The APH668 from Northrop Grumman Corporation is a RF Amplifier with Frequency 71 to 76 GHz, Gain 16.5 to 19 dB (Linear), Saturated Power 0.502 to 0.631 W, PAE 0.22, Input Return Loss 15 to 20 dB. Tags: Die, Power Amplifier. More details for APH668 can be seen below.