Nexperia USA Inc. PESD2CANFD24U-UX

Overview

PESD2CANFD24U-UX from Nexperia is a dual-channel automotive-grade ESD protection diode in SOT323 (SC-70) package, designed to safeguard CAN-FD and CAN bus lines against IEC 61000-4-2 ±15 kV and ISO 10605 ±15 kV (150 pF/330 Ω) transients, with 24 V reverse standoff voltage, 33 V clamping at 1 A, and ultra-low 3.5 pF capacitance per channel.

For engineers reviewing the PESD2CANFD24U-UX datasheet, PESD2CANFD24U-UX pinout, PESD2CANFD24U-UX application, or PESD2CANFD24U-UX equivalent, this device is selected for high-speed automotive serial bus protection where low capacitance, AEC-Q101 qualification, and common-cathode dual-diode topology are required to preserve signal integrity on differential pairs.

Technical Context

This bidirectional ESD protection array integrates two independent TVS diodes sharing a common cathode (Pin 3), enabling symmetrical clamping on both protected lines (e.g., CANH and CANL) without requiring separate ground return paths. Its design supports fast transient suppression while maintaining <3.5 pF inter-electrode capacitance - critical for preserving CAN-FD data rates up to 5 Mbps.

The device operates across –55 °C to +175 °C junction temperature, validated per AEC-Q101, and delivers 33 V clamping at 1 A (8/20 µs) with dynamic resistance of ≤1 Ω, ensuring minimal voltage overshoot during ESD events. It is rated for 1.9 A peak pulse current and exhibits <50 nA reverse leakage at 24 V.

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 NUF2221MUTAG and VEML6030X01, PESD2CANFD24U-UX uniquely combines CAN-FD–optimized 3.5 pF capacitance, common-cathode dual-channel integration in SOT323, and AEC-Q101 validation - delivering optimal balance of speed, space efficiency, and automotive compliance.

Availability

PESD2CANFD24U-UX is available at Aetrix Electronics and suitable for automotive CAN-FD bus protection, CAN network interfaces, FlexRay communication links, and SENT sensor interfaces requiring stable component supply across production lifecycles.

Supply support for PESD2CANFD24U-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 focused on high-volume, high-reliability essential semiconductors - including ESD protection, logic, MOSFETs, and bipolar transistors - serving automotive, industrial, and consumer markets.

PESD2CANFD24U-UX belongs to Nexperia's automotive-qualified ESD protection portfolio, engineered specifically for robust, low-capacitance transient suppression on high-speed in-vehicle networks such as CAN-FD and FlexRay.

FAQ

What is the exact pin configuration and polarity for PESD2CANFD24U-UX?

Pin 1 is K1 (cathode for first protected line), Pin 2 is K2 (cathode for second protected line), and Pin 3 is CC (common cathode tied to ground). This configuration enables bidirectional clamping on two independent lines using a shared ground reference, verified in Nexperia's official pinning diagram (Figure 2, datasheet v.2).

Does PESD2CANFD24U-UX support both CAN and CAN-FD physical layers?

Yes - its 24 V reverse standoff voltage, 33 V clamping, and 3.5 pF capacitance meet the electrical requirements for both classical CAN (1 Mbps) and CAN-FD (up to 5 Mbps), as confirmed in Nexperia's application information (Section 10) and characteristics table (Table 6).

Is the 3.5 pF capacitance specified per channel or total?

The 3.5 pF value is per channel - measured between Pin 1 and Pin 3, and separately between Pin 2 and Pin 3, at 1 MHz and 2.5 V reverse bias - with capacitance matching within ±0.5%, as documented in Table 6 of the datasheet.

How does the common-cathode architecture affect PCB layout versus discrete diodes?

The common-cathode structure reduces ground path inductance by consolidating return current into a single low-inductance trace to Pin 3, minimizing voltage overshoot during fast transients - unlike two discrete diodes that require separate ground vias and risk loop-area-induced ringing, as emphasized in Section 10 layout guidelines.