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Vishay General Semiconductor - Diodes Division VESD26A2-03G-G3-08
- Part No.:
- VESD26A2-03G-G3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
VESD26A2-03G-G3-08.pdf
- Description:
- TVS DIODE 26VWM 48VC SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:12,938
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Product details
Overview
VESD26A2-03G-G3-08 from Vishay Semiconductors is a dual-line unidirectional ESD-protection diode array in SOT-323, designed for 26 V reverse stand-off voltage applications with 2.1 A peak pulse current handling and 43–48 V reverse clamping at 2.1 A (8/20 μs). It delivers <0.01 μA leakage at 26 V, 14–21 pF capacitance at 1 MHz, and operates from –55 °C to +150 °C - deployed in automotive infotainment data lines and industrial I/O interfaces.
For engineers reviewing the VESD26A2-03G-G3-08 datasheet, VESD26A2-03G-G3-08 pinout, VESD26A2-03G-G3-08 application, or VESD26A2-03G-G3-08 equivalent, this page provides verified electrical specs, package dimensions, ESD immunity levels (±20 kV contact/air), thermal limits, and real-world design meaning for high-reliability interface protection.
Technical Context
This device implements two independent unidirectional TVS diodes in a single SOT-323 package, each protecting one signal line referenced to ground (pins 1→3 and 2→3). Its 26 V VRWM and 29.1 V typical VBR (at 1 mA) define precise overvoltage triggering without false trips during normal 24 V system operation.
Clamping performance is characterized by 43–48 V VC at 2.1 A (8/20 μs), supported by 1.9 Ω dynamic resistance and low 17.5 pF typical capacitance - enabling robust ESD suppression while minimizing signal distortion on high-speed analog or digital lines up to ~100 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-off Voltage | 26 V - maximum continuous working voltage before conduction; ensures no interference with 24 V nominal systems. |
| Reverse Clamping Voltage | 43–48 V at 2.1 A (8/20 μs) - limits transient voltage seen by downstream ICs to safe levels during surge events. |
| Capacitance | 14–21 pF at 0 V, 1 MHz - low enough to avoid signal integrity degradation on USB 2.0, CAN FD, or RS-485 lines. |
| ESD Immunity | ±20 kV contact / ±20 kV air per IEC 61000-4-2 - meets automotive and industrial ESD robustness requirements. |
| Peak Pulse Current | 2.1 A (8/20 μs) per line - handles moderate surge energy without failure in non-power-line interfaces. |
| Operating Temperature | –55 °C to +150 °C - supports under-hood automotive and industrial control unit deployments. |
Pinout & Package
SOT-323 package: 3-terminal surface-mount plastic package with gull-wing leads, MSL level 1, 260 °C max soldering peak temperature, 5.2 mg weight, UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Channel 1 | Connects to protected signal line 1; conducts to ground (Pin 3) during positive transients. |
| Pin 2 | Anode of Channel 2 | Connects to protected signal line 2; conducts to ground (Pin 3) during positive transients. |
| Pin 3 | Cathode / Ground Reference | Common cathode tied to system ground; serves as return path for both ESD clamping paths. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional Dual-Channel Protection | Two independent anode-to-ground paths enable discrete protection of two signal lines without cross-talk. |
| AEC-Q101 Qualified Option Available | Variant VESD26A2-03GHG3A08 meets automotive stress-test requirements for under-hood use. |
| Low Dynamic Resistance | 1.9 Ω (TLP, 100 ns) ensures rapid voltage clamping and minimal overshoot during fast ESD events. |
| Sn (e3) Lead Plating | Tin termination enables compatibility with standard reflow profiles and automated optical inspection (AOI). |
| RoHS-Compliant & Halogen-Free | Meets EU RoHS Directive 2011/65/EU and IEC 61249-2-21 for environmentally constrained designs. |
Applications
| Automotive Infotainment Data Lines | Industrial RS-485 Interfaces |
|---|---|
Use Scenario: Protecting UART, LIN, or I²C lines between head unit and display modules in vehicles exposed to human-body ESD. IC Role / Device Role / Timing Role: Unidirectional clamping diode array placed directly at connector entry point to shunt ESD energy to chassis ground. Use Value: Prevents latch-up or damage to MCU GPIOs rated for only ±2 kV HBM by providing ±20 kV system-level ESD immunity. |
Use Scenario: Safeguarding differential RS-485 transceivers in factory automation PLCs connected to long cable runs. IC Role / Device Role / Timing Role: Front-end protection element on A/B bus lines, operating within common-mode range while preserving signal integrity. Use Value: Maintains <21 pF capacitance to avoid rise-time degradation on 10 Mbps RS-485 links while clamping surges to ≤48 V. |
| Medical Sensor Interface Ports | Smart Building Control Inputs |
Use Scenario: Shielding analog sensor inputs (e.g., thermistor, pressure bridge) in portable diagnostic devices from handling ESD. IC Role / Device Role / Timing Role: Low-leakage (<0.01 μA at 26 V) protection device placed before precision ADC front-end to avoid offset drift. Use Value: Enables stable DC accuracy in millivolt-range measurements without introducing measurable bias error from protection circuitry. |
Use Scenario: Securing dry-contact or 24 V digital input channels on HVAC controllers exposed to field technician ESD. IC Role / Device Role / Timing Role: Standoff-rated (26 V) clamp that remains fully inactive during normal 24 V logic detection, activating only during transients. Use Value: Eliminates need for external series resistors or RC filters, reducing BOM count and PCB area while meeting IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A | Single-channel, DO-214AC package; 30 A IPPM; higher capacitance (~400 pF); no SOT-323 footprint. | Requires board redesign; suited for power-line or lower-frequency protection where size is secondary. | Select when higher surge rating is needed and space allows larger package. |
| TPD2E001DRYR | 2-channel, SOT-553; 12 V VRWM; 12 pF typ; ±8 kV ESD; not AEC-Q101 qualified. | Limited to consumer-grade 3.3 V/5 V interfaces; insufficient for 24 V industrial or automotive use. | Choose only for cost-sensitive, low-voltage, non-automotive applications with relaxed ESD requirements. |
Compared with SMAJ26A and TPD2E001DRYR, VESD26A2-03G-G3-08 uniquely balances 26 V standoff, ±20 kV ESD rating, SOT-323 compactness, and AEC-Q101 readiness - making it the only option among the three qualified for space-constrained, high-reliability 24 V system interfaces.
