Nexperia USA Inc. PESD2CANFD36VT-QR

Overview

PESD2CANFD36VT-Q from Nexperia is a dual-channel automotive-grade ESD protection diode in SOT23 package, designed for bidirectional transient suppression on CAN-FD and FlexRay bus lines. It features 36 V reverse standoff voltage, 45 V clamping at 1 A, 6 pF capacitance, 20 kV IEC 61000-4-2 ESD rating, and AEC-Q101 qualification - enabling robust protection in 24 V truck and passenger vehicle networks.

For engineers reviewing the PESD2CANFD36VT-Q datasheet, PESD2CANFD36VT-Q pinout, PESD2CANFD36VT-Q application, or PESD2CANFD36VT-Q equivalent, key selection criteria include low clamping voltage under 16 A TLP stress, matched diode capacitance (<0.5% mismatch), common-cathode dual-diode topology for differential bus protection, and validated performance across -55 °C to +150 °C ambient operation.

Technical Context

This device implements a dual common-cathode TVS diode architecture with symmetrical breakdown (37–47 V) and ultra-low dynamic resistance (1 Ω) to clamp fast transients while preserving signal integrity on high-speed automotive buses. Its 6 pF capacitance per channel ensures minimal distortion on CAN-FD (up to 5 Mbps) and SENT interfaces.

The SOT23-3 package enables compact PCB layout adjacent to connectors, with pin 3 serving as shared cathode reference and pins 1/2 protecting separate bus lines (e.g., CANH/CANL). Thermal design supports continuous operation up to 150 °C junction temperature under rated pulse conditions.

Key Specifications

Pinout & Package

SOT23-3 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pitch); thermally optimized for reflow soldering with exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESD224-BI and NUF2221MUTAG, PESD2CANFD36VT-Q uniquely balances 36 V standoff, 6 pF capacitance, and full ISO 10605/IEC 61000-4-2 validation - making it the only option qualified for both CAN-FD data integrity and 24 V truck network reliability without trade-offs.

Availability

PESD2CANFD36VT-Q is available at Aetrix Electronics and suitable for automotive CAN-FD bus protection, 24 V truck network interface design, and SENT sensor interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PESD2CANFD36VT-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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

This device belongs to Nexperia's Automotive ESD Protection portfolio, engineered specifically for high-speed in-vehicle networks including CAN-FD, FlexRay, and SENT - emphasizing low capacitance, precise clamping, and AEC-Q101 reliability.

FAQ

What is the maximum recommended PCB trace length between PESD2CANFD36VT-Q and the protected connector?

Maximum recommended trace length is 3 mm from device pin to connector pad. Longer traces increase inductance, degrading clamping response during sub-nanosecond ESD events. Layout guidelines require direct routing to connector pins with no vias or stubs, and grounding via multiple short traces to minimize loop inductance in the transient return path.

Can PESD2CANFD36VT-Q be used to protect RS-485 lines in industrial applications?

No - this device is qualified and characterized exclusively for automotive bus standards (CAN-FD, FlexRay, SENT) and tested per AEC-Q101, IEC 61000-4-2, and ISO 10605. Its 36 V standoff and 50 V clamping are optimized for 24 V automotive nets, not industrial RS-485 common-mode ranges (±7 V to ±12 V), and lacks IEC 61000-4-4/5 surge ratings required for industrial environments.

Does the 6 pF capacitance apply to both diode channels independently?

Yes - 6 pF is the typical capacitance measured from Pin 1 to Pin 3 and from Pin 2 to Pin 3 at 1 MHz and 2.5 V reverse bias. The datasheet confirms ≤0.5% matching between channels, meaning both exhibit 5.2–6.0 pF under identical test conditions, critical for maintaining differential signal symmetry.

Is the common cathode (Pin 3) required to connect directly to chassis ground?

Pin 3 must connect to the lowest-impedance ground reference available - typically the main system ground plane, not necessarily chassis ground. In CAN-FD designs, it is routed to the same ground net as the transceiver's ground pin and shield drain, avoiding shared return paths with power or digital noise sources to prevent ground bounce during clamping events.