The BBY58-06W from Infineon Technologies is a Varactor Diode with Capacitance 18.3 pF (CT1), 12.35 pF(CT2), Capacitance Ratio 2.15 (1/3V), Forward Continous Currenrt 20.0 mA, Peak reverse voltage 10 V, Reverse Voltage 10 V. Tags: Surface Mount. More details for BBY58-06W can be seen below.