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Vishay General Semiconductor - Diodes Division VGSOT08-G3-08
- Part No.:
- VGSOT08-G3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT08-G3-08.pdf
- Description:
- TVS DIODE 8VWM 19.2VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,590
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Product details
Overview
VGSOT08-G3-08 from Vishay Semiconductors is a unidirectional single-line ESD protection diode in SOT-23 package, designed for transient suppression on data/signal lines with 8 V reverse stand-off voltage (VRWM), ±30 kV IEC 61000-4-2/ISO 10605 ESD immunity, and 500 W peak pulse power (8/20 μs). It delivers low forward clamping (≤3.2 V at 28 A) and 175–250 pF capacitance at 0 V bias, enabling robust protection in USB 2.0, HDMI, and industrial I/O interfaces.
For engineers reviewing the VGSOT08-G3-08 datasheet, VGSOT08-G3-08 pinout, VGSOT08-G3-08 application, or VGSOT08-G3-08 equivalent, this page provides verified electrical parameters, BiAs-mode clamping behavior, SOT-23 terminal mapping, automotive-grade AEC-Q101 qualification status, and real-world use cases in high-speed interface protection where low capacitance and precise VRWM alignment are critical.
Technical Context
VGSOT08-G3-08 operates in Bidirectional Asymmetrical (BiAs) protection mode: pin 1 grounded, pin 3 connected to protected line. During positive transients, it conducts above 9–11 V breakdown (VBR), clamping to ≤18 V at 28 A (8/20 μs); during negative transients, it forward-clamps to ≤3.2 V at same current. Its 5 μA max reverse leakage at 8 V ensures minimal signal loading in standby.
The device uses silicon avalanche diode structure optimized for fast response (<1 ns), achieves MSL level 1 moisture sensitivity, and maintains stable performance from −55 °C to +150 °C junction temperature. Its 175–250 pF capacitance at 0 V (reducing to ≤30 pF at 4 V bias) supports signal integrity in 480 Mbps USB 2.0 channels without excessive rise-time degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 8 V - Maximum continuous working voltage before conduction; sets upper limit for safe operation in 5 V or 3.3 V rail-referenced data lines. |
| VBR (min/typ/max) | 9 / 10 / 11 V - Reverse breakdown threshold; defines onset of clamping for positive ESD events and determines minimum overvoltage margin. |
| VC @ 28 A (8/20 μs) | ≤18 V - Peak clamping voltage under worst-case surge; directly limits stress on downstream IC I/O pins. |
| VF @ 28 A (8/20 μs) | ≤3.2 V - Forward clamping level during negative transients; keeps negative excursions near ground, protecting against latch-up. |
| Capacitance @ 0 V / 4 V | 175–250 pF / ≤30 pF - Signal-line loading at DC vs. operating bias; low bias-dependent variation preserves impedance matching in AC-coupled paths. |
| ESD Immunity | ±30 kV contact/air (IEC 61000-4-2 & ISO 10605) - Validated survivability against human-body and system-level ESD events in end-equipment testing. |
| AEC-Q101 Qualified | Yes - Certified for automotive applications including infotainment and body electronics requiring extended temperature and reliability validation. |
Pinout & Package
SOT-23 plastic surface-mount package (9.2 mg weight, UL 94 V-0 molding compound, MSL level 1, peak soldering temperature 260 °C). Dimensions: 2.9 × 1.3 × 1.01 mm (L × W × H), 0.95 mm lead pitch, 0.4 mm lead width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground (Anode common) | Low-inductance return path for transient current; must be connected to solid ground plane for effective clamping. |
| Pin 2 | No Connection (NC) | Internally unconnected; electrically isolated and must not be tied to any net to avoid parasitic coupling. |
| Pin 3 | Protected Line (Cathode) | Input/output node for signal/data line; placed in series between connector and IC I/O to shunt transients to Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-mode clamping | Asymmetric forward/reverse clamping (≤3.2 V / ≤18 V) enables precise protection of rail-referenced signals without bidirectional voltage swing. |
