Nexperia offers a series of 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.
These devices are intended for use in space- constrained designs, such as consumer mobile products, in which an NFC antenna is integrated into the host product’s battery or battery cover. This provides an entry point for ESD strikes which could damage the NFC controller IC.
The PESD24VF1BSF and PESD24VF1BL have a maximum reverse stand-off voltage of 24V. The PESD18VF1BSF and PESD18VF1BL have an 18V rating.
The PESD24VF1BSF and PESD18VF1BSF are housed in a DSN0603-2 package measuring 0.6mm x 0.3mm x 0.3mm. The PESD24VF1BL and PESD18VF1BL are in a DFN1006-2 package with a 1.0mm x 0.6mm x 0.5mm outline.
Each diode protects one signal line from an ESD contact discharge of up to ±10kV, a rating which is consistent with the provisions of the IEC 61000-4-2 standard. The devices’ low capacitance helps to make it easy to design the NFC antenna-matching circuit. In the smaller PESD18VF1BSF and PESD24VF1BSF diodes, maximum diode capacitance is 0.45pF.
In addition, there is a very small voltage dependency of the diode capacitance, avoiding intermodulation distortion.
- 1A maximum peak pulse current
- Junction-temperature range: -45°C to 125°C
- 1nA reverse leakage current
- NFC antenna protection
- Protection of high-speed and standard data lines with high signal levels