The BB844 from Infineon Technologies is a Varactor Diode with Capacitance 43.75 pF (CT1), 11.7 pF(CT2), Capacitance Ratio 3.8 (2/8V), Forward Continous Currenrt 50.0 mA, Peak reverse voltage 18 V, Reverse Voltage 18 V. Tags: Surface Mount. More details for BB844 can be seen below.