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Vishay General Semiconductor - Diodes Division VGSOT12-G3-08
- Part No.:
- VGSOT12-G3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT12-G3-08.pdf
- Description:
- TVS DIODE 12VWM 26VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,902
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Product details
Overview
VGSOT12-G3-08 from Vishay Semiconductors is a unidirectional single-line ESD protection diode in SOT-23 package, rated for 12 V reverse stand-off voltage (VRWM), ±30 kV IEC 61000-4-2/ISO 10605 ESD immunity, and 480 W peak pulse power (8/20 μs). It delivers 18.5 A peak pulse current and clamps transients to ≤26 V at full stress, serving as primary transient suppression on low-voltage data lines such as USB 2.0 or I²C interfaces.
For engineers reviewing the VGSOT12-G3-08 datasheet, VGSOT12-G3-08 pinout, VGSOT12-G3-08 application, or VGSOT12-G3-08 equivalent, this device is selected for high-reliability ESD hardening of 12 V-rated signal paths where low capacitance (115–150 pF at 0 V), AEC-Q101 qualification, and bidirectional asymmetrical (BiAs) clamping behavior are required.
Technical Context
The VGSOT12-G3-08 implements a BiAs-MODE architecture: pin 1 is grounded, pin 3 connects to the protected line, and the device provides high-impedance isolation below VRWM = 12 V. Positive transients exceeding VBR = 13.5–16.5 V trigger reverse conduction, clamping with VC ≤ 26 V at IPPM = 18.5 A (8/20 μs).
Negative transients forward-bias the diode, clamping near ground via low VF ≤ 2.5 V at full current. Its 115–150 pF capacitance at 0 V and 54 pF at 6 V enables use on moderate-speed digital lines without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12 V - Maximum continuous operating voltage before clamping begins; sets upper limit for safe signal swing on protected line. |
| VBR (min/typ/max) | 13.5 / 15 / 16.5 V - Reverse breakdown threshold; defines onset of protective conduction under overvoltage stress. |
| VC @ IPPM | ≤26 V @ 18.5 A (8/20 μs) - Peak clamping voltage during worst-case surge; determines maximum voltage seen by downstream IC. |
| Capacitance | 115–150 pF @ 0 V, 54 pF @ 6 V - Low enough for USB 2.0 (480 Mbps) and I²C (up to 1 MHz) without excessive rise-time degradation. |
| ESD Immunity | ±30 kV contact/air (IEC 61000-4-2 & ISO 10605) - Meets automotive and industrial ESD robustness requirements per AEC-Q101. |
| Package | SOT-23 - Standard 3-pin surface-mount footprint; compatible with automated assembly and reflow profiles up to 260 °C peak. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and thermally constrained industrial enclosures. |
Pinout & Package
SOT-23 package: 3-pin, gull-wing lead configuration; 2.9 mm × 1.3 mm body, 0.95 mm height; MSL level 1, RoHS-compliant e3 (Sn) terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground (Anode common) | Low-inductance connection to system ground plane; must be routed with minimal trace length to ensure effective clamping. |
| Pin 2 | No internal connection | Electrically isolated; no PCB routing or thermal pad required; maintains mechanical stability only. |
| Pin 3 | Protected Line (Cathode) | Connects directly to the signal/data line requiring ESD protection; placed adjacent to connector or IC input pin. |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-MODE clamping | Asymmetric forward/reverse clamping (VF ≤ 2.5 V / VC ≤ 26 V) minimizes voltage overshoot on both polarities while preserving signal integrity. |
| AEC-Q101 qualified | Validated for automotive applications including infotainment, body control, and ADAS sensor interfaces with extended temperature and reliability testing. |
| Low leakage current | IR ≤ 1 μA at VR = 12 V ensures negligible DC loading on high-impedance sensor or reference lines. |
| High ESD immunity | ±30 kV contact/air discharge rating exceeds IEC 61000-4-2 Level 4, eliminating need for secondary board-level protection in many designs. |
| e3 Sn termination | Lead-free, matte tin plating ensures solderability compatibility with Pb-free reflow processes and long-term intermetallic stability. |
Applications
| USB 2.0 Data Lines | I²C Bus Interface |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 peripherals against ESD events during hot-plug insertion or handling. IC Role / Device Role / Timing Role: Primary ESD suppressor placed between USB connector and PHY transceiver, operating in parallel with signal path. Use Value: 115–150 pF capacitance avoids signal distortion at 480 Mbps; clamping ≤26 V prevents damage to 3.3 V tolerant PHY inputs. | Use Scenario: Hardening SDA/SCL lines of automotive-grade I²C sensors (e.g., temperature, pressure) exposed to chassis-ground transients. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor on each I²C line, grounded at Pin 1 with direct trace to local ground. Use Value: 1 μA leakage preserves bus pull-up integrity; ±30 kV ESD rating meets ISO 10605 requirements for vehicle interior electronics. |
| Automotive Infotainment Display Link | Industrial CAN Transceiver Interface |
Use Scenario: Shielding LVDS or FPD-Link II clock/data pairs in center-stack displays from ESD coupling through touch-sensitive bezels. IC Role / Device Role / Timing Role: Single-line protector per differential pair lane, leveraging low capacitance to maintain signal edge fidelity. Use Value: 54 pF capacitance at 6 V bias reduces jitter accumulation across multi-meter cable runs; AEC-Q101 qualification supports 15-year vehicle lifecycle. | Use Scenario: Adding secondary ESD protection on CAN_H/CAN_L lines upstream of isolated CAN transceivers in factory automation nodes. IC Role / Device Role / Timing Role: Standalone unidirectional clamp on each CAN line, referenced to system ground rather than CAN common mode. Use Value: 12 V VRWM aligns with typical CAN bus common-mode range; 480 W pulse power withstands repetitive load-dump induced surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Higher VRWM (12.2 V), higher VC (≤30 V @ 17.5 A), larger SMA package (4.5 × 2.7 mm) | Less suitable for space-constrained PCBs; higher thermal mass slows response slightly | Select when higher surge margin is needed and SOT-23 footprint is not mandatory |
| TPD2E001DRSR | Lower VRWM (5.5 V), dual-channel, 12 pF capacitance, integrated ESD + EMI filtering | Designed for high-speed USB 3.0/DisplayPort; incompatible with 12 V signal rails | Select only for sub-6 V data lines requiring ultra-low capacitance and multi-line integration |
Compared with SMAJ12A and TPD2E001DRSR, VGSOT12-G3-08 uniquely balances 12 V operating margin, SOT-23 compactness, ±30 kV ESD rating, and BiAs clamping-making it optimal for automotive and industrial 12 V data interfaces where board space and reliability are co-prioritized.
