The MTCA1807NWB1 from Yantel Corporation is a RF Variable Attenuator with Frequency DC to 18 GHz, Attenuation Range 7 dB, Attenuation Accuracy ±0.5 dB, Power 0.2 W, Operating Temperature -55 to 150 Degree C. Tags: Surface Mount, Temperature Variable. More details for MTCA1807NWB1 can be seen below.