The SKY13523-639LF from Skyworks Solutions is a RF Switch with Frequency 700 MHz to 3 GHz, Insertion Loss 0.65 to 1 dB, Isolation 45 to 50 dB, P1dB 32 dBm, P1dB 1.6 W. Tags: Surface Mount, Solid State. More details for SKY13523-639LF can be seen below.