NXP PESD2CANFD36VT-QR: High-Performance ESD Protection for CAN FD Interfaces

The rapid evolution of automotive and industrial communication networks demands robust protection solutions to safeguard sensitive electronic components. Controller Area Network with Flexible Data-Rate (CAN FD) interfaces, with their higher data rates and larger payloads, are particularly vulnerable to transient voltage events such as Electrostatic Discharge (ESD). The NXP PESD2CANFD36VT-QR is a state-of-the-art protection device engineered specifically to meet these stringent requirements, offering superior performance and reliability.

This device is a bidirectional TVS diode array in an ultra-compact DSN0603-2 (SOD962) package, making it ideal for space-constrained PCB designs. Its primary function is to clamp hazardous voltage transients before they can damage the more vulnerable CAN transceiver IC. The PESD2CANFD36VT-QR is characterized by an extremely low dynamic resistance (RDYN) and excellent clamping capability, ensuring that the voltage seen by the protected IC is kept to an absolute minimum during an ESD strike.

A key advantage of this solution is its low capacitance, typically below 2.5 pF per channel. This is a critical parameter for CAN FD systems, as high capacitance can distort the communication signals and degrade signal integrity, especially at the higher data rates (up to 5 Mbps in standard CAN FD). The low capacitive loading of this protector ensures minimal impact on the differential signals, preserving bus performance.

The device is certified to withstand the most severe ESD events, achieving IEC 61000-4-2 Level 4 protection (±30 kV air and ±30 kV contact discharge). This provides designers with the confidence that their systems can endure real-world ESD threats encountered during manufacturing, assembly, and end-use. Furthermore, its AEC-Q101 qualification confirms its suitability for the demanding environmental conditions of automotive applications.

In application, the PESD2CANFD36VT-QR is placed in parallel on the CAN_H and CAN_L lines, as close as possible to the connector or the point of potential ESD entry. Its integration of two diodes in a single package simplifies board layout and reduces the bill of materials (BOM) compared to using discrete TVS diodes.

ICGOODFIND: The NXP PESD2CANFD36VT-QR stands out as an optimized and robust protection solution for CAN FD networks. Its combination of low capacitance, superior clamping performance, and automotive-grade reliability makes it an essential component for ensuring the longevity and integrity of modern high-speed communication interfaces in vehicles and industrial systems.

Keywords: ESD Protection, CAN FD, TVS Diode, Low Capacitance, AEC-Q101.