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Vishay General Semiconductor - Diodes Division VESD33A2-03G-G3-08
- Part No.:
- VESD33A2-03G-G3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VESD33A2-03G-G3-08.pdf
- Description:
- TVS DIODE 33VWM 62.5VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:6,798
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Product details
Overview
VESD33A2-03G-G3-08 from Vishay Semiconductors is a dual-line unidirectional ESD-protection diode array in SOT-323 package, rated for 33 V reverse standoff voltage, 1.6 A peak pulse current (IEC 61000-4-5), and 15 kV contact/air ESD immunity (IEC 61000-4-2). It protects two signal lines in high-voltage industrial interfaces and automotive sensor buses.
For engineers reviewing the VESD33A2-03G-G3-08 datasheet, VESD33A2-03G-G3-08 pinout, VESD33A2-03G-G3-08 application, or VESD33A2-03G-G3-08 equivalent, this page delivers verified electrical specs, SOT-323 terminal mapping, real-world use cases, and validated alternative parts for high-reliability ESD protection design-in.
Technical Context
This device implements two independent unidirectional avalanche clamping diodes sharing a common cathode (pin 3), enabling bidirectional transient suppression on two signal paths with minimal capacitance (12–18 pF at 0 V). Its 33 V VRWM supports protection of 24 V and 32 V industrial control lines without leakage-induced false triggering.
The 56–62.5 V reverse clamping voltage at 1.6 A (8/20 μs) ensures robust overvoltage limiting while maintaining low dynamic resistance (3.6 Ω typical) to minimize voltage overshoot during fast transients. Operating from –55 °C to +150 °C and qualified per AEC-Q101 (H-grade option), it targets under-hood and factory-floor environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 33 V - Maximum continuous working voltage before clamping begins; sets upper limit for protected line voltage. |
| Reverse Clamping Voltage | 56–62.5 V at 1.6 A (8/20 μs) - Peak voltage seen by downstream circuit during worst-case surge; defines protection margin. |
| Capacitance | 12–18 pF at 0 V, 1 MHz - Low signal distortion for high-speed data lines (e.g., CAN FD, RS-485 up to 20 Mbps). |
| ESD Immunity | ±15 kV contact / ±15 kV air (IEC 61000-4-2) - Validated survivability against human-body-model discharges in harsh assembly and field environments. |
| Peak Pulse Power | 100 W (8/20 μs) - Sustained energy handling capability for repetitive surges in motor drive feedback or PLC I/O. |
| Operating Temperature | –55 °C to +150 °C - Enables deployment in engine control units, power inverters, and industrial automation enclosures. |
Pinout & Package
SOT-323 package: 3-pin surface-mount plastic case (2.2 mm × 1.35 mm × 0.95 mm), lead-free (Sn e3 plating), MSL level 1, compatible with standard reflow profiles (peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Channel 1 | Connects to first protected signal line (e.g., CAN_H); conducts transient current to common cathode during positive ESD event. |
| Pin 2 | Anode of Channel 2 | Connects to second protected signal line (e.g., CAN_L); operates independently but shares cathode for compact layout. |
| Pin 3 | Common Cathode | Return path for both channels; must be connected to system ground plane with low-inductance trace for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Dual unidirectional protection | Two independent anode-to-cathode paths enable precise voltage thresholding per line without cross-talk or shared breakdown drift. |
| Low 12–18 pF capacitance | Preserves signal integrity on 24 V analog sensor outputs and 10–20 Mbps digital buses without added rise-time degradation. |
| AEC-Q101 qualification option | H-grade variant available for automotive applications requiring validated reliability under thermal cycling, humidity, and vibration stress. |
| 15 kV IEC 61000-4-2 rating | Meets stringent ESD robustness requirements for industrial HMI panels, factory floor test equipment, and outdoor metering terminals. |
| SOT-323 footprint compatibility | Standardized 3-pin layout enables drop-in replacement across Vishay's VESDxxA2-03G family without PCB redesign. |
Applications
| Industrial Sensor Interface | Automotive CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting 24 V analog output lines (4–20 mA) and digital status signals from ESD events during field wiring or maintenance. IC Role / Device Role / Timing Role: Unidirectional clamping diode array providing low-leakage, high-threshold protection for two isolated signal paths sharing ground reference. Use Value: Prevents latch-up or damage to precision DACs and microcontroller GPIOs while maintaining <0.1 μA reverse leakage at 33 V operating voltage. |
Use Scenario: Safeguarding CAN_H and CAN_L lines in body control modules exposed to static discharge during connector mating or service operations. IC Role / Device Role / Timing Role: Dual-channel ESD suppressor with matched clamping characteristics ensuring differential signal integrity remains intact during transient events. Use Value: Delivers ±15 kV ESD immunity without degrading CAN bus timing margins or introducing >18 pF loading that could attenuate edge rates. |
| PLC Digital I/O Module | Smart Energy Meter Communication Port |
|
Use Scenario: Shielding dry-contact input and transistor-output circuits in programmable logic controllers from induced surges and operator-handling ESD. IC Role / Device Role / Timing Role: High-temperature-rated (–55 °C to +150 °C) dual-diode array placed at board edge to shunt transients before reaching isolation barriers or optocouplers. Use Value: Ensures uninterrupted operation in factory environments where ambient temperatures exceed 85 °C and ESD events occur frequently near metal enclosures. |
Use Scenario: Securing RS-485 or M-Bus communication ports in utility meters installed in outdoor cabinets subject to lightning-induced surges and seasonal humidity. IC Role / Device Role / Timing Role: Low-capacitance, high-VRWM ESD protector enabling reliable data transmission over long cable runs while meeting IEC 61000-4-2 Level 4 compliance. Use Value: Maintains signal fidelity up to 100 kbps over 1 km cables by limiting capacitive loading to ≤18 pF and clamping excursions to <63 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line unidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J33A | Single-channel, DO-214AC package; 33 V VRWM, 600 W peak power, 100 pF capacitance. | Requires two devices for dual-line protection; higher capacitance limits use in >1 Mbps data links. | Select when higher surge power (600 W vs. 100 W) is prioritized over board space and signal speed. |
| TPD2E001DRYR | Two-channel, SOT-553 package; 5 V VRWM, 12 pF capacitance, ±8 kV ESD rating. | Lower voltage rating restricts use to 3.3 V/5 V logic; insufficient for 24 V industrial lines. | Choose only for low-voltage digital interfaces (USB, I²C) where 33 V standoff is unnecessary. |
Compared with SMA6J33A and TPD2E001DRYR, VESD33A2-03G-G3-08 uniquely balances 33 V standoff, dual-channel integration in SOT-323, 15 kV ESD rating, and sub-18 pF capacitance-making it optimal for space-constrained, high-voltage industrial and automotive signal protection where single-device simplicity and signal integrity are critical.
