Nexperia USA Inc. PESD2CANFD27U-UX

Overview

PESD2CANFD27U-UX from Nexperia is a dual-channel automotive-grade ESD protection diode in SOT323 (SC-70) package, designed for CAN-FD and CAN bus lines. It provides 27 V reverse standoff voltage, 34 V clamping at 1 A, 4.0 pF capacitance, 15 kV IEC 61000-4-2 ESD immunity, and AEC-Q101 qualification for under-hood vehicle networks.

For engineers reviewing the PESD2CANFD27U-UX datasheet, PESD2CANFD27U-UX pinout, PESD2CANFD27U-UX application, or PESD2CANFD27U-UX equivalent, key selection criteria include bidirectional clamping performance, ultra-low capacitance for high-speed bus integrity, common-cathode dual-diode topology, and junction temperature rating up to 175 °C in automotive environments.

Technical Context

This device implements a dual common-cathode TVS diode architecture with matched capacitance (±0.5%) between each anode-to-cathode path, enabling symmetrical transient suppression on differential bus pairs. Its low dynamic resistance (1.3 Ω) ensures rapid voltage clamping during 8/20 µs surges and sub-1 ns ESD events.

The 27 V VRWM aligns with CAN-FD's 24 V supply margin and supports operation across –55 °C to +175 °C ambient, while the 1.8 A peak pulse current rating meets ISO 7637-3 and IEC 61000-4-5 surge requirements for Class III automotive transceivers.

Key Specifications

Pinout & Package

Package: SOT323 (SC-70), 3-lead surface-mount plastic package, 2.0 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NUP4105MR6T1G, PESD2CANFD27U-UX offers 33% lower clamping voltage and 67% lower capacitance - critical for maintaining 5 Mbps CAN-FD eye diagram compliance - while its 3-pin common-cathode design simplifies layout and reduces ground inductance versus dual-discrete solutions.

Availability

PESD2CANFD27U-UX is available at Aetrix Electronics and suitable for automotive infotainment gateways, ADAS domain controllers, powertrain ECUs, and body electronics requiring stable component supply across extended temperature and lifecycle demands.

Supply support for PESD2CANFD27U-UX 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 delivering high-performance, reliable components for automotive, industrial, and consumer applications, with leadership in ESD protection and logic technologies.

PESD2CANFD27U-UX belongs to Nexperia's Automotive ESD Protection portfolio, engineered specifically for high-speed in-vehicle networks including CAN-FD, CAN, FlexRay, and SENT - emphasizing low capacitance, AEC-Q101 compliance, and robust transient handling.

FAQ

What is the maximum recommended PCB trace length between PESD2CANFD27U-UX and the protected CAN connector?

Per Nexperia application guidance, the trace length from the device's Pin 1 or Pin 2 to the connector should be ≤3 mm, and the return path from Pin 3 to chassis ground must be as short and low-inductance as possible - ideally using multiple vias to an internal ground plane. Longer traces degrade ESD suppression effectiveness above 500 MHz.

Does PESD2CANFD27U-UX support bidirectional or unidirectional ESD protection?

PESD2CANFD27U-UX provides bidirectional protection: each anode-to-common-cathode path conducts during both positive and negative transients, enabling full-spectrum suppression on differential bus lines without polarity constraints. This is confirmed by symmetric V-I characteristics and ±15 kV IEC 61000-4-2 ratings.

Can this device protect both CANH and CANL simultaneously with a single ground connection?

Yes - its common-cathode (Pin 3) architecture allows simultaneous protection of CANH (via Pin 1) and CANL (via Pin 2) using one shared low-inductance ground node. This eliminates the need for separate ground returns and ensures matched clamping behavior critical for differential signal integrity.

Is PESD2CANFD27U-UX compatible with lead-free reflow soldering profiles?

Yes - it is qualified for standard JEDEC J-STD-020D.3 lead-free reflow, with peak temperature up to 260 °C for ≤30 seconds. The SOT323 package outline and solder land patterns (Fig. 13) are optimized for controlled collapse chip connection (C4) and void-free joint formation in automotive manufacturing.