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Vishay VCAN26A2-03SHE3A18
- Part No.:
- VCAN26A2-03SHE3A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VCAN26A2-03SHE3A18.pdf
- Description:
- ESD PROTECTION DIODE SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
VCAN26A2-03SHE3A18 from Vishay Semiconductors is a bidirectional symmetrical (BiSy) dual-line ESD protection diode in SOT-23 package, designed for CAN and FLEX-Bus interfaces. It provides ±30 kV IEC 61000-4-2 contact/air discharge immunity, 26.5 V reverse stand-off voltage, <13 pF capacitance, and <0.05 μA leakage current - enabling robust signal integrity in automotive communication networks.
For engineers reviewing the VCAN26A2-03SHE3A18 datasheet, VCAN26A2-03SHE3A18 pinout, VCAN26A2-03SHE3A18 application, or VCAN26A2-03SHE3A18 equivalent, key selection criteria include low clamping voltage at 3 A (≤50 V), matched diode capacitance (<1.5 pF mismatch), AEC-Q101 qualification, and SOT-23 footprint compatibility with CAN transceiver I/O lines.
Technical Context
This device implements two independent, symmetrical TVS diodes in a single SOT-23-3 package, each protecting one CAN bus line (CANH/CANL) against transient overvoltage. Its BiSy architecture ensures identical clamping behavior in both polarities without requiring external biasing.
It operates across –55 °C to +150 °C junction temperature, supports peak pulse power of 150 W per line (IEC 61000-4-5, 8/20 μs), and maintains tight capacitance matching (<1.5 pF difference between channels) over full temperature range - critical for high-speed differential signaling integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-off Voltage | 26.5 V - maximum continuous working voltage before conduction begins; matches nominal CAN bus common-mode range. |
| ESD Immunity | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - exceeds automotive OEM requirements for infotainment and body control modules. |
| Clamping Voltage @ 3 A | ≤50 V (typ. 39 V) - limits transient overvoltage seen by downstream CAN transceiver during surge events. |
| Diode Capacitance | 10–13 pF @ 0 V, 1 MHz - low enough to avoid signal rise-time degradation on 1 Mbps CAN FD links. |
| Capacitance Matching | ≤1.5 pF difference between channels - preserves differential impedance balance and common-mode rejection. |
| Leakage Current | ≤0.05 μA @ 26.5 V - negligible DC loading on CAN bus termination resistors and transceiver inputs. |
| Peak Pulse Power | 150 W per line (8/20 μs, IEC 61000-4-5) - withstands severe load-dump and inductive switching transients. |
Pinout & Package
SOT-23-3 package (JEDEC TO-236AB), 9.2 mg weight, UL 94 V-0 molding compound, MSL level 1, compatible with standard reflow profiles (peak ≤260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Channel 1 (Line 1) | Connects to CANH or first protected signal line; bidirectional clamping path to common cathode. |
| Pin 2 | Anode of Channel 2 (Line 2) | Connects to CANL or second protected signal line; independent but matched clamping path. |
| Pin 3 | Common Cathode | Shared ground reference for both protection paths; must be connected to system ground plane with low-inductance trace. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Symmetrical (BiSy) Architecture | Identical clamping thresholds in both polarities eliminate need for polarity-aware layout or external biasing. |
| AEC-Q101 Qualified | Validated for automotive under-hood and cabin applications including engine control, ADAS sensors, and gateway ECUs. |
| e3 Tin-Plated Terminations | Lead (Pb)-free, RoHS-compliant terminations compatible with standard SnAgCu reflow processes. |
| Low Capacitance Matching | ≤1.5 pF inter-channel capacitance mismatch preserves differential signal fidelity and reduces EMI susceptibility. |
| High Surge Robustness | 150 W peak pulse power rating per channel meets ISO 7637-3 and IEC 61000-4-5 Level 4 test requirements. |
Applications
| Automotive CAN Bus Protection | FLEX-Bus Interface Protection |
|---|---|
Use Scenario: Protecting CANH/CANL lines in vehicle body control modules exposed to ESD from service personnel and load-dump transients from alternator regulation. IC Role / Device Role / Timing Role: Dual-line transient voltage suppressor placed directly at connector entry point, upstream of CAN transceiver. Use Value: Prevents latch-up or permanent damage to CAN transceivers while maintaining <13 pF loading to preserve 1 Mbps timing margins. | Use Scenario: Securing FLEX-Bus data lines in industrial programmable logic controllers where field wiring introduces fast-rising ESD and inductive spikes. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp integrated into PCB-level I/O protection network. Use Value: Enables reliable operation up to 2 Mbps FLEX-Bus signaling without signal distortion or jitter increase. |
| Automotive Gateway ECU | ADAS Sensor Interface |
Use Scenario: Shielding multi-protocol gateway ECUs that route CAN, LIN, and Ethernet traffic, where ESD coupling between adjacent traces is a risk. IC Role / Device Role / Timing Role: Per-signal-pair ESD guard for CAN physical layer interface, minimizing crosstalk-induced false triggers. Use Value: Reduces system-level ESD failure rate by >90% in gateways validated per ISO 10605 (150 pF/330 Ω). | Use Scenario: Protecting radar or camera sensor CAN/FlexRay interfaces mounted near metallic chassis surfaces prone to human-body-model ESD. IC Role / Device Role / Timing Role: Front-end transient suppressor co-located with sensor-side CAN transceiver. Use Value: Maintains <1.5 pF capacitance mismatch to prevent skew-induced bit errors in time-critical ADAS message streams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SEMTECH RCLAMP0524P.TCT | Lower clamping voltage (≤33 V @ 1 A), higher capacitance (15 pF), not AEC-Q101 qualified. | Targeted at consumer USB/PCIe interfaces; lacks automotive thermal and surge validation. | Select when lower clamping priority outweighs automotive qualification and capacitance budget. |
| LITTELFUSE SP1003-01WTG | Single-line device (requires two units), 12 pF typical capacitance, AEC-Q101 qualified, ±30 kV ESD rating. | Requires additional board area and routing complexity; no inherent capacitance matching between channels. | Choose only if discrete placement flexibility is needed and matched capacitance is not required. |
Compared with RCLAMP0524P.TCT and SP1003-01WTG, VCAN26A2-03SHE3A18 uniquely delivers AEC-Q101 qualification, matched dual-channel capacitance (<1.5 pF), and optimized 26.5 V stand-off in a single SOT-23 - reducing BOM count and layout risk in automotive CAN designs.
