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Nexperia USA Inc. PESD2CAN24LT-QR
- Part No.:
- PESD2CAN24LT-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
PESD2CAN24LT-QR.pdf
- Description:
- PESD2CAN24LT-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,980
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Product details
Overview
PESD2CAN24LT-Q from Nexperia is a dual-channel automotive-grade ESD protection diode in SOT23 package, designed to safeguard CAN FD bus lines against IEC 61000-4-2 (±30 kV), ISO 10605 (±30 kV), and IEC 61000-4-5 (9 A surge) transients. It features 24 V reverse standoff voltage, 29.5 V clamping at 1 A, 25 pF capacitance, and AEC-Q101 qualification for under-hood CAN interface protection.
For engineers reviewing the PESD2CAN24LT-Q datasheet, PESD2CAN24LT-Q pinout, PESD2CAN24LT-Q application, or PESD2CAN24LT-Q equivalent, this device delivers verified bidirectional transient suppression with matched capacitance, low dynamic resistance (0.14 Ω), and precise common-cathode topology for differential CANH/CANL line protection in production automotive ECUs.
Technical Context
This dual-diode array uses a common-cathode configuration (pins 1/K1, 2/K2, 3/CC) to provide symmetrical transient clamping on two independent signal lines relative to a shared reference. Its design targets CAN FD physical layer compliance where low capacitance (25 pF typ.) and tight capacitance matching (<0.5% ΔCd/Cd) preserve signal integrity up to 5 Mbps.
The device operates within ±24 V reverse standoff range and clamps to ≤33.5 V at 9 A surge (8/20 µs), with breakdown voltage specified between 25.5 V and 36 V at 10 mA. Reverse leakage remains ≤50 nA at 24 V, supporting low-power always-on bus monitoring without loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 24 V - Maximum continuous operating voltage before conduction; sets safe margin above 12 V automotive supply and CAN common-mode range. |
| Clamping Voltage (VCL) | 29.5 V at 1 A - Peak voltage seen by protected CAN transceiver during ESD event; ensures downstream IC stays below absolute max ratings. |
| Surge Current (IPPM) | 9 A at 8/20 µs - Withstands ISO 7637-2 pulse 3a/3b (±220 V/±150 V) and IEC 61000-4-5 surges without degradation. |
| Diode Capacitance (Cd) | 25 pF at 1 MHz, 0 V - Minimizes signal distortion and timing skew on high-speed CAN FD buses; matched between channels (<0.5% difference). |
| ESD Rating | ±30 kV per IEC 61000-4-2 and ISO 10605 - Validated for direct contact discharge in assembly, service, and end-user environments. |
| Dynamic Resistance (Rdyn) | 0.14 Ω - Low impedance during transient conduction reduces clamping overshoot and improves energy dissipation efficiency. |
| AEC-Q101 Qualification | Qualified - Meets stress test requirements for temperature cycling, HTRB, UHAST, and ESD robustness required for automotive under-hood deployment. |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch); 3-terminal monolithic dual-diode structure with common cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K1 (Cathode of Diode 1) | Connects to CANH line; forms low-impedance path to common cathode during positive transients on CANH. |
| 2 | K2 (Cathode of Diode 2) | Connects to CANL line; provides symmetric clamping for negative transients on CANL relative to CC. |
| 3 | CC (Common Cathode) | Reference node tied to system ground or chassis; enables bidirectional clamping for both differential lines using single return path. |
Key Features
| Feature | Design Value |
|---|---|
| Common-cathode dual-diode architecture | Enables compact, balanced protection of differential CANH/CANL without separate ground paths-reducing PCB layout complexity and ground loop risk. |
| 25 pF matched capacitance | Ensures <0.5% inter-channel capacitance mismatch, preserving differential signal symmetry and minimizing jitter on CAN FD links up to 5 Mbps. |
| 29.5 V clamping at 1 A | Keeps peak transient voltage safely below typical CAN transceiver absolute maximum rating (36 V), preventing latch-up or damage. |
| 0.14 Ω dynamic resistance | Reduces clamping voltage overshoot during fast-rising ESD events (IEC 61000-4-2, tr < 1 ns), improving protection margin. |
| AEC-Q101 qualification | Validates reliability across -55 °C to +150 °C ambient, including temperature cycling, humidity testing, and mechanical shock for engine bay use. |
Applications
| Automotive CAN FD ECU | Body Control Module (BCM) |
|---|---|
Use Scenario: Protection of high-speed CAN FD interfaces in powertrain and ADAS domain controllers exposed to assembly-line ESD and roadside surge events. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector entry point, clamping both CANH and CANL to common ground reference. Use Value: Maintains signal integrity at 5 Mbps while surviving ±30 kV contact discharge and 9 A IEC 61000-4-5 surges-enabling zero-failure field deployment. |
Use Scenario: ESD hardening of CAN bus lines in centralized body control units managing lighting, door locks, and HVAC. IC Role / Device Role / Timing Role: Dual-line protector with matched capacitance ensuring minimal skew between CANH/CANL, critical for error-free arbitration in multi-node networks. Use Value: 25 pF capacitance and <0.5% channel matching prevent bit timing violations during 1 Mbps classical CAN operation under harsh EMC conditions. |
| Electric Vehicle Battery Management System | Automotive Gateway Module |
Use Scenario: Transient protection for CAN communication between battery pack sensors and main BMS controller in high-voltage EV platforms. IC Role / Device Role / Timing Role: Surge-rated clamp located at HV isolation barrier interface, referenced to functional ground to avoid common-mode injection. Use Value: Withstands ISO 7637-2 Pulse 3a (-220 V) and Pulse 2a (+90 V) without degradation-ensuring CAN uptime during load dump and relay switching events. |
