The SMV1770 Series from Skyworks Solutions is a Varactor Diode with Capacitance 17.8 pF@Vr=1 V, 5.5 pF@Vr=4 V, @Vr=10 V, Forward Continous Currenrt 20 mA, Reverse Voltage 12 V@Ir = 10 µA (V) Min., Operating Temperature -55 to 125 Degree C, Resistance 0.5 Ohms. Tags: Surface Mount. More details for SMV1770 Series can be seen below.