The HMC305SLP4E from Analog Devices is a RF Variable Attenuator with Frequency 0.4 to 7 GHz, Attenuation Range 0.5 to 15.5 dB, Attenuation Step 0.5 dB, Attenuation Accuracy ±0.25 dB, Power 28 dBm (P0.1dB). Tags: Surface Mount, Digital. More details for HMC305SLP4E can be seen below.