The SKYA21029 from Skyworks Solutions is a RF Switch with Frequency 0.1 to 3.8 GHz, Insertion Loss 0.40 to 0.8 dB, Isolation 20 to 42 dB, Power 35 to 37.5 dBm, IIP3 70 dBm. Tags: Surface Mount, Antenna Tuning Switch. More details for SKYA21029 can be seen below.