The AAT2077B2 from ASB Inc. is a RF Variable Attenuator with Frequency DC to 1.2 GHz, Attenuation Range 21 dB, Attenuation Accuracy ±0.5 dB, Power 0.15 to 0.63 W, P1dB 21 to 26 dBm. Tags: Surface Mount, Digital. More details for AAT2077B2 can be seen below.