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Vishay VCAN33A2-03SHE3A08
- Part No.:
- VCAN33A2-03SHE3A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VCAN33A2-03SHE3A08.pdf
- Description:
- ESD PROTECTION DIODE SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:14,890
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Product details
Overview
VCAN33A2-03SHE3A08 from Vishay Semiconductors is a bidirectional symmetrical (BiSy) dual-line ESD protection diode in SOT-23 package, designed for CAN-bus interface protection. It delivers ±33 V working voltage, <0.05 μA reverse leakage, <9.7 pF line capacitance, ±30 kV IEC 61000-4-2 ESD immunity, and AEC-Q101 qualification for automotive applications.
For engineers reviewing the VCAN33A2-03SHE3A08 datasheet, VCAN33A2-03SHE3A08 pinout, VCAN33A2-03SHE3A08 application, or VCAN33A2-03SHE3A08 equivalent, key selection criteria include low-capacitance dual-line clamping, CAN-bus voltage compliance, AEC-Q101 qualification, SOT-23 footprint compatibility, and ±30 kV contact/air discharge robustness.
Technical Context
This device implements a symmetrical dual-channel TVS architecture with matched diode pairs between pins 1–3 and 2–3, enabling bidirectional transient suppression on two independent CAN signal lines. Its clamping behavior is characterized by 44–47 V at 1 A (8/20 μs) and 50–56 V at 2.7 A peak pulse current.
The VCAN33A2-03SHE3A08 operates across –55 °C to +150 °C junction temperature, supports MSL level 1 soldering (peak 260 °C), and features e3 tin-plated terminations. Diode capacitance matching is ≤1 pF across –40 °C to +125 °C, critical for differential CAN signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protection Lines | 2 independent bidirectional channels (pins 1–3 and 2–3) |
| Reverse Stand-off Voltage | 33 V - defines maximum continuous CAN bus common-mode voltage before conduction |
| Clamping Voltage (1 A, 8/20 μs) | 44–47 V - limits transient overvoltage seen by downstream CAN transceiver |
| Capacitance per Line | 8.7–9.7 pF at 0 V, 1 MHz - preserves CAN FD signal rise/fall times & impedance matching |
| ESD Immunity | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - exceeds automotive OEM ESD requirements |
| AEC-Q101 Qualification | Qualified - validated for automotive under-hood and body control module environments |
| Leakage Current | <0.05 μA at 33 V - avoids signal distortion or bias shift in high-impedance CAN receivers |
Pinout & Package
SOT-23 package (3-pin, standard footprint), 9.2 mg weight, UL 94 V-0 molding compound, MSL level 1, compatible with standard SOT-23 PCB land pattern per Vishay S8-V-3929.01-009.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Channel 1 | Connects to CAN_H or first protected signal line; forms symmetrical clamp path with Pin 3 |
| Pin 2 | Anode of Channel 2 | Connects to CAN_L or second protected signal line; forms symmetrical clamp path with Pin 3 |
| Pin 3 | Cathode (Common) | Shared cathode node tied to ground or chassis; enables compact dual-line layout without discrete grounds |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Symmetrical Clamping | Enables identical positive/negative transient suppression on both CAN lines without polarity sensitivity |
| Dual-Line Integration in SOT-23 | Reduces board space vs. two discrete single-line protectors; maintains CAN differential pair routing symmetry |
| ≤1 pF Capacitance Matching | Minimizes skew between CAN_H and CAN_L clamping response, preserving differential timing integrity |
| AEC-Q101 Qualified Construction | Validated for automotive thermal cycling, humidity, and mechanical shock per stress test requirements |
| e3 Tin Plating | RoHS-compliant, lead-free termination compatible with standard reflow profiles and long-term solder joint reliability |
Applications
| Automotive CAN Bus Nodes | Industrial CANopen Networks |
|---|---|
Use Scenario: Protection of ECUs, sensors, and actuators connected to 12 V/24 V vehicle CAN networks exposed to load dump, jump-start, and ESD events. IC Role / Device Role / Timing Role: Dual-line transient voltage suppressor placed directly at connector entry point before CAN transceiver. Use Value: Prevents damage to ISO 11898-2 compliant transceivers while maintaining <10 pF loading for 500 kbps–2 Mbps CAN FD operation. | Use Scenario: ESD and surge protection for programmable logic controllers (PLCs), HMIs, and motor drives using CANopen in factory automation. IC Role / Device Role / Timing Role: Front-end protector on field-side CAN bus connectors subject to operator touch and cable coupling transients. Use Value: Delivers ±30 kV ESD robustness without degrading signal edge rates, supporting deterministic real-time communication in noise-prone environments. |
| Commercial Vehicle Telematics | Off-Highway Equipment Control |
Use Scenario: Securing GPS, cellular, and fleet management modules interfacing with J1939 backbone in trucks and buses. IC Role / Device Role / Timing Role: Secondary-level protection cascaded after common-mode chokes, absorbing residual fast transients. Use Value: Ensures uninterrupted data logging and remote diagnostics despite repeated electrostatic discharges during service access. | Use Scenario: Protecting CAN interfaces in construction, agricultural, and mining machinery operating in dusty, humid, and vibration-intensive conditions. IC Role / Device Role / Timing Role: Ruggedized interface guard for displays, joysticks, and engine controllers sharing a single CAN backbone. Use Value: Maintains functional safety integrity through extended temperature range (–55 °C to +150 °C) and AEC-Q101 reliability validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line CAN bus ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUP2114L | Lower clamping voltage (40 V typ. @ 1 A), higher capacitance (12 pF), non-AEC-Q101 qualified | Targeted at industrial/commercial CAN, not automotive-grade reliability testing | Preferred where lower clamping is prioritized over automotive qualification and capacitance budget |
| Infineon ESD204-B1-W05 | Single-line device (requires two units), 3.3 V VRWM, 0.5 pF capacitance - not voltage-compatible with 33 V CAN | Designed for low-voltage data lines (USB, I²C), not 12/24 V CAN bus systems | Not suitable as direct alternative; only viable if redesigning to lower-voltage signaling architecture |
Compared with NUP2114L and ESD204-B1-W05, the VCAN33A2-03SHE3A08 uniquely combines AEC-Q101 qualification, 33 V stand-off, sub-10 pF capacitance, and integrated dual-line topology - making it the only drop-in solution for production automotive CAN nodes requiring full compliance and minimal board area.
