The SKY13550-667LF from Skyworks Solutions is a RF Switch with Frequency 0.4 to 3.8 GHz, Insertion Loss 0.35 to 1.6 dB, Isolation 17 to 43 dB, Power 31 dBm, Power 1.2 W. Tags: Surface Mount, Antenna Tuning Switch. More details for SKY13550-667LF can be seen below.