The SKYA21012 from Skyworks Solutions is a RF Switch with Frequency 0.02 to 6 GHz, Insertion Loss 0.35 to 0.65 dB, Isolation 22 to 26 dB, Power 25 to 32 dBm, Power 0.31 to 1.6 W. Tags: Surface Mount, Antenna Tuning Switch. More details for SKYA21012 can be seen below.