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PESD1CAN

Dual CAN bus ESD protection diode, 24V standoff, 23kV ESD, SOT-23

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Manufacturer Part：

PESD1CAN

Package：

SOT-23 (TO-236AB, 2.9 x 1.3 x 1.0 mm, 3 leads)

Brand：
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Description

Product Overview

The PESD1CAN from Nexperia is a CAN bus ESD protection diode in SOT-23 that protects two automotive CAN bus lines up to 23kV ESD with low clamping voltage and ultra-low leakage.

Key Specifications

Function CAN Bus ESD Protection Diode
Channels 2 (protects 2 CAN lines)
Reverse Standoff Voltage (VRWM) 24V
Breakdown Voltage (VBR) 25.4V ~ 30.3V @ 5mA
Clamping Voltage (VCL) 40V @ IPP=1A; 70V @ IPP=3A
ESD Protection Up to 23kV (IEC 61000-4-2 contact)
Peak Pulse Current (IPP) 3A @ 8/20us
Peak Pulse Power (PPP) 200W @ 8/20us
Leakage Current (IRM) <1nA (typ) / 50nA (max)
Diode Capacitance (Cd) 11pF (typ) @ 1MHz
Capacitance Matching 0.1% (typ)
Package SOT-23 (TO-236AB)
Operating Temperature -65 to +150 C

Features

  • Protects two CAN bus lines in one SOT-23 package
  • ESD protection up to 23kV (IEC 61000-4-2 Level 4)
  • Ultra-low leakage current (<1nA typical)
  • 0.1% capacitance matching for CAN signal integrity
  • AEC-Q101 qualified (automotive grade)

Applications

  • Automotive CAN bus ESD protection
  • Industrial CAN network protection
  • Controller Area Network transceiver protection

The PESD1CAN from Nexperia is a dedicated ESD protection diode array designed specifically for protecting two Controller Area Network (CAN) bus lines from electrostatic discharge and other transient voltage events in automotive and industrial applications. The device integrates two steering diodes in a single SOT-23 package, with both cathodes connected to a common ground pin (pin 3), providing a compact and cost-effective solution for bidirectional CAN bus protection. The 24V reverse standoff voltage is compatible with both 5V and 12V CAN bus systems, while the 25.4-30.3V breakdown voltage ensures the protection device does not conduct during normal CAN bus operation (which uses 2.5V typical common-mode voltage with 1V differential). The ultra-low leakage current of less than 1nA typical ensures the protection device does not load the CAN bus or affect the transceiver’s recessive bus state. The 0.1% typical capacitance matching between the two diodes is critical for maintaining the symmetry and signal integrity of the differential CAN bus, preventing common-mode to differential-mode conversion that would degrade EMC performance. The device provides ESD protection up to 23kV per IEC 61000-4-2 (contact discharge), far exceeding the 8kV Level 4 requirement, making it suitable for harsh automotive environments.

The PESD1CAN operates as a bidirectional transient voltage suppression device for CAN bus lines. Key subsystems include: (1) Steering Diode Pair – two identical steering diodes are connected between each CAN line (CANH and CANL) and a common ground; the diodes are normally reverse-biased at the CAN bus common-mode voltage (typically 2.5V), well below the 24V standoff voltage; when a positive transient exceeds the breakdown voltage (25.4V min), the diode avalanches and clamps the voltage; when a negative transient pulls the line below -0.6V, the diode forward-biases and clamps; (2) ESD Clamping – during an ESD event, the fast-rising transient (0.7-1ns rise time) is clamped by the diode’s avalanche mechanism; the clamping voltage at 1A (40V) is well below the CAN transceiver’s maximum rating (typically -27V to +40V), protecting the transceiver; at higher currents (3A surge), the clamping voltage rises to 70V; (3) Capacitance Matching – the 0.1% typical capacitance matching between the two diodes ensures that CANH and CANL see identical capacitive loading, which is critical for the differential signaling scheme; any mismatch would convert common-mode noise to differential noise, degrading the CAN bus signal-to-noise ratio; the 11pF typical capacitance per diode is low enough to not significantly load the CAN bus at the 1Mbps maximum CAN data rate.

Pin Name Function
1 CANH CAN High line (cathode of diode 1)
2 CANL CAN Low line (cathode of diode 2)
3 GND Common ground (anode of both diodes)
  • Automotive CAN node: protect CANH/CANL lines of TJA1042T transceiver from ESD during connector handling and field operation
  • Industrial CAN bus: protect CAN bus lines in factory automation from ESD caused by long cable runs near machinery
  • OBD-II diagnostic port: protect the CAN bus pins on the vehicle diagnostic connector from ESD during tool connection
Manufacturer Part Number Package Notes
Nexperia PESD1CAN-U SOT-323 Smaller SC-70 package, lower capacitance
Nexperia PESD2CAN SOT-23 Different pinout for dual CAN protection
TI TPD4E05U06DQAR WCSP Quad channel ESD for CAN + other lines
onsemi NUP2105LT1G SOT-23 CAN bus TVS, 24V standoff, similar function
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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