| AEC-Q101 qualification | Validated for automotive environments including thermal cycling, humidity exposure, and mechanical shock per AEC standard. |
| e3 Sn termination | RoHS-compliant matte tin plating ensures reliable solderability and eliminates lead-based contamination risks in high-reliability assembly. |
| Low leakage at VRWM | ≤5 μA at 8 V reverse bias minimizes standby power loss and prevents false triggering in battery-powered sensor nodes. |
| High surge robustness | 28 A peak pulse current (8/20 μs) and 500 W pulse power withstand repeated lightning-induced surges in industrial fieldbus interfaces. |
Applications
| USB 2.0 Data Lines | HDMI DDC/CEC Channels |
|---|---|
Use Scenario: Protecting differential USB 2.0 D+/D− traces from ESD events during hot-plug insertion in portable docking stations. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between connector and USB transceiver PHY, referenced to system ground. Use Value: 175–250 pF capacitance avoids signal integrity degradation at 480 Mbps, while ±30 kV ESD rating exceeds IEC 61000-4-2 Level 4 requirements. |
Use Scenario: Safeguarding HDMI DDC (I²C) and CEC control lines in AV receivers exposed to user-handling ESD in living-room environments. IC Role / Device Role / Timing Role: Single-line ESD clamp on each control line, leveraging 8 V VRWM to match 3.3 V I²C logic levels without false triggering. Use Value: ≤5 μA reverse leakage preserves I²C bus pull-up efficiency; ≤3.2 V forward clamping prevents negative undershoot from damaging controller GPIOs. |
| Automotive Body Control Modules | Industrial RS-485 Transceivers |
Use Scenario: Protecting LIN bus or switch inputs in door module ECUs subjected to ESD in vehicle assembly and service environments. IC Role / Device Role / Timing Role: Point-of-entry ESD suppressor on external harness connectors, qualified to AEC-Q101 for under-hood temperature cycling. Use Value: −55 °C to +150 °C operating range ensures functionality across engine bay thermal extremes; 500 W pulse rating handles load-dump induced transients. |
Use Scenario: Shielding RS-485 driver/receiver I/O pins in factory automation gateways connected to long cable runs prone to induced surges. IC Role / Device Role / Timing Role: Low-capacitance clamp on A/B differential pair, using BiAs-mode to maintain common-mode noise rejection during positive/negative transients. Use Value: ≤30 pF capacitance at 4 V bias minimizes skew between differential signals; 28 A surge rating exceeds IEC 61000-4-5 Level 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | Higher VRWM (8.0 V), but bidirectional configuration and 600 W PPPM (8/20 μs); larger SMA package (4.5 × 2.7 mm). | Requires PCB layout change; suited for higher-energy surges but lacks BiAs-mode precision for low-voltage data lines. | Select when surge energy exceeds 500 W or board space allows SMA footprint; avoid for USB/HDMI due to bidirectional clamping and higher capacitance (≈400 pF). |
| TPD2E001DRSR | Lower VRWM (5.5 V), dual-channel, 12 pF typical capacitance at 0 V; QFN-6 package with integrated 0 Ω resistors. | Designed for ultra-high-speed interfaces (USB 3.0+); not AEC-Q101 qualified and rated only to ±8 kV ESD. | Prefer for space-constrained, high-frequency designs needing <15 pF loading; reject for automotive or ±30 kV compliance-critical systems. |
Compared with SMAJ8.0A and TPD2E001DRSR, VGSOT08-G3-08 uniquely balances AEC-Q101 qualification, ±30 kV ESD immunity, BiAs-mode clamping, and SOT-23 compactness-making it optimal for automotive and industrial data-line protection where VRWM alignment, low leakage, and standardized footprint are mandatory.
Availability
VGSOT08-G3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive body electronics, and industrial RS-485 transceiver safeguarding requiring stable component supply across production lifecycles.
