The TCAF-4-N09 from Spectrum Control is a RF Variable Attenuator with Frequency DC to 12 GHz, Attenuation Range 4 dB, Attenuation Accuracy ±0.5 to ±0.75 dB, Power 2 W, Operating Temperature -55 to 150 Degree C. Tags: Surface Mount, Temperature Variable. More details for TCAF-4-N09 can be seen below.