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STMicroelectronics ESDCAN03-2BWY
- Part No.:
- ESDCAN03-2BWY
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
ESDCAN03-2BWY.pdf
- Description:
- TVS DIODE 24VWM 41VC SOT323-3
- Quantity:
- Payment:
- Shipping:
Inventory:162,191
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Product details
Overview
ESDCAN03-2BWY from STMicroelectronics is an AEC-Q101-qualified dual-line transient voltage suppression (TVS) diode array designed for bidirectional ESD and EOS protection of CAN H and CAN L signal lines in automotive networks. It features a breakdown voltage (VBR) of 24 V (min) to 26.5 V (typ), 170 W peak pulse power (8/20 µs), clamping voltage of 34 V at ±1 A, and junction capacitance of 3 pF (typ) - enabling robust compliance with ISO 10605 (±30 kV contact/air), ISO 7637-3 (Pulse 3a/b), and CAN-FD high-speed bus requirements.
For engineers reviewing the ESDCAN03-2BWY datasheet, ESDCAN03-2BWY pinout, ESDCAN03-2BWY application, or ESDCAN03-2BWY equivalent, key selection criteria include its low clamping factor (VCL/VBR ≈ 1.29), SOT323-3L footprint compatibility with IPC7531/JEDEC standards, AEC-Q101 qualification, and verified performance under ISO 16750-2 jump-start and reverse-battery stress conditions.
Technical Context
This dual-channel TVS device implements symmetrical bidirectional avalanche clamping across two independent channels (IO1–GND and IO2–GND), each optimized for low dynamic impedance and minimal signal distortion on differential CAN buses. Its design enforces strict adherence to physical-layer constraints including ISO 7637-3 Pulse 2a (±85 V), Pulse 3a (−150 V), and Pulse 3b (+150 V), while maintaining sub-3.5 pF line-to-ground capacitance to preserve signal integrity up to 5 Mbps CAN-FD data rates.
The device operates over −55 °C to +175 °C junction temperature range and exhibits temperature coefficient αT = 0.01 × 10−4/°C for VBR, ensuring stable clamping behavior across automotive thermal extremes. Its ECOPACK2-compliant SOT323-3L package supports lead-free reflow per J-STD-020 MSL Level 1 and meets UL94 V0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ) | 24 V / 26.5 V - Ensures reliable turn-on before CAN transceiver damage threshold (~30 V) |
| VCL @ IPP=1 A | 34 V - Limits transient overvoltage to safe level for ISO 11898-2 compliant PHYs |
| IPP (8/20 µs) | 3.7 A - Supports full ISO 10605 ±30 kV discharge without degradation |
| CJ (1 MHz, 0 V) | 3 pF - Enables <5 Mbps CAN-FD operation with negligible signal rise-time impact |
| Leakage (IR @ VRM) | 0.01 µA - Prevents bus loading and false wake-up in low-power sleep modes |
| Operating Tj | −55 °C to +175 °C - Validated for under-hood placement near engine control units |
| Package | SOT323-3L - JEDEC-registered, IPC7531-compliant footprint for automated assembly |
Pinout & Package
ESDCAN03-2BWY is housed in a compact SOT323-3L surface-mount package (2.0 × 1.25 × 0.9 mm), with three terminals arranged in standard JEDEC orientation: Pin 1 (IO1), Pin 2 (GND), Pin 3 (IO2). The package is ECOPACK2-compliant and rated MSL Level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (IO1) | CAN H signal line terminal | Protected input/output node for high-side CAN bus conductor |
| Pin 2 (GND) | Common reference and return path | Low-inductance ground connection essential for effective transient shunting |
| Pin 3 (IO2) | CAN L signal line terminal | Protected input/output node for low-side CAN bus conductor |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel bidirectional clamping | Independent protection for CAN H and CAN L without cross-talk or shared impedance |
| Low clamping factor (VCL/VBR) | ≈1.29 - Minimizes voltage overshoot during fast transients while preserving bus common-mode range |
| AEC-Q101 qualification | Validated for automotive Grade 1 (−40 °C to +125 °C ambient) and extended junction range (−55 °C to +175 °C) |
| Ultra-low line capacitance | 3 pF typical - Maintains signal edge fidelity for CAN-FD, LIN, and future CAN XL protocols |
| ISO 10605 Level 4 compliance | Passes ±30 kV contact/air discharge with C = 150 pF/R = 330 Ω and C = 330 pF/R = 2 kΩ configurations |
Applications
| Automotive CAN Bus Protection | CAN-FD High-Speed Node |
|---|---|
Use Scenario: Protecting body control module (BCM) CAN interface against ESD events during service and ISO 7637-3 load-dump transients in 12 V systems. IC Role / Device Role / Timing Role: Dual-line TVS diode array providing primary overvoltage clamp between CAN H/L and chassis ground. Use Value: Prevents permanent damage to CAN transceivers during roadside diagnostics or connector mating/unmating, validated to ±30 kV per ISO 10605. | Use Scenario: Securing gateway ECU CAN-FD interfaces operating at 2–5 Mbps in ADAS domain controllers. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor preserving signal integrity and minimizing bit error rate. Use Value: 3 pF capacitance ensures <1 ns added rise time delay, meeting CAN-FD timing budgets without retiming or equalization. |
| LIN Bus Protection | Under-Hood Engine Control Unit |
