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Texas Instruments ESD2CAN36DBZRQ1
- Part No.:
- ESD2CAN36DBZRQ1
- Manufacturer:
- Texas Instruments
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ESD2CAN36DBZRQ1.pdf
- Description:
- AUTOMOTIVE, TWO-CHANNEL BIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:2,920
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Product details
Overview
ESD2CAN36DBZRQ1 from Texas Instruments is a dual-channel, bidirectional automotive TVS diode designed for ESD and surge protection of CANH/CANL differential lines in AEC-Q101-qualified in-vehicle networks. It features 36V working voltage, ±25kV IEC 61000-4-2 contact/air-gap ESD immunity, 4.3A IEC 61000-4-5 (8/20μs) surge current rating, 2.8pF typical line capacitance, and low 43V clamping voltage at 1A - enabling robust protection for high-speed CAN transceivers without signal integrity degradation.
For engineers reviewing the ESD2CAN36DBZRQ1 datasheet, ESD2CAN36DBZRQ1 pinout, ESD2CAN36DBZRQ1 application, or ESD2CAN36DBZRQ1 equivalent, this page delivers verified electrical specifications, SOT-23 (DBZ) package details, CAN bus interface protection context, thermal metrics, and validated alternative options for automotive ESD hardening designs.
Technical Context
The ESD2CAN36DBZRQ1 implements a symmetric bidirectional TVS structure optimized for differential CAN bus lines, with matched dynamic resistance (0.49Ω) and low clamping voltage to limit transient overvoltage seen by downstream CAN transceivers. Its design targets ISO 10605-compliant automotive environments where 330pF/330Ω discharge events must be safely shunted to ground without latch-up or parametric shift.
It operates across –55°C to +150°C, supports ±36V DC working voltage, and maintains ≤50nA leakage at rated reverse bias - ensuring minimal impact on CAN bus DC termination and common-mode voltage stability. The device uses silicon avalanche technology with controlled snapback characteristics, validated per AEC-Q101 HBM (±2.5kV) and CDM (±1kV) stress models.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | ±36V - defines maximum continuous DC bus voltage the device withstands without conduction, matching standard CAN transceiver supply rails. |
| IEC 61000-4-2 ESD Rating | ±25kV contact / ±25kV air-gap - ensures immunity to human-body ESD events during assembly, service, or environmental exposure in vehicle cabins. |
| ISO 10605 ESD Rating | ±25kV (330pF/330Ω) - meets automotive-grade electrostatic discharge requirements for component-level qualification per OEM standards. |
| IEC 61000-4-5 Surge Current | 4.3A (8/20μs) - sustains high-energy transients induced by load dump or inductive switching on CAN harnesses without failure. |
| Clamping Voltage (VCLAMP) | 43V at 1A, 61V at 4.3A - limits peak voltage imposed on protected CAN transceiver I/O pins during surge events, preserving functional safety margins. |
| Line Capacitance (CL) | 2.8pF typical - minimizes signal distortion and timing skew on high-speed CAN (up to 1Mbps) and CAN FD (up to 5Mbps) buses. |
| AEC-Q101 Qualification | Qualified - confirms reliability for automotive under-hood and cabin applications including temperature cycling, humidity, and mechanical shock. |
Pinout & Package
SOT-23 (DBZ) 3-pin plastic package, 1.12mm max height, lead-free NiPdAu finish, MSL Level-1, compatible with standard reflow profiles. Designed for AOI-compatible placement and automotive-grade solder joint reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O (CANH) | ESD-protected input/output terminal for CAN High bus line; bidirectionally clamps transients to GND. |
| 2 | I/O (CANL) | ESD-protected input/output terminal for CAN Low bus line; electrically matched to Pin 1 for differential symmetry. |
| 3 | GND | Low-inductance ground reference for transient current return path; must be connected to chassis or system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of both polarities on differential CANH/CANL lines without polarity constraints or external biasing. |
| 2.8pF typical line capacitance | Preserves signal edge rate and eye diagram integrity on CAN FD buses operating up to 5Mbps, avoiding data corruption or bit errors. |
| 43V clamping at 1A | Keeps protected CAN transceiver within safe operating voltage range during ESD events, preventing latch-up or permanent damage. |