Availability
VESD26A2-03G-G3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial RS-485 networks, and medical sensor interfaces requiring stable component supply across extended product lifecycles.
Supply support for VESD26A2-03G-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 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 VESDxxA2-03G family targets high-density, low-capacitance ESD protection for signal lines in harsh environments - engineered specifically for AEC-Q101 compliance, wide temperature operation, and seamless integration into compact PCB layouts.
FAQ
What is the maximum continuous reverse voltage the VESD26A2-03G-G3-08 can withstand?
The VESD26A2-03G-G3-08 has a reverse stand-off voltage (VRWM) of 26 V, meaning it blocks up to 26 V continuously without significant conduction. This makes it ideal for protecting 24 V nominal systems where transient-free operation is required during normal conditions. The device begins clamping above ~29.1 V (typical VBR at 1 mA), ensuring reliable margin against false triggering.
Does the VESD26A2-03G-G3-08 meet automotive qualification standards?
The base VESD26A2-03G-G3-08 is not AEC-Q101 qualified, but the variant VESD26A2-03GHG3A08 - differing only in environmental and quality codes - is explicitly AEC-Q101 qualified per the Vishay datasheet. Engineers selecting for automotive use must specify the 'H' suffix in the ordering code to ensure qualification compliance.
How does the capacitance of VESD26A2-03G-G3-08 affect high-speed signal integrity?
With a typical capacitance of 17.5 pF (range 14–21 pF at 0 V, 1 MHz), the VESD26A2-03G-G3-08 introduces minimal loading on signal lines. For example, on a 50 Ω RS-485 bus, this adds <0.5 ns rise-time degradation at 10 Mbps - well within specification limits. Its low capacitance enables use on USB 2.0 D+/D–, CAN FD, and other sub-100 MHz interfaces without equalization.
What is the clamping behavior of VESD26A2-03G-G3-08 under a full IEC 61000-4-5 surge?
Under IEC 61000-4-5 (8/20 μs waveform), the VESD26A2-03G-G3-08 clamps to 43–48 V at its rated 2.1 A peak pulse current. This clamping voltage is guaranteed across temperature and lifetime, protecting downstream transceivers rated for ≤50 V absolute maximum. Its 1.9 Ω dynamic resistance ensures fast response and minimal overshoot during the initial 100 ns of the surge event.
Can VESD26A2-03G-G3-08 be used for bidirectional signal protection?
No - VESD26A2-03G-G3-08 is strictly unidirectional: each channel conducts only from anode (Pin 1 or Pin 2) to cathode (Pin 3). It is unsuitable for AC-coupled or true bidirectional lines like USB D+ without external biasing. For bidirectional protection, Vishay offers the VESD26A2-03G's complementary part VESD26A2-03G-B, which uses a different internal configuration.
VESD26A2-03G-G3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 26V (Max)
- Voltage - Breakdown (Min):
- 27.6V
- Voltage - Clamping (Max) @ Ipp:
- 48V
- Current - Peak Pulse (10/1000µs):
- 2.1A (8/20µs)
- Power - Peak Pulse:
- 100W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 17.5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
VESD26A2-03G-G3-08 FAQ
1.How can I place an order for VESD26A2-03G-G3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VESD26A2-03G-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 VESD26A2-03G-G3-08 reliable?
The price and inventory of VESD26A2-03G-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 VESD26A2-03G-G3-08 is usually 5 days.
3.What payment methods are accepted for VESD26A2-03G-G3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VESD26A2-03G-G3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VESD26A2-03G-G3-08?
VESD26A2-03G-G3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VESD26A2-03G-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 VESD26A2-03G-G3-08?
For technical support, including VESD26A2-03G-G3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VESD26A2-03G-G3-08 requirements.
6.How does Aetrix verify that VESD26A2-03G-G3-08 is sourced from the original manufacturer or authorized distributors?
All VESD26A2-03G-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 VESD26A2-03G-G3-08 meets industry standards.
7.What is the process for return or replacement of VESD26A2-03G-G3-08?
All VESD26A2-03G-G3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VESD26A2-03G-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 VESD26A2-03G-G3-08 part is unused and in its original packaging.
Return procedure for VESD26A2-03G-G3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VESD26A2-03G-G3-08 Tags
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