Supply support for VGSOT08-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.
VGSOT08-G3-08 belongs to Vishay's VGSOTxx family of unidirectional ESD suppressors engineered specifically for high-reliability signal-line protection in automotive, industrial, and consumer electronics where precise VRWM matching and AEC-Q101 compliance are required.
FAQ
What is the maximum reverse working voltage (VRWM) of VGSOT08-G3-08?
The VGSOT08-G3-08 has a maximum reverse working voltage (VRWM) of 8 V, meaning it remains non-conductive up to this DC or steady-state AC voltage level on the protected line (Pin 3) relative to ground (Pin 1). This value is confirmed in the Electrical Characteristics table for VGSOT08 on page 6 of Vishay document 86326, ensuring compatibility with 5 V and 3.3 V logic systems without leakage-induced errors.
Does VGSOT08-G3-08 meet automotive qualification standards?
Yes, VGSOT08-G3-08 is AEC-Q101 qualified, as explicitly stated in the FEATURES section and PACKAGE DATA table of Vishay document 86326. This qualification covers stress tests including temperature cycling, humidity bias, mechanical shock, and ESD robustness-validating its suitability for automotive body control modules, infotainment interfaces, and other under-hood or cabin-mounted electronics.
What is the clamping voltage of VGSOT08-G3-08 under a 28 A 8/20 μs surge?
Under a 28 A 8/20 μs surge (the absolute maximum peak pulse current for VGSOT08), the reverse clamping voltage (VC) of VGSOT08-G3-08 is guaranteed ≤18 V, with typical performance around 14.4 V. This value is specified in the ELECTRICAL CHARACTERISTICS table for VGSOT08 on page 6 of Vishay document 86326 and defines the upper voltage limit imposed on protected circuitry during worst-case transients.
How does the BiAs-mode operation of VGSOT08-G3-08 improve protection performance?
VGSOT08-G3-08 uses Bidirectional Asymmetrical (BiAs) mode: it clamps positive transients above ~10 V (VBR) to ≤18 V, while negative transients forward-bias the diode to ≤3.2 V. This asymmetry-documented in the "BiAs-MODE" section on page 5-enables tighter voltage control on rail-referenced lines, preventing both overvoltage damage and negative undershoot that could trigger latch-up in CMOS I/O stages.
What is the capacitance of VGSOT08-G3-08 at zero bias, and why does it matter?
VGSOT08-G3-08 exhibits 175–250 pF capacitance at 0 V reverse bias (f = 1 MHz), per the ELECTRICAL CHARACTERISTICS table on page 6. This value directly impacts signal integrity: in USB 2.0 (480 Mbps) or HDMI DDC (100 kHz I²C), excessive capacitance causes rise-time degradation and bit errors. The specified range ensures compatibility while remaining low enough to avoid timing violations in these protocols.
VGSOT08-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V (Max)
- Voltage - Breakdown (Min):
- 9V
- Voltage - Clamping (Max) @ Ipp:
- 18V
- Current - Peak Pulse (10/1000µs):
- 28A (8/20µs)
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 175pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT08-G3-08 FAQ
1.How can I place an order for VGSOT08-G3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT08-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 VGSOT08-G3-08 reliable?
The price and inventory of VGSOT08-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 VGSOT08-G3-08 is usually 5 days.
3.What payment methods are accepted for VGSOT08-G3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT08-G3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT08-G3-08?
VGSOT08-G3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT08-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 VGSOT08-G3-08?
For technical support, including VGSOT08-G3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT08-G3-08 requirements.
6.How does Aetrix verify that VGSOT08-G3-08 is sourced from the original manufacturer or authorized distributors?
All VGSOT08-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 VGSOT08-G3-08 meets industry standards.
7.What is the process for return or replacement of VGSOT08-G3-08?
All VGSOT08-G3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT08-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 VGSOT08-G3-08 part is unused and in its original packaging.
Return procedure for VGSOT08-G3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VGSOT08-G3-08 Tags
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