The SKY12355-337LF from Skyworks Solutions is a RF Variable Attenuator with Frequency 350 to 4000 MHz, Attenuation Range 18 dB, Attenuation Accuracy 17.9 to 18.9 dB, Power 0.125 to 0.63 W, P1dB 28 dBm. Tags: Surface Mount, Digital. More details for SKY12355-337LF can be seen below.