Use Scenario: Front-end protection for multi-bus gateways routing messages between CAN FD, LIN, and Ethernet domains in modern vehicle architectures. IC Role / Device Role / Timing Role: First-stage ESD filter before CAN transceiver, reducing stress on secondary TVS and enabling smaller overall protection footprint. Use Value: Low 50 nA leakage at 24 V prevents battery drain in always-on gateway sleep modes while maintaining full 30 kV ESD immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel automotive CAN bus protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUF2221MUTAG | Higher VRWM (26 V), higher VCL (36 V at 1 A), 30 pF capacitance, no AEC-Q101 documentation in public datasheet. | Less suitable for 12 V CAN systems requiring tight clamping margin; higher capacitance may limit >2 Mbps operation. | Select only if 26 V standoff is required and AEC-Q101 validation is not mandatory for the program. |
| Vishay SMA6J24A | Single-channel, unidirectional, 24 V standoff, 38.9 V clamping at 9 A, 150 pF capacitance, AEC-Q101 qualified. | Requires two devices plus external biasing for bidirectional CAN protection; excessive capacitance degrades high-speed signal integrity. | Not recommended for CAN FD; acceptable only for legacy 125 kbps CAN where layout space allows dual-device implementation. |
Compared with NUF2221MUTAG and SMA6J24A, PESD2CAN24LT-Q uniquely combines AEC-Q101 qualification, 25 pF matched capacitance, 29.5 V low clamping, and integrated common-cathode dual-diode topology-making it the only drop-in solution for space-constrained, high-speed automotive CAN FD designs requiring production-grade reliability.
Availability
PESD2CAN24LT-Q is available at Aetrix Electronics and suitable for automotive CAN FD ECUs, body control modules, battery management systems, and gateway modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for PESD2CAN24LT-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-enhancing components, with leadership in ESD protection, logic, discrete, and MOSFET technologies for automotive, industrial, and mobile markets.
PESD2CAN24LT-Q belongs to Nexperia's Automotive ESD Protection portfolio, engineered specifically for robust, high-fidelity transient suppression on differential in-vehicle networks-including CAN FD, LIN, and FlexRay-under extreme thermal and electrical stress.
FAQ
What is the maximum junction temperature for continuous operation?
The PESD2CAN24LT-Q has a maximum junction temperature (Tj) rating of 150 °C, validated per AEC-Q101 stress testing. Continuous operation at this limit requires thermal design that maintains junction-to-ambient thermal resistance ≤40 K/W, typically achieved via copper pour under the SOT23 pad and minimal trace length to ground.
Can this device protect both CANH and CANL simultaneously during a common-mode surge?
Yes-the common-cathode (pin 3) configuration enables simultaneous clamping of both CANH (pin 1) and CANL (pin 2) to the same reference. During a common-mode surge, current flows through both diodes into the shared cathode node, limiting voltage rise across the differential pair while maintaining signal integrity.
Is the 25 pF capacitance measured differentially or line-to-ground?
The 25 pF value is measured line-to-ground: capacitance between pin 1 and pin 3 (K1–CC) and between pin 2 and pin 3 (K2–CC), each specified at 25 pF typical (1 MHz, 0 V bias). The datasheet confirms <0.5% matching between these two capacitances, critical for differential signal fidelity.
Does the device meet ISO 7637-3 requirements for coupled transient immunity?
No-PESD2CAN24LT-Q is characterized for ISO 7637-2 pulses (2a, 3a, 3b) and IEC 61000-4-5 surge, but ISO 7637-3 specifies capacitive coupling clamp tests not covered in its qualification scope. System-level ISO 7637-3 compliance requires additional filtering or common-mode chokes upstream of this device.
PESD2CAN24LT-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- -
- Unidirectional Channels:
- -
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- -
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PESD2CAN24LT-QR FAQ
1.How can I place an order for PESD2CAN24LT-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD2CAN24LT-QR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PESD2CAN24LT-QR reliable?
The price and inventory of PESD2CAN24LT-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD2CAN24LT-QR is usually 5 days.
3.What payment methods are accepted for PESD2CAN24LT-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD2CAN24LT-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD2CAN24LT-QR?
PESD2CAN24LT-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD2CAN24LT-QR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PESD2CAN24LT-QR?
For technical support, including PESD2CAN24LT-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD2CAN24LT-QR requirements.
6.How does Aetrix verify that PESD2CAN24LT-QR is sourced from the original manufacturer or authorized distributors?
All PESD2CAN24LT-QR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PESD2CAN24LT-QR meets industry standards.
7.What is the process for return or replacement of PESD2CAN24LT-QR?
All PESD2CAN24LT-QR units undergo pre-shipment inspection (PSI). If there is an issue with PESD2CAN24LT-QR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PESD2CAN24LT-QR part is unused and in its original packaging.
Return procedure for PESD2CAN24LT-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD2CAN24LT-QR Tags
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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