Nexperia PESD3V3L1UB,115, Uni-Directional ESD Protection Diode, 2-Pin SOD-523

Low capacitance unidirectional ElectroStatic Discharge (ESD) protection diodes in small Surface-Mounted Device (SMD) plastic packages designed to protect one signal line from the damage caused by ESD and other transients.

Ultra low diode capacitance down to Cd = 0.4 pF typ.
ESD protection of ultra high-speed applications
Single line, multiline arrays and rail-to-rail configurations
Maximum PCB design flexibility
Ultra low leakage current down to... IRM = 5 nA
Minimum PCB area requirements
Ultra small packages
Very low clamping voltages compared to varistors