB, Attenuation Accuracy ±1 dB, Power 0.1 W, Operating Temperature -55 to 150 Degree C. Tags: Surface Mount, Temperature Variable. More details for KTCA3604N can be seen below.