The NJG1801K75 from Nisshinbo Micro Devices Inc. is a RF Switch with Frequency 0.05 to 8.5 GHz, Insertion Loss 0.35 to 0.85 dB, Isolation 16 to 30 dB, P1dB 31 dBm, P1dB 1.25 W. Tags: Surface Mount, Solid State. More details for NJG1801K75 can be seen below.