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STMicroelectronics ESDCAN04-2BLY
- Part No.:
- ESDCAN04-2BLY
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ESDCAN04-2BLY.pdf
- Description:
- TVS DIODE 25.5VWM 43VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,560
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Product details
Overview
ESDCAN04-2BLY from STMicroelectronics is an AEC-Q101-qualified dual-line bidirectional TVS diode designed for ESD and EOS protection of CAN H and CAN L signal lines in automotive networks. It features a breakdown voltage (VBR) of 27.5 V, clamping voltage (VCL) of 43 V at 3.7 A (8/20 µs), junction capacitance of 19 pF, and supports ISO 10605 ±30 kV contact/air discharge and ISO 7637-3 Pulse 3a/b transients - deployed in high-speed CAN-FD and LIN bus interfaces.
For engineers reviewing the ESDCAN04-2BLY datasheet, ESDCAN04-2BLY pinout, ESDCAN04-2BLY application, or ESDCAN04-2BLY equivalent, this device is selected for robust, low-capacitance transient suppression in automotive controller area network physical layers where clamping efficiency, thermal stability up to +150 °C, and SOT23-3L board-level integration are critical.
Technical Context
This dual-channel TVS operates symmetrically across CAN H and CAN L with matched electrical characteristics, enabling balanced transient suppression without signal skew. Its low 19 pF capacitance between IO1/IO2 and GND ensures minimal distortion on CAN-FD buses operating up to 5 Mbps and maintains signal integrity on FlexRay and USB 2.0 lines.
The device uses silicon avalanche technology with a temperature coefficient (αT) of 0.1 × 10−4/°C, allowing predictable VBR drift over −40 °C to +150 °C junction range. Clamping performance is validated per ISO 7637-3 (Pulse 2a: ±85 V; Pulse 3a: −150 V; Pulse 3b: +150 V) and IEC 61000-4-4 (4 kV EFT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 25.5 V - Ensures reliable turn-on before CAN bus overvoltage damages transceivers |
| VBR | 27.5 V - Nominal breakdown threshold aligned with 12 V automotive supply margin |
| VCL @ IPP=3.7 A | 43 V - Low clamping voltage limits stress on downstream CAN PHY during 8/20 µs surges |
| Junction capacitance | 19 pF - Enables compliance with CAN-FD timing budgets and preserves signal edge rate |
| ESD rating (ISO 10605) | ±30 kV (C=150/330 pF, R=330/2 kΩ) - Exceeds Level 4 for both contact and air discharge |
| Peak pulse power | 230 W (8/20 µs) - Handles high-energy transients from jump-start or load dump events |
| Operating temperature | −40 °C to +150 °C - Supports under-hood placement in engine control modules and body ECUs |
Pinout & Package
ESDCAN04-2BLY is housed in a JEDEC-registered SOT23-3L package (ECOPACK2, RoHS-compliant), with 3 terminals in standard orientation: Pin 1 = IO1 (CAN H), Pin 2 = GND, Pin 3 = IO2 (CAN L). The footprint matches IPC-7531 guidelines and supports automated pick-and-place assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (IO1) | CAN H line connection | Protected input/output node for high-side CAN differential signal path |
| Pin 2 (GND) | Reference ground terminal | Low-inductance return path essential for effective clamping and EMI control |
| Pin 3 (IO2) | CAN L line connection | Protected input/output node for low-side CAN differential signal path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability across temperature, humidity, and mechanical stress cycles |
| Bidirectional dual-line protection | Single-device coverage of both CAN H and CAN L eliminates need for discrete diode pairs |
| Low clamping factor (VCL/VBR ≈ 1.56) | Minimizes voltage overshoot during fast transients, reducing risk of PHY latch-up |
| 19 pF junction capacitance | Preserves signal rise/fall times on CAN-FD buses up to 5 Mbps without equalization |
| ECOPACK2 RoHS compliance | Meets EU environmental directives and supports lead-free reflow (J-STD-020 MSL Level 1) |
Applications
| Automotive CAN-FD Gateway | Body Control Module (BCM) |
|---|---|
Use Scenario: High-speed communication between ADAS domain controller and central gateway using CAN-FD at 2–5 Mbps. IC Role / Device Role / Timing Role: Transient suppressor on CAN H/CAN L differential pair, placed immediately upstream of CAN transceiver PHY. Use Value: 19 pF capacitance prevents bit error rate degradation while clamping ISO 7637-3 Pulse 3b (+150 V) within safe PHY voltage limits. |
Use Scenario: LIN-to-CAN bridge in door module controlling window lift, mirror fold, and lighting functions. IC Role / Device Role / Timing Role: Dual-line ESD protector shared between LIN master and CAN slave interface pins. Use Value: ±30 kV ISO 10605 rating protects against assembly-line ESD events without requiring separate protection per bus. |
| Engine Control Unit (ECU) | Electric Power Steering (EPS) |
Use Scenario: CAN communication in under-hood ECU exposed to jump-start surges and reverse-battery conditions. IC Role / Device Role / Timing Role: Primary transient clamp on CAN bus traces routed near high-current ignition circuits. Use Value: 230 W peak pulse power and −40 °C to +150 °C operation ensure survivability during cold-cranking and thermal cycling. |
