The SMV1237 Series from Skyworks Solutions is a Varactor Diode with Capacitance 46.89 pF@Vr=1 V, 20.83 pF@Vr=4 V, 11.61 pF@Vr=10 V, 9.84 pF@ Vr=30 V, Forward Continous Currenrt 20 mA, Reverse Voltage 15 V@Ir = 10 µA (V) Min., Operating Temperature -55 to 125 Degree C, Resistance 0.25 Ohms. Tags: Surface Mount. More details for SMV1237 Series can be seen below.