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Texas Instruments ESD2CANFD24DBZR
- Part No.:
- ESD2CANFD24DBZR
- Manufacturer:
- Texas Instruments
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ESD2CANFD24DBZR.pdf
- Description:
- DUAL, 2.5PF, 24-V 25-KV ESD PROT
- Quantity:
- Payment:
- Shipping:
Inventory:2,352
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Product details
Overview
ESD2CANFD24DBZR from Texas Instruments is a dual-channel bidirectional TVS diode for ESD protection of CAN FD, CAN, CAN SiC, and CAN-XL bus lines. It delivers ±25-kV IEC 61000-4-2 contact/air-gap ESD immunity, 24-V working voltage (VRWM), 2.5-pF typical line capacitance, and clamps transients to 37 V at 3.5 A - enabling robust protection in automotive and industrial in-vehicle networks.
For engineers reviewing the ESD2CANFD24DBZR datasheet, ESD2CANFD24DBZR pinout, ESD2CANFD24DBZR application, or ESD2CANFD24DBZR equivalent, key selection criteria include its SOT-23 (DBZ) leaded package for AOI compatibility, low dynamic resistance (0.45 Ω), ultra-low leakage (<50 nA at ±24 V), and verified suitability for 10-Mbps differential data rates without signal integrity degradation.
Technical Context
The ESD2CANFD24DBZR implements a back-to-back TVS clamp architecture across two independent I/O channels (Pin 1 and Pin 2) referenced to a common GND (Pin 3), supporting bidirectional differential signaling on CANH/CANL lines. Its snapback-triggered conduction ensures fast response to ESD events while maintaining high impedance below ±24 V VRWM.
It meets IEC 61000-4-5 surge immunity up to 3.5 A (8/20 µs), operates from −55°C to +150°C, and features temperature-stable clamping performance with VHOLD = 30 V - ensuring reliable reversion to low-leakage state after transient suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | ±24 V - defines maximum continuous operating voltage before clamping initiates; matches CAN FD bus common-mode range. |
| VBR (min) | ±25.5 V - DC breakdown threshold ensures robust margin above VRWM to prevent false triggering during normal operation. |
| VCLAMP @ 3.5 A | 37 V - peak clamped voltage during IEC 61000-4-5 surge; limits stress on downstream CAN transceiver inputs. |
| IO Capacitance | 2.5 pF (typ) - enables clean signal integrity up to 10 Mbps across CAN FD, CAN-XL, and legacy CAN buses. |
| Dynamic Resistance | 0.45 Ω - minimizes voltage overshoot during fast ESD transients, improving clamping precision and system-level robustness. |
| ESD Rating | ±25 kV contact / ±25 kV air-gap (IEC 61000-4-2 Level 4) - exceeds automotive OEM requirements for connector-level ESD immunity. |
| Leakage Current | ±50 nA max @ ±24 V - negligible power loss and no measurable impact on bus biasing or termination networks. |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 1.12 mm max height, leaded for automatic optical inspection (AOI) and standard reflow compatibility. RoHS-compliant, NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O (CANH or CANL) | ESD-protected bidirectional signal terminal; connects directly to one differential bus line. |
| 2 | I/O (CANL or CANH) | Second ESD-protected bidirectional signal terminal; pairs with Pin 1 for full differential protection. |
| 3 | GND | Low-inductance ground return path for clamping current; must be routed short/thick to minimize impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables seamless integration on differential CANH/CANL lines without polarity constraints or signal inversion. |
| 2.5-pF line capacitance | Preserves signal rise/fall times and eye diagram integrity at 10 Mbps - validated for CAN FD and CAN-XL compliance. |
| 0.45-Ω dynamic resistance | Reduces clamping voltage overshoot during sub-nanosecond ESD events, enhancing protection margin for sensitive transceivers. |
| −55°C to +150°C operation | Supports under-hood and industrial control environments where ambient temperatures exceed 125°C. |