| 0.49Ω dynamic resistance | Minimizes voltage overshoot during fast transients by reducing IR drop across the protection path, enhancing clamping precision. |
| Leaded SOT-23 package | Supports automated optical inspection (AOI) for zero-defect manufacturing in automotive electronics production lines. |
Applications
| High-Speed CAN Bus Protection | CAN FD Network Interface |
|---|---|
Use Scenario: Protecting CAN transceivers in ADAS domain controllers where high-speed communication (1Mbps+) links radar, camera, and ECU modules. IC Role / Device Role / Timing Role: ESD2CAN36DBZRQ1 serves as front-end transient suppressor on differential CANH/CANL lines, absorbing ESD before it reaches the transceiver's sensitive analog front-end. Use Value: Prevents communication loss or reset events caused by ±25kV ESD strikes during vehicle assembly or field service, maintaining ASIL-B functional safety compliance. |
Use Scenario: Hardening CAN FD interfaces in battery management systems (BMS) communicating cell voltage and temperature data at 2–5Mbps. IC Role / Device Role / Timing Role: ESD2CAN36DBZRQ1 provides low-capacitance, low-clamp protection that preserves signal integrity across extended CAN FD bit timing windows. Use Value: Enables reliable high-bandwidth diagnostics and firmware updates over CAN FD without added jitter or bit error rate increase from parasitic capacitance. |
| Fault-Tolerant CAN Nodes | Automotive Body Control Modules |
Use Scenario: Securing fault-tolerant CAN nodes in powertrain gateways where bus continuity must be maintained despite single-point failures or ESD-induced latch-up. IC Role / Device Role / Timing Role: ESD2CAN36DBZRQ1 acts as fail-safe clamp, diverting energy away from transceiver internal protection diodes to prevent thermal runaway. Use Value: Extends system uptime by eliminating false CAN bus-off conditions triggered by ESD-induced transceiver resets in harsh engine bay environments. |
Use Scenario: Protecting door module ECUs connected via CAN to central body controller, exposed to repeated ESD from occupant contact and environmental charge buildup. IC Role / Device Role / Timing Role: ESD2CAN36DBZRQ1 functions as primary ESD barrier on CANH/CANL, interfacing directly with TI SN65HVD23x or similar transceivers. Use Value: Reduces warranty returns due to intermittent CAN communication faults caused by latent ESD damage in interior trim-integrated wiring harnesses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD2CANFD36DBZRQ1 | Lower 2.6pF capacitance, ±18kV IEC/ISO ESD rating, 3.1A surge current - optimized for CAN FD with tighter timing budgets but reduced surge margin. | Preferred for new CAN FD-only designs requiring lowest possible line capacitance; not recommended for legacy high-speed CAN or mixed-bus systems. | Select when prioritizing 5Mbps signal fidelity over maximum surge robustness; verify transceiver compatibility with lower clamping threshold. |
| TPD2E001DRYR | Single-channel, 5V VRWM, ±8kV IEC rating, 1.5pF capacitance - intended for low-voltage USB/IO protection, not automotive-grade or CAN-rated. | Not suitable for 36V CAN bus operation or AEC-Q101 environments; lacks ISO 10605 qualification and surge capability. | Only consider for non-automotive, low-voltage digital IO; reject for any CAN, CAN FD, or automotive application requiring ESD2CAN36DBZRQ1-level performance. |
Compared with ESD2CANFD36DBZRQ1, the ESD2CAN36DBZRQ1 delivers higher ESD immunity and surge current handling at the cost of slightly higher capacitance - making it the preferred choice for mixed-protocol or legacy CAN systems. Unlike TPD2E001DRYR, it is fully qualified for automotive use with validated 36V operation and ISO 10605 compliance.
Availability
ESD2CAN36DBZRQ1 is available at Aetrix Electronics and suitable for automotive ECU design, CAN FD gateway development, and body control module production requiring stable component supply and long-term automotive lifecycle support.
Supply support for ESD2CAN36DBZRQ1 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
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and automotive ICs, with leadership in high-reliability protection solutions for safety-critical systems.