Use Scenario: Safety-critical CAN interface in EPS motor control unit subject to mechanical vibration and EMI. IC Role / Device Role / Timing Role: Low-inductance TVS placed adjacent to CAN transceiver to suppress coupled noise from motor drivers. Use Value: Matched VBR symmetry (25.5–27.5 V) prevents common-mode imbalance that could trigger false fault detection. |
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 |
|---|---|---|---|
| ESDCAN01-2BLY | VBR = 25 V (lower threshold), VCL = 40 V @ 5.5 A, C = 30 pF | Better suited for legacy 1 Mbps CAN where higher capacitance is acceptable | Select when lower clamping voltage is prioritized over bandwidth; avoid for CAN-FD > 2 Mbps |
| ESDCAN06-2BLY | VBR = 38 V (higher threshold), VCL = 59 V @ 3 A, C = 15 pF | Targeted at 24 V commercial vehicle systems with wider supply margins | Choose for 24 V truck/bus ECUs needing higher standoff but accepting reduced clamping ratio |
Compared with ESDCAN01-2BLY and ESDCAN06-2BLY, ESDCAN04-2BLY offers optimal balance for 12 V automotive CAN-FD: tighter VBR tolerance (25.5–27.5 V), lowest clamping-to-breakdown ratio (1.56), and 19 pF capacitance enabling full 5 Mbps compliance without signal integrity compromise.
Availability
ESDCAN04-2BLY is available at Aetrix Electronics and suitable for automotive CAN-FD gateways, electric power steering units, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ESDCAN04-2BLY 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 ICs with vertical manufacturing and broad automotive qualification expertise.
ESDCAN04-2BLY belongs to ST's ESDCANxx-2BLY series - engineered specifically for dual-line, low-capacitance transient protection of high-speed automotive serial buses including CAN-FD, LIN, and FlexRay.
FAQ
What is the maximum operating junction temperature for ESDCAN04-2BLY?
The absolute maximum junction temperature is +150 °C, verified per J-STD-020 MSL Level 1 reflow profile and sustained under continuous 3.7 A 8/20 µs pulse conditions. Thermal derating begins above +125 °C, with VBR shifting predictably at 0.1 × 10−4/°C.
Does ESDCAN04-2BLY support CAN-FD data rates up to 5 Mbps?
Yes - its 19 pF junction capacitance, matched channel symmetry, and sub-1 ns response time preserve signal integrity at 5 Mbps. Measured S21 attenuation remains below −1 dB up to 100 MHz, confirming suitability for CAN-FD physical layer compliance.
How does ESDCAN04-2BLY differ from generic bi-directional TVS diodes?
Unlike general-purpose TVS devices, ESDCAN04-2BLY is AEC-Q101 qualified, features tightly matched VBR between IO1/IO2 (±0.5 V), guarantees ≤19 pF capacitance, and is validated against ISO 7637-3 Pulse 2a/3a/3b and ISO 10605 with multiple RC networks - all specified in DS11111 Rev 4.
Can ESDCAN04-2BLY be used for LIN bus protection?
Yes - its bidirectional operation, low 19 pF capacitance, and ±30 kV ESD rating make it suitable for LIN master/slave node protection. It meets LIN specification requirements for ESD immunity and introduces negligible propagation delay (<0.1 ns) on 20 kbps signals.
ESDCAN04-2BLY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- 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):
- 25.5V
- Voltage - Breakdown (Min):
- 27.5V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 3.7A (8/20µs)
- Power - Peak Pulse:
- 230W
- Power Line Protection:
- No
- Applications:
- CAN
- Capacitance @ Frequency:
- 17pF @ 1MHz
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ESDCAN04-2BLY FAQ
1.How can I place an order for ESDCAN04-2BLY through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDCAN04-2BLY 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 ESDCAN04-2BLY reliable?
The price and inventory of ESDCAN04-2BLY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDCAN04-2BLY is usually 5 days.
3.What payment methods are accepted for ESDCAN04-2BLY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDCAN04-2BLY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDCAN04-2BLY?
ESDCAN04-2BLY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDCAN04-2BLY 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 ESDCAN04-2BLY?
For technical support, including ESDCAN04-2BLY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDCAN04-2BLY requirements.
6.How does Aetrix verify that ESDCAN04-2BLY is sourced from the original manufacturer or authorized distributors?
All ESDCAN04-2BLY 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 ESDCAN04-2BLY meets industry standards.
7.What is the process for return or replacement of ESDCAN04-2BLY?
All ESDCAN04-2BLY units undergo pre-shipment inspection (PSI). If there is an issue with ESDCAN04-2BLY, 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 ESDCAN04-2BLY part is unused and in its original packaging.
Return procedure for ESDCAN04-2BLY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESDCAN04-2BLY Tags
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