The MGV100-20-P55 from MACOM is a Varactor Diode with Capacitance 0.13 pF, Capacitance Ratio 1.9 to 3.9, Forward Continous Currenrt 100 mA, Power Dissipation 100 mW, Q factor 4000. Tags: Surface Mount, Ceramic. More details for MGV100-20-P55 can be seen below.