Availability
VCAN26A2-03SHE3A18 is available at Aetrix Electronics and suitable for automotive CAN bus protection, FLEX-Bus interface hardening, and ADAS sensor interface shielding requiring stable component supply and long-term lifecycle support.
Supply support for VCAN26A2-03SHE3A18 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
Vishay Intertechnology is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability solutions for automotive, industrial, and computing markets.
The VCAN series is engineered specifically for high-speed serial bus protection in automotive environments, balancing low capacitance, precise voltage clamping, and AEC-Q101 stress validation to meet OEM ESD and EMC requirements.
FAQ
What is the primary circuit role of the VCAN26A2-03SHE3A18 in a CAN system?
The VCAN26A2-03SHE3A18 serves as a dual-line bidirectional ESD protection diode placed at the physical interface between the CAN connector and transceiver. It clamps transient overvoltages - such as IEC 61000-4-2 ESD strikes or IEC 61000-4-5 surges - before they reach the sensitive input stages of the CAN transceiver, preserving signal integrity and preventing latch-up or permanent damage. Its matched capacitance ensures minimal skew between CANH and CANL lines.
Does the VCAN26A2-03SHE3A18 require external biasing or direction-specific layout?
No. The VCAN26A2-03SHE3A18 uses a bidirectional symmetrical (BiSy) architecture with identical clamping characteristics in both polarities. Pin 1 and Pin 2 serve as anodes for independent protection channels, while Pin 3 is the common cathode tied to system ground - eliminating the need for polarity-aware routing or external biasing components. This simplifies PCB layout and improves design reuse across CANH/CANL and FLEX-Bus line pairs.
Is the VCAN26A2-03SHE3A18 qualified for automotive under-hood applications?
Yes. The VCAN26A2-03SHE3A18 is AEC-Q101 qualified and rated for junction temperatures from –55 °C to +150 °C. Its SOT-23 package uses UL 94 V-0 molding compound and meets MSL level 1 moisture sensitivity requirements - making it suitable for under-hood locations including engine control units, battery management systems, and radar modules where thermal and mechanical stress are elevated.
How does the capacitance matching specification benefit CAN FD implementations?
The VCAN26A2-03SHE3A18 guarantees ≤1.5 pF capacitance mismatch between its two protection channels across –40 °C to +125 °C. This tight matching prevents differential skew and preserves common-mode rejection ratio (CMRR), which is essential for reliable decoding of high-speed CAN FD frames (up to 5 Mbps). Unmatched capacitance would distort edge alignment and increase bit error rates - especially in longer bus topologies or noisy environments.
What is the maximum peak pulse current the VCAN26A2-03SHE3A18 can handle per channel?
The VCAN26A2-03SHE3A18 is rated for 3 A peak pulse current per channel under IEC 61000-4-5 (8/20 μs waveform) at 25 °C. At this current level, its clamping voltage remains ≤50 V (typ. 39 V), ensuring downstream CAN transceivers remain within safe operating voltage limits. This rating supports compliance with ISO 7637-3 Pulse 5a/b and IEC 61000-4-5 Level 4 surge immunity testing.
VCAN26A2-03SHE3A18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- 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):
- 26.5V (Max)
- Voltage - Breakdown (Min):
- 28V
- Voltage - Clamping (Max) @ Ipp:
- 50V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- No
- Applications:
- CAN
- Capacitance @ Frequency:
- 10pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VCAN26A2-03SHE3A18 FAQ
1.How can I place an order for VCAN26A2-03SHE3A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VCAN26A2-03SHE3A18 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 VCAN26A2-03SHE3A18 reliable?
The price and inventory of VCAN26A2-03SHE3A18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VCAN26A2-03SHE3A18 is usually 5 days.
3.What payment methods are accepted for VCAN26A2-03SHE3A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VCAN26A2-03SHE3A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VCAN26A2-03SHE3A18?
VCAN26A2-03SHE3A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VCAN26A2-03SHE3A18 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 VCAN26A2-03SHE3A18?
For technical support, including VCAN26A2-03SHE3A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VCAN26A2-03SHE3A18 requirements.
6.How does Aetrix verify that VCAN26A2-03SHE3A18 is sourced from the original manufacturer or authorized distributors?
All VCAN26A2-03SHE3A18 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 VCAN26A2-03SHE3A18 meets industry standards.
7.What is the process for return or replacement of VCAN26A2-03SHE3A18?
All VCAN26A2-03SHE3A18 units undergo pre-shipment inspection (PSI). If there is an issue with VCAN26A2-03SHE3A18, 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 VCAN26A2-03SHE3A18 part is unused and in its original packaging.
Return procedure for VCAN26A2-03SHE3A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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