Use Scenario: Shielding LIN slave nodes (e.g., HVAC actuators, door modules) from ESD coupling via harness routing near high-voltage domains. IC Role / Device Role / Timing Role: Bidirectional TVS protecting single-wire LIN bus against contact discharge and coupled noise. Use Value: Sub-35 V clamping voltage prevents LIN transceiver latch-up while maintaining 19.2 kbps timing margins. | Use Scenario: Safeguarding CAN communication in engine control units exposed to under-hood thermal cycling and battery reversal events. IC Role / Device Role / Timing Role: AEC-Q101-qualified transient protector surviving ISO 16750-2 jump-start (+25 V) and reverse polarity (−14 V) tests. Use Value: Junction temperature rating up to +175 °C enables direct PCB mounting near exhaust manifolds without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line automotive CAN bus protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDCAN02-2BWY | VBR = 26.5–28.5 V (higher than ESDCAN03-2BWY's 24–26.5 V); identical SOT323-3L package and clamping behavior | Better suited for legacy CAN systems with higher transceiver VCC tolerance; less margin for low-voltage 3.3 V CAN PHYs | Select when system VCC ≥ 5 V and higher stand-off voltage is preferred to reduce leakage-induced bus offset |
| ESDCAN04-2BWY | Higher capacitance (17–19 pF vs. 3 pF); same VBR range (25.5–27.5 V); optimized for cost-sensitive 125 kbps CAN | Not suitable for CAN-FD > 1 Mbps due to bandwidth limitation; acceptable for body electronics with long stubs | Choose for non-high-speed applications where ESD robustness is prioritized over signal integrity |
Compared with ESDCAN02-2BWY and ESDCAN04-2BWY, ESDCAN03-2BWY delivers optimal balance of low clamping voltage (34 V), ultra-low capacitance (3 pF), and AEC-Q101 reliability - making it the preferred choice for modern CAN-FD gateways and safety-critical domain controllers requiring both speed and ruggedness.
Availability
ESDCAN03-2BWY is available at Aetrix Electronics and suitable for automotive CAN-FD gateways, engine control units, and body control modules requiring stable component supply across multi-year production cycles and Tier-1 OEM programs.
Supply support for ESDCAN03-2BWY 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management solutions with vertical manufacturing and broad analog/mixed-signal IP.
The ESDCANxx series belongs to ST's automotive-grade protection portfolio, engineered specifically to meet stringent ISO 10605, ISO 7637-3, and AEC-Q101 requirements for CAN/LIN physical layer resilience in harsh vehicle environments.
FAQ
What is the maximum operating temperature for ESDCAN03-2BWY?
The ESDCAN03-2BWY has a specified junction temperature range of −55 °C to +175 °C, validated per AEC-Q101 stress testing. This allows direct PCB mounting in under-hood locations such as near engine control units or transmission control modules without thermal derating, provided board-level thermal design maintains Tj within limits.
Does ESDCAN03-2BWY support CAN-FD data rates up to 5 Mbps?
Yes - its typical junction capacitance of 3 pF (measured at 1 MHz, 0 V) introduces negligible signal distortion, enabling clean 5 Mbps CAN-FD waveforms. Measured S21 attenuation remains below −1 dB up to 1 GHz, confirming suitability for high-speed differential bus protection without equalization or retiming.
How does ESDCAN03-2BWY differ from generic bidirectional TVS diodes?
Unlike generic TVS devices, ESDCAN03-2BWY is specifically characterized for automotive CAN bus signaling: it guarantees matched channel parameters (VBR, CJ, VCL), passes ISO 7637-3 Pulse 2a/3a/3b validation, and is qualified to AEC-Q101 with full failure analysis reporting - ensuring predictable behavior in differential bus fault scenarios.
Can ESDCAN03-2BWY replace ESDCAN05-2BWY in a 12 V automotive system?
No - ESDCAN05-2BWY has VBR = 36–39 V and is intended for 24 V commercial vehicle systems. Using ESDCAN03-2BWY (VBR = 24–26.5 V) in a 24 V environment risks premature clamping during normal battery transients (e.g., jump-start up to +25 V), potentially disrupting bus communication or increasing leakage current.
ESDCAN03-2BWY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26.5V
- Voltage - Clamping (Max) @ Ipp:
- 41V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 250W
- Power Line Protection:
- No
- Applications:
- CAN
- Capacitance @ Frequency:
- 3pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323-3
ESDCAN03-2BWY FAQ
1.How can I place an order for ESDCAN03-2BWY through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDCAN03-2BWY 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 ESDCAN03-2BWY reliable?
The price and inventory of ESDCAN03-2BWY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDCAN03-2BWY is usually 5 days.
3.What payment methods are accepted for ESDCAN03-2BWY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDCAN03-2BWY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDCAN03-2BWY?
ESDCAN03-2BWY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDCAN03-2BWY 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 ESDCAN03-2BWY?
For technical support, including ESDCAN03-2BWY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDCAN03-2BWY requirements.
6.How does Aetrix verify that ESDCAN03-2BWY is sourced from the original manufacturer or authorized distributors?
All ESDCAN03-2BWY 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 ESDCAN03-2BWY meets industry standards.
7.What is the process for return or replacement of ESDCAN03-2BWY?
All ESDCAN03-2BWY units undergo pre-shipment inspection (PSI). If there is an issue with ESDCAN03-2BWY, 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 ESDCAN03-2BWY part is unused and in its original packaging.
Return procedure for ESDCAN03-2BWY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESDCAN03-2BWY Tags
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