Ultra-low capacitance ESD protection diodes shield automotive data interfaces

Nexperia has extended its portfolio of ultra-low capacitance ESD protection diodes created to protect high-speed data lines in interfaces such as USB, HDMI, high-speed video links and ethernet in automotive infotainment applications.

These latest additions include PESD18VF1BLS-Q, PESD24VF1BLS-Q, PESD30VF1BLS-Q and PESD32VF1BLS-Q in the DFN1006BD-2 package, which allows optical inspection in automotive production lines utilising side wettable flanks. Also, PESD18VF1BBL-Q, PESD24VF1BBL-Q and PESD30VF1BBL-Q are offered in the compact DFN1006-2 package. All variants are in leadless packages to enhance electrical performance and signal integrity while allowing miniaturisation in automotive designs.

ESD diodes protect critical electronic systems and subsystems by dissipating the high energy of electrostatic discharges. This protects vital SoCs and other components from getting damaged during an ESD event. Adding extra components to a high-speed data line can worsen the signal integrity of the transferred data. Therefore, selecting the correct components that protect the system but do not hamper the signal transmission is critical to modern high-speed automotive systems. The company has a long-standing expertise in being the market leader and offering the best ESD protection solutions. Keeping the requirements of design engineers and the automotive systems in mind, the company is providing this portfolio with the best-in-class signal integrity performance enabled by the ultra-low device capacitance (as low as a typical 0.28pF) combined with the higher standoff voltage of 18-32V for placement closer to the connector. For maximum design flexibility, these diodes are supplied with and without side wettable flanks, with the side wettable flanks enabling AOI.

These AEC-Q101 automotive-qualified devices display extremely deep snapback behaviour combined with a low dynamic resistance of 0.8-Ohm for improved system-level robustness and clamping performance in high-speed data interfaces.