The 2SMC4NK from Renaissance Electronics Corporation is a RF & Microwave Isolator with Frequency 1.8 to 1.88 GHz, Average Power Forward 50 W, Average Power Reverse 70 W, Peak Power Forward 0.5 kW, Insertion Loss 0.35 dB. Tags: Surface Mount, Surface Mount Isolator. More details for 2SMC4NK can be seen below.