The BB187LX from NXP Semiconductors is a Varactor Diode with Capacitance 29.3 to 34.2 pF, Capacitance Ratio 12 - 16, Forward Continous Currenrt 20 mA, Peak reverse voltage 32 V, Reverse Voltage 32 V. Tags: surface mounted. More details for BB187LX can be seen below.