The BAP55LX from NXP Semiconductors is a RF PIN Diode with Frequency Up to 3 GHz, Insertion Loss 0.05 to 0.26 dB, Isolation 12 to 19 dB, Forward Voltage 0.95 to 1.1 V, Forward Current 100 mA. Tags: Surface Mount. More details for BAP55LX can be seen below.