NXP – ESD protection diodes optimised for NFC systems

The PESD18VF1Bx and PESD24VF1Bx from NXP Semiconductors are ultra-low capacitance, bi-directional ESD protection diodes which safeguard devices containing an NFC interface from damage caused by ESD strikes and other transient voltage events. 

Some NFC designs integrate the antenna into the host product’s battery or battery cover, which provides an entry point for ESD strikes which could damage the NFC controller IC. Housed in a leadless surface-mount package, a PESD18VF1Bx or PESD24VF1Bx diode protects one signal line from the risk of such damage up to a maximum voltage of 10kV.

The diodes’ very low capacitance helps to make it easy to design the NFC antenna- matching circuit.


  • Up to ±10kV ESD protection according to IEC 61000-4-2
  • Very low intermodulation distortion
  • PESD18VF1BL and PESD24VF1BL are AEC-Q101 qualified


  • NFC antenna protection
  • Protection of high-speed data lines
Part NumberMaximum Reverse Stand-off Voltage (V)Typical Diode Capacitance (pF)Maximum Diode Capacitance (pF)PackageSize (mm)
PESD18VF1BL180.350.5DFN1006-21 x 0.6 x 0.48
PESD18VF1BSF180.30.45DSN0603-20.6 x 0.3 x 0.3
PESD24VF1BL240.350.5DFN1006-21 x 0.6 x 0.48
PESD24VF1BSF240.30.45DSN0603-20.6 x 0.3 x 0.3