Nexperia USA Inc. PESD2CANFD24VT-QR

Overview

PESD2CANFD24VT-Q from Nexperia is a dual-channel automotive-grade ESD protection diode in SOT23 package, designed for bidirectional transient suppression on CAN-FD and CAN bus lines. It delivers 24 V reverse standoff voltage, 33 V clamping at 1 A, 6 pF capacitance, 23 kV IEC 61000-4-2 ESD rating, and operates up to 175 °C junction temperature - enabling robust in-vehicle network interface protection.

For engineers reviewing the PESD2CANFD24VT-Q datasheet, PESD2CANFD24VT-Q pinout, PESD2CANFD24VT-Q application, or PESD2CANFD24VT-Q equivalent, key selection criteria include its low clamping voltage under 8/20 µs surge, matched diode capacitance (<0.5% mismatch), common-cathode dual-diode topology, AEC-Q101 qualification, and suitability for high-speed differential bus protection with minimal signal distortion.

Technical Context

This device implements a dual common-cathode TVS diode architecture optimized for differential automotive data buses. Each channel provides symmetrical bidirectional clamping between line and common cathode (pin 3), with breakdown voltage of 25.5–35.5 V and dynamic resistance of 0.7 Ω under 10 A TLP stress.

It supports both IEC 61000-4-2 (23 kV contact) and ISO 10605 (23 kV, 150 pF/330 Ω) ESD immunity, while maintaining low 6 pF capacitance at 2.5 V reverse bias - critical for preserving signal integrity on CAN-FD links operating up to 5 Mbps.

Key Specifications

Pinout & Package

Package: SOT23 (TO-236AB), 3-terminal surface-mount plastic package (2.9 mm × 1.3 mm × 1.0 mm, 1.9 mm pitch).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel automotive ESD protection applications.

Compared with ESD224-B1-02 and NUF2221MUTAG, PESD2CANFD24VT-Q uniquely balances 24 V standoff, 6 pF capacitance, and 23 kV ESD rating - making it the only option validated for CAN-FD, FlexRay, and SENT on a single dual-diode die in SOT23.

Availability

PESD2CANFD24VT-Q is available at Aetrix Electronics and suitable for automotive ECU design, CAN-FD gateway development, and FlexRay-based powertrain control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PESD2CANFD24VT-Q includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.

This device belongs to Nexperia's Automotive ESD Protection portfolio, engineered specifically for robust, low-capacitance transient suppression on high-speed in-vehicle networks including CAN-FD, CAN, FlexRay, and SENT.

FAQ

What is the maximum recommended PCB trace length between PESD2CANFD24VT-Q and the protected CAN connector?

Per Nexperia application guidance, the trace length from the device to the connector should be ≤5 mm. Longer paths increase inductance, degrading clamping response and allowing voltage overshoot beyond the 33 V spec during fast ESD events. Ground return path must be equally short and low-inductance.

Can PESD2CANFD24VT-Q be used to protect RS-485 lines in industrial applications?

Yes - its 24 V VRWM, 6 pF capacitance, and 2.6 A peak pulse rating align with RS-485 requirements. However, industrial use requires validation against IEC 61000-4-4/5 surge levels, as AEC-Q101 qualification covers automotive-specific stress profiles, not full industrial immunity standards.

Does the common cathode (pin 3) require a dedicated low-impedance ground plane connection?

Yes - pin 3 must connect directly to a solid ground plane using ≥2 thermal vias within 2 mm. Shared or daisy-chained ground returns increase clamping voltage by up to 40% due to inductive voltage drop during 1 A+ ESD events, violating the 33 V specification.

How does capacitance matching affect CAN-FD signal integrity?

Capacitance mismatch >0.5% unbalances differential pair termination, increasing common-mode noise coupling and jitter. PESD2CANFD24VT-Q's ≤0.5% ΔCd/Cd ensures <0.5 mV common-mode shift at 5 Mbps, preserving eye diagram opening and meeting ISO 11898-2 compliance margins.