The SMVA1705-004LF from Skyworks Solutions is a Varactor Diode with Capacitance 2.8 pF, Forward Continous Currenrt 20 mA, Reverse Voltage 12V@Ir = 10 µA, Operating Temperature -55 to 125 Degree C, Resistance 0.32 Ohms. Tags: Surface Mount. More details for SMVA1705-004LF can be seen below.