Availability
VESD33A2-03G-G3-08 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive CAN bus nodes, PLC digital I/O modules, and smart energy meter communication ports requiring stable component supply across extended temperature ranges and high-reliability ESD performance.
Supply support for VESD33A2-03G-G3-08 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 semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with leadership in reliability-tested ESD protection solutions.
The VESDxxA2-03G family was designed specifically for dual-line, high-voltage ESD protection in automotive and industrial systems where compact size, AEC-Q101 qualification, and precise clamping thresholds are mandatory.
FAQ
What is the maximum reverse standoff voltage of the VESD33A2-03G-G3-08?
The VESD33A2-03G-G3-08 has a maximum reverse standoff voltage (VRWM) of 33 V, meaning it remains non-conductive up to this DC or continuous AC voltage level on protected lines. This allows safe integration into 24 V industrial control systems and 32 V automotive subsystems without leakage-induced false triggering or premature conduction.
Does the VESD33A2-03G-G3-08 meet AEC-Q101 qualification?
The base VESD33A2-03G-G3-08 is not AEC-Q101 qualified; however, the variant VESD33A2-03GHG3A08 (with 'H' in environmental code) is explicitly AEC-Q101 qualified and rated for automotive under-hood applications. Always verify the full part number suffix when selecting for automotive use.
How many protected signal lines does the VESD33A2-03G-G3-08 support?
The VESD33A2-03G-G3-08 supports exactly two independent signal lines via its dual-anode, common-cathode configuration (pins 1 and 2 as anodes, pin 3 as shared cathode). Each channel clamps unidirectionally, making it ideal for differential buses like CAN or isolated analog pairs without mutual interference.
What is the clamping voltage of the VESD33A2-03G-G3-08 under a 1.6 A transient?
Under an 8/20 μs IEC 61000-4-5 surge current of 1.6 A, the VESD33A2-03G-G3-08 clamps to 56–62.5 V (typical 59 V) in reverse direction. This value defines the maximum overvoltage imposed on downstream circuitry and confirms robust protection for 3.3 V/5 V receivers paired with external voltage translators or level shifters.
Is the VESD33A2-03G-G3-08 RoHS-compliant and lead-free?
Yes, the VESD33A2-03G-G3-08 is RoHS-compliant and features lead-free terminations with Sn (e3) plating, fully compatible with standard reflow soldering processes. Its MSL level 1 rating permits unlimited floor life, and peak temperature tolerance is specified up to 260 °C per J-STD-020.
VESD33A2-03G-G3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33V (Max)
- Voltage - Breakdown (Min):
- 35.5V
- Voltage - Clamping (Max) @ Ipp:
- 62.5V
- Current - Peak Pulse (10/1000µs):
- 1.6A (8/20µs)
- Power - Peak Pulse:
- 100W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 15pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VESD33A2-03G-G3-08 FAQ
1.How can I place an order for VESD33A2-03G-G3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VESD33A2-03G-G3-08 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 VESD33A2-03G-G3-08 reliable?
The price and inventory of VESD33A2-03G-G3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VESD33A2-03G-G3-08 is usually 5 days.
3.What payment methods are accepted for VESD33A2-03G-G3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VESD33A2-03G-G3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VESD33A2-03G-G3-08?
VESD33A2-03G-G3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VESD33A2-03G-G3-08 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 VESD33A2-03G-G3-08?
For technical support, including VESD33A2-03G-G3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VESD33A2-03G-G3-08 requirements.
6.How does Aetrix verify that VESD33A2-03G-G3-08 is sourced from the original manufacturer or authorized distributors?
All VESD33A2-03G-G3-08 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 VESD33A2-03G-G3-08 meets industry standards.
7.What is the process for return or replacement of VESD33A2-03G-G3-08?
All VESD33A2-03G-G3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VESD33A2-03G-G3-08, 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 VESD33A2-03G-G3-08 part is unused and in its original packaging.
Return procedure for VESD33A2-03G-G3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VESD33A2-03G-G3-08 Tags
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