The NJG1608KB2 from Nisshinbo Micro Devices Inc. is a RF Switch with Frequency 0.1 to 6 GHz, Insertion Loss 0.30 to 0.80 dB, Isolation 16 to 30 dB, P1dB 27 dBm, P1dB 0.5 W. Tags: Surface Mount, Solid State. More details for NJG1608KB2 can be seen below.