The MGV125-20-P55 from MACOM is a Varactor Diode with Capacitance 0.13 pF, Capacitance Ratio 2.7 to 6.6, Forward Continous Currenrt 100 mA, Power Dissipation 100 mW, Q factor 4000. Tags: Surface Mount, Ceramic. More details for MGV125-20-P55 can be seen below.