Availability
VCAN33A2-03SHE3A08 is available at Aetrix Electronics and suitable for automotive ECU design, industrial CANopen gateway development, and off-highway telematics integration requiring stable component supply and long-term lifecycle support.
Supply support for VCAN33A2-03SHE3A08 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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The VCAN series is engineered specifically for CAN bus physical layer protection, emphasizing low capacitance, symmetrical clamping, and AEC-Q101 qualification to meet stringent automotive EMC and durability requirements.
FAQ
What is the primary circuit role of the VCAN33A2-03SHE3A08 in a CAN bus system?
The VCAN33A2-03SHE3A08 serves as a dual-line bidirectional ESD and transient voltage suppressor placed at the CAN_H/CAN_L interface before the transceiver. It clamps fast transients (e.g., ESD, inductive spikes) to safe levels while adding minimal capacitive loading - ensuring signal integrity and protecting downstream ICs. Its symmetrical structure maintains differential balance critical for CAN timing.
Does the VCAN33A2-03SHE3A08 support CAN FD data rates up to 5 Mbps?
Yes, the VCAN33A2-03SHE3A08 supports CAN FD operation due to its typical 8.7–9.7 pF capacitance per line at 0 V and 1 MHz, which preserves signal edge fidelity required for 2–5 Mbps bit rates. Its matched capacitance (<1 pF difference between lines) minimizes skew, and its clamping response time is sufficiently fast to suppress transients without distorting FD waveforms.
Is the VCAN33A2-03SHE3A08 pin-compatible with other dual-line SOT-23 ESD protectors?
The VCAN33A2-03SHE3A08 uses standard SOT-23 pinout (Pin 1 = CH1 anode, Pin 2 = CH2 anode, Pin 3 = common cathode), matching industry convention for dual-line protectors. However, pin compatibility alone does not guarantee functional equivalence - always verify VRWM, clamping voltage, and capacitance against system requirements before substitution.
What does "BiSy" mean in the context of the VCAN33A2-03SHE3A08?
"BiSy" stands for Bidirectional Symmetrical - indicating that each protection channel (Pin 1–3 and Pin 2–3) exhibits identical clamping characteristics for both positive and negative transients. This symmetry ensures balanced suppression on CAN_H and CAN_L, preventing common-mode shifts and preserving differential receiver thresholds during ESD events.
How does the VCAN33A2-03SHE3A08 differ from single-line ESD protectors like the VCAN33A1-03SHE3A08?
The VCAN33A2-03SHE3A08 integrates two independent protection channels in one SOT-23 package, whereas the VCAN33A1-03SHE3A08 protects only one line. Using the VCAN33A2-03SHE3A08 eliminates the need for two separate devices, reduces PCB area by ~40%, improves layout symmetry, and ensures matched thermal and electrical performance between CAN_H and CAN_L paths.
VCAN33A2-03SHE3A08 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):
- 33V (Max)
- Voltage - Breakdown (Min):
- 36V
- Voltage - Clamping (Max) @ Ipp:
- 56V
- Current - Peak Pulse (10/1000µs):
- 2.7A (8/20µs)
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- No
- Applications:
- CAN
- Capacitance @ Frequency:
- 8.7pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VCAN33A2-03SHE3A08 FAQ
1.How can I place an order for VCAN33A2-03SHE3A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VCAN33A2-03SHE3A08 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 VCAN33A2-03SHE3A08 reliable?
The price and inventory of VCAN33A2-03SHE3A08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VCAN33A2-03SHE3A08 is usually 5 days.
3.What payment methods are accepted for VCAN33A2-03SHE3A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VCAN33A2-03SHE3A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VCAN33A2-03SHE3A08?
VCAN33A2-03SHE3A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VCAN33A2-03SHE3A08 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 VCAN33A2-03SHE3A08?
For technical support, including VCAN33A2-03SHE3A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VCAN33A2-03SHE3A08 requirements.
6.How does Aetrix verify that VCAN33A2-03SHE3A08 is sourced from the original manufacturer or authorized distributors?
All VCAN33A2-03SHE3A08 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 VCAN33A2-03SHE3A08 meets industry standards.
7.What is the process for return or replacement of VCAN33A2-03SHE3A08?
All VCAN33A2-03SHE3A08 units undergo pre-shipment inspection (PSI). If there is an issue with VCAN33A2-03SHE3A08, 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 VCAN33A2-03SHE3A08 part is unused and in its original packaging.
Return procedure for VCAN33A2-03SHE3A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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