| Leaded SOT-23 (DBZ) | Facilitates automated optical inspection and eliminates solder-joint voiding risks associated with leadless packages. |
Applications
| Automotive CAN FD Networks | Industrial CANopen Systems |
|---|---|
Use Scenario: ESD protection for high-speed CAN FD nodes in ADAS domain controllers and gateway ECUs exposed to connector-level ESD. IC Role / Device Role / Timing Role: Dual-channel passive TVS clamp placed between connector and CAN transceiver, providing bidirectional overvoltage suppression without affecting signal timing. Use Value: Enables 10-Mbps data rate support with <2.5-pF capacitance and maintains ±25-kV ESD immunity per IEC 61000-4-2 Level 4 - critical for ASIL-B functional safety compliance. | Use Scenario: Robust interface protection for CANopen drives and I/O modules in factory automation systems subject to frequent cable handling and field ESD events. IC Role / Device Role / Timing Role: Standalone ESD suppressor on CANH/CANL lines upstream of CiA 301-compliant transceivers, preserving bus signal integrity during hot-plug operations. Use Value: Delivers 37-V clamping at 3.5-A surge (IEC 61000-4-5) and −55°C to +150°C operation - ensuring uptime in uncontrolled industrial environments. |
| Commercial Vehicle CAN SiC Networks | Off-Highway Equipment CAN-XL Interfaces |
Use Scenario: Protection of next-generation CAN SiC (Silicon Carbide) gate driver interfaces in electric commercial vehicle powertrain modules. IC Role / Device Role / Timing Role: Low-capacitance ESD guard for high-slew-rate CAN SiC signals, placed adjacent to connector to minimize stub length and EMI coupling. Use Value: 2.5-pF capacitance prevents signal distortion at >5-Mbps SiC bus speeds; ±25-kV ESD rating withstands harsh service bay ESD exposure. | Use Scenario: Interface hardening for CAN-XL nodes in agricultural and construction machinery requiring multi-gigabit backbone communication. IC Role / Device Role / Timing Role: Dual-channel TVS device integrated into CAN-XL PHY layer to absorb connector-induced transients before reaching high-speed serializer/deserializer ICs. Use Value: Maintains <37-V clamping under 3.5-A surges while supporting CAN-XL's 20+ Mbps physical layer - validated via TLP testing up to 16 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD2CANFD24-Q1DBZR | Automotive-grade variant qualified to AEC-Q100 Grade 1 (−40°C to +125°C); identical electrical specs and DBZ package. | Required for production automotive ECUs; not necessary for industrial or non-safety-critical CAN FD designs. | Select ESD2CANFD24-Q1DBZR only when AEC-Q100 qualification is mandated by OEM or safety standard. |
| TPD2E001DRSR | Single-channel, 5.5-V VRWM, 1.5-pF capacitance; lower voltage rating and no IEC 61000-4-5 surge rating. | Suitable for low-voltage USB or GPIO protection, but cannot replace ESD2CANFD24DBZR on 24-V CAN buses. | Not a functional substitute - insufficient VRWM and missing surge immunity for in-vehicle network use. |
Compared with ESD2CANFD24-Q1DBZR, the ESD2CANFD24DBZR offers identical protection performance at lower cost and broader temperature tolerance (−55°C to +150°C vs. −40°C to +125°C), making it preferred for industrial and extended-temperature applications; TPD2E001DRSR lacks required voltage rating and surge capability for CAN FD deployment.
Availability
ESD2CANFD24DBZR is available at Aetrix Electronics and suitable for automotive infotainment gateways, industrial CANopen motion controllers, and off-highway CAN-XL telematics modules requiring stable component supply and long-term lifecycle assurance.
Supply support for ESD2CANFD24DBZR 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 leader delivering analog and embedded processing solutions, with deep expertise in signal integrity, power management, and interface protection technologies.