The ESD2CANxx36-Q1 product line was developed specifically to address ESD and surge vulnerability in automotive CAN networks, delivering AEC-Q101-qualified, low-capacitance TVS diodes optimized for CANH/CANL differential pair protection.
FAQ
What is the maximum operating temperature range for ESD2CAN36DBZRQ1?
The ESD2CAN36DBZRQ1 is rated for continuous operation from –55°C to +150°C ambient temperature, meeting automotive under-hood and cabin environmental requirements. This range is validated per AEC-Q101 thermal cycling and high-temperature operating life tests, ensuring reliability in engine control units, battery management systems, and ADAS modules where junction temperatures may exceed 125°C.
Does ESD2CAN36DBZRQ1 support both CAN and CAN FD protocols?
Yes, ESD2CAN36DBZRQ1 supports both classical CAN (up to 1Mbps) and CAN FD (up to 5Mbps) due to its 2.8pF typical line capacitance and low dynamic resistance. Its clamping behavior and bandwidth preserve signal integrity across the full CAN FD data phase, and its ±25kV ESD rating exceeds OEM requirements for next-generation vehicle networks using flexible data-rate protocols.
How does the clamping voltage of ESD2CAN36DBZRQ1 protect downstream CAN transceivers?
The ESD2CAN36DBZRQ1 clamps to 43V at 1A and 61V at 4.3A, limiting transient overvoltage imposed on protected CAN transceivers such as TI SN65HVD23x or NXP TJA1042. This keeps the transceiver's I/O pins within absolute maximum ratings during ESD or surge events, preventing latch-up, gate oxide damage, or functional interruption - critical for ASIL-B compliant communication paths.
Is ESD2CAN36DBZRQ1 pin-compatible with ESD2CANFD36DBZRQ1?
Yes, ESD2CAN36DBZRQ1 and ESD2CANFD36DBZRQ1 share identical SOT-23 (DBZ) 3-pin packaging, pinout (IO/IO/GND), and PCB footprint. They are mechanically interchangeable on the board, though electrical differences - including ESD rating, surge current, and capacitance - require schematic and layout review before substitution in production designs.
What grounding considerations are required for optimal ESD2CAN36DBZRQ1 performance?
ESD2CAN36DBZRQ1 requires a low-inductance connection from Pin 3 (GND) to the system ground plane - ideally via multiple vias near the device - to minimize impedance in the transient return path. Poor grounding increases clamping voltage and reduces protection effectiveness. TI recommends placing the device within 5mm of the CAN connector and routing GND directly to the connector shield or chassis ground for best results.
ESD2CAN36DBZRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 36V (Max)
- Voltage - Breakdown (Min):
- 37.8V
- Voltage - Clamping (Max) @ Ipp:
- 61V (Typ)
- Current - Peak Pulse (10/1000µs):
- 4.3A (8/20µs)
- Power - Peak Pulse:
- 233W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 2.8pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ESD2CAN36DBZRQ1 FAQ
1.How can I place an order for ESD2CAN36DBZRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD2CAN36DBZRQ1 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 ESD2CAN36DBZRQ1 reliable?
The price and inventory of ESD2CAN36DBZRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD2CAN36DBZRQ1 is usually 5 days.
3.What payment methods are accepted for ESD2CAN36DBZRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD2CAN36DBZRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD2CAN36DBZRQ1?
ESD2CAN36DBZRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD2CAN36DBZRQ1 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 ESD2CAN36DBZRQ1?
For technical support, including ESD2CAN36DBZRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD2CAN36DBZRQ1 requirements.
6.How does Aetrix verify that ESD2CAN36DBZRQ1 is sourced from the original manufacturer or authorized distributors?
All ESD2CAN36DBZRQ1 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 ESD2CAN36DBZRQ1 meets industry standards.
7.What is the process for return or replacement of ESD2CAN36DBZRQ1?
All ESD2CAN36DBZRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ESD2CAN36DBZRQ1, 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 ESD2CAN36DBZRQ1 part is unused and in its original packaging.
Return procedure for ESD2CAN36DBZRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESD2CAN36DBZRQ1 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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