Availability
VGSOT12-G3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial I²C sensor networks, and USB 2.0 peripheral designs requiring stable component supply and AEC-Q101 compliance.
Supply support for VGSOT12-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, passive elements, and sensors, with leadership in reliability-critical power and protection devices.
VGSOT12-G3-08 belongs to Vishay's VGSOTxx family of unidirectional ESD suppressors, engineered specifically for high-immunity, low-capacitance transient protection in automotive and industrial signal-line applications.
FAQ
What is the maximum reverse working voltage (VRWM) of the VGSOT12-G3-08?
The VGSOT12-G3-08 has a maximum reverse working voltage (VRWM) of 12 V, meaning it remains non-conductive and provides high-impedance isolation for signal lines operating continuously up to this voltage. This value is confirmed in the Electrical Characteristics table for VGSOT12 on page 6 of Vishay document 86326, where VRWM is specified as "12 V" with IR ≤ 1 μA at VR = 12 V.
Does the VGSOT12-G3-08 meet AEC-Q101 qualification standards?
Yes, the VGSOT12-G3-08 is AEC-Q101 qualified, as explicitly stated in the FEATURES section (page 1) and PACKAGE DATA table (page 2) of Vishay document 86326. This qualification covers temperature cycling, humidity testing, mechanical shock, and ESD robustness, validating its suitability for automotive under-hood and cabin electronics.
What is the clamping voltage of the VGSOT12-G3-08 under full-rated surge current?
Under an 8/20 μs surge current of 18.5 A (IPPM), the VGSOT12-G3-08 clamps to a maximum of 26 V, as specified in the Absolute Maximum Ratings table for VGSOT12 on page 3 of Vishay document 86326. This VC value defines the peak voltage imposed on the protected circuit during worst-case transient events.
How does the BiAs-MODE architecture affect ESD protection performance in the VGSOT12-G3-08?
The BiAs-MODE architecture in the VGSOT12-G3-08 enables asymmetric clamping: positive transients are suppressed via reverse breakdown (VC ≤ 26 V), while negative transients are clamped near ground using low forward voltage (VF ≤ 2.5 V at 18.5 A). This dual-path behavior-documented in the BiAs-MODE description on page 5-ensures balanced protection without signal inversion or DC offset.
What is the capacitance of the VGSOT12-G3-08 at zero bias, and why does it matter for high-speed interfaces?
The VGSOT12-G3-08 exhibits 115–150 pF capacitance at 0 V reverse bias (f = 1 MHz), per the Electrical Characteristics table on page 6. This value is critical for high-speed interfaces like USB 2.0: too much capacitance degrades edge rate and causes bit errors, while this range strikes a balance between ESD robustness and signal integrity for data rates up to 480 Mbps.
VGSOT12-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):
- 12V (Max)
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 18.5A (8/20µs)
- Power - Peak Pulse:
- 480W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 115pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT12-G3-08 FAQ
1.How can I place an order for VGSOT12-G3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT12-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 VGSOT12-G3-08 reliable?
The price and inventory of VGSOT12-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 VGSOT12-G3-08 is usually 5 days.
3.What payment methods are accepted for VGSOT12-G3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT12-G3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT12-G3-08?
VGSOT12-G3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT12-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 VGSOT12-G3-08?
For technical support, including VGSOT12-G3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT12-G3-08 requirements.
6.How does Aetrix verify that VGSOT12-G3-08 is sourced from the original manufacturer or authorized distributors?
All VGSOT12-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 VGSOT12-G3-08 meets industry standards.
7.What is the process for return or replacement of VGSOT12-G3-08?
All VGSOT12-G3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT12-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 VGSOT12-G3-08 part is unused and in its original packaging.
Return procedure for VGSOT12-G3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VGSOT12-G3-08 Tags
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