The ESD2CANFD24DBZR belongs to TI's high-reliability ESD protection portfolio, engineered specifically for differential high-speed in-vehicle networks including CAN FD, CAN-XL, and CAN SiC - prioritizing low capacitance, precise clamping, and extreme temperature resilience.
FAQ
What is the maximum data rate supported by the ESD2CANFD24DBZR?
The ESD2CANFD24DBZR supports data rates up to 10 Mbps, validated for CAN FD, CAN, CAN SiC, and CAN-XL protocols. Its 2.5-pF typical line capacitance ensures minimal signal distortion and preserves eye diagram margins at these speeds - confirmed by TI's characterization across bias voltages and temperature extremes.
Does the ESD2CANFD24DBZR require external biasing or power supply?
No, the ESD2CANFD24DBZR is a passive TVS diode and requires no external power or biasing. It operates solely through avalanche breakdown and snapback clamping when transient voltages exceed ±25.5 V. The device draws only ±50 nA leakage at ±24 V, eliminating standby power concerns in battery-sensitive CAN FD nodes.
Can the ESD2CANFD24DBZR be used for both CANH and CANL lines simultaneously?
Yes - the ESD2CANFD24DBZR integrates two independent bidirectional TVS channels (Pins 1 and 2) sharing a common GND (Pin 3), enabling simultaneous protection of both CANH and CANL lines with a single component. Its symmetrical clamping behavior preserves differential signal integrity without skew or imbalance.
What is the thermal resistance (RθJA) of the ESD2CANFD24DBZR in its SOT-23 (DBZ) package?
The ESD2CANFD24DBZR has a junction-to-ambient thermal resistance (RθJA) of 316.3°C/W in the SOT-23 (DBZ) package. This value assumes standard JEDEC PCB mounting conditions; actual thermal performance improves significantly with optimized copper pour and thermal vias beneath Pin 3 (GND).
Is the ESD2CANFD24DBZR compatible with lead-free reflow processes?
Yes - the ESD2CANFD24DBZR uses NIPDAU lead finish and is rated MSL Level-1 with unlimited floor life at ≤30°C/60% RH. It supports peak reflow temperatures up to 260°C and is fully compatible with standard lead-free soldering profiles per J-STD-020.
ESD2CANFD24DBZR 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):
- 24V (Max)
- Voltage - Breakdown (Min):
- 35.5V
- Voltage - Clamping (Max) @ Ipp:
- 37V (Typ)
- Current - Peak Pulse (10/1000µs):
- 3.5A (8/20µs)
- Power - Peak Pulse:
- 133W
- Power Line Protection:
- No
- Applications:
- CAN
- Capacitance @ Frequency:
- 2.5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ESD2CANFD24DBZR FAQ
1.How can I place an order for ESD2CANFD24DBZR through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD2CANFD24DBZR 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 ESD2CANFD24DBZR reliable?
The price and inventory of ESD2CANFD24DBZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD2CANFD24DBZR is usually 5 days.
3.What payment methods are accepted for ESD2CANFD24DBZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD2CANFD24DBZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD2CANFD24DBZR?
ESD2CANFD24DBZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD2CANFD24DBZR 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 ESD2CANFD24DBZR?
For technical support, including ESD2CANFD24DBZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD2CANFD24DBZR requirements.
6.How does Aetrix verify that ESD2CANFD24DBZR is sourced from the original manufacturer or authorized distributors?
All ESD2CANFD24DBZR 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 ESD2CANFD24DBZR meets industry standards.
7.What is the process for return or replacement of ESD2CANFD24DBZR?
All ESD2CANFD24DBZR units undergo pre-shipment inspection (PSI). If there is an issue with ESD2CANFD24DBZR, 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 ESD2CANFD24DBZR part is unused and in its original packaging.
Return procedure for ESD2CANFD24DBZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESD2CANFD24DBZR Tags
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