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Vishay General Semiconductor - Diodes Division VGSOT04-G3-18
- Part No.:
- VGSOT04-G3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT04-G3-18.pdf
- Description:
- TVS DIODE 4VWM 14.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,301
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Product details
Overview
VGSOT04-G3-18 from Vishay Semiconductors is a unidirectional single-line ESD protection diode in SOT-23 package, designed for high-reliability data line protection. It delivers ±30 kV IEC 61000-4-2/ISO 10605 ESD immunity, 40 A peak pulse current (8/20 μs), 540 W peak pulse power, and 4 V reverse stand-off voltage - enabling robust transient suppression on USB, HDMI, or industrial sensor interfaces.
For engineers reviewing the VGSOT04-G3-18 datasheet, VGSOT04-G3-18 pinout, VGSOT04-G3-18 application, or VGSOT04-G3-18 equivalent, this page provides verified electrical parameters, BiAs-mode clamping behavior, AEC-Q101 qualification status, SOT-23 footprint compatibility, and real-world use cases in automotive infotainment and industrial I/O protection.
Technical Context
The VGSOT04-G3-18 implements Bidirectional Asymmetrical (BiAs) protection mode: pin 1 grounded, pin 3 connected to signal line. During positive transients, it conducts above VBR = 5–7 V to clamp at ≤13.5 V (IPPM = 40 A); during negative transients, it forward-clamps near ground with VF ≤ 4.2 V at full surge.
Its design targets low-capacitance signal integrity: 360–450 pF at 0 V bias, dropping to 225 pF at 2 V, supporting high-speed interfaces without signal distortion. The device meets AEC-Q101 stress requirements and operates across –55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Immunity | ±30 kV contact/air discharge per IEC 61000-4-2 and ISO 10605 - ensures survivability against human-body and system-level ESD events. |
| Reverse Stand-off Voltage (VRWM) | 4 V - defines maximum continuous operating voltage before leakage exceeds 20 μA; matches 3.3 V logic rails with margin. |
| Peak Pulse Current (8/20 μs) | 40 A - supports high-energy surge suppression per IEC 61000-4-5 without thermal failure. |
| Clamping Voltage (VC) | ≤13.5 V at 40 A - limits voltage seen by downstream ICs during worst-case surge, protecting 5 V-tolerant receivers. |
| Capacitance (0 V, 1 MHz) | 360–450 pF - low enough for USB 2.0 (480 Mbps) and RS-485, but not suitable for >1 Gbps differential links. |
| Junction Temperature Range | –55 °C to +150 °C - enables deployment in under-hood automotive and industrial control environments. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HTOL, TC, and ESD stress testing per AEC standard. |
Pinout & Package
SOT-23 package: 3-pin, surface-mount, green molding compound (UL 94 V-0), 9.2 mg weight, MSL level 1, compatible with standard reflow profiles up to 260 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Ground (Anode) | Low-inductance return path for transient current; must be connected to clean system ground plane. |
| 2 | No Connection (NC) | Internal die pad; electrically isolated - no PCB trace or solder connection required. |
| 3 | Signal Line (Cathode) | Input/output terminal for protected data line; placed in series between connector and IC input. |
Key Features
| Feature | Design Value |
|---|---|
| BiAs Protection Mode | Asymmetric clamping (5–7 V breakdown, ~1 V forward drop) enables precise voltage limiting for both polarities without bidirectional leakage trade-offs. |
| e3 Sn Termination | Lead-free, matte tin plating ensures RoHS compliance and reliable solder wetting on OSP- or ENIG-finished PCBs. |
| Low Leakage Current | ≤20 μA at VR = 4 V minimizes standby power loss and avoids false triggering in high-impedance sensor inputs. |
| High Surge Robustness | 540 W peak pulse power (8/20 μs) sustains repeated surges without parameter shift or catastrophic failure. |
| Automotive Qualification | AEC-Q101 qualified - validated for temperature cycling, humidity bias, and mechanical shock in automotive ECUs and ADAS modules. |
Applications
| USB 2.0 Data Lines | HDMI DDC Channel |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines from ESD events during hot-plug insertion in portable medical devices. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed inline between USB connector and PHY IC. Use Value: Limits clamping voltage to ≤13.5 V at 40 A surge, preserving signal integrity while meeting IEC 61000-4-2 Level 4 compliance. |
Use Scenario: Safeguarding HDMI DDC (I²C) lines in automotive infotainment head units exposed to assembly-line ESD. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp on 3.3 V DDC clock/data lines interfacing with display controller. Use Value: 360–450 pF capacitance avoids timing skew on 100 kHz I²C bus; ±30 kV immunity prevents firmware lockup during manufacturing. |
| Industrial Sensor Inputs | Automotive LIN Bus |
Use Scenario: Shielding analog/digital sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Signal-line protector on 3.3 V or 5 V sensor interface traces routed through noisy cabinet environments. Use Value: 4 V VRWM aligns with 3.3 V supply rails; 150 °C TJ rating ensures operation in sealed enclosures with ambient >85 °C. |
Use Scenario: ESD hardening of LIN transceiver pins in body control modules subjected to service technician handling. IC Role / Device Role / Timing Role: Unidirectional clamp on LIN bus line (single-wire, 12 V nominal) referenced to chassis ground. Use Value: Forward clamping ≤4.2 V at 40 A prevents transceiver latch-up; AEC-Q101 qualification validates long-term field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ4.0A | Higher VRWM (4.0 V), higher VC (12.5 V @ 41.2 A), DO-214AC package - larger footprint, lower thermal resistance. | Used in higher-power industrial power rail protection; unsuitable for high-speed data due to 1000 pF capacitance. | Select SMAJ4.0A only when board space allows DO-214AC and signal bandwidth < 10 MHz. |
| TPD2E001DRSR | Two-channel, bidirectional, 12 pF capacitance, 5 V VRWM - optimized for USB 3.0/MIPI, but lower surge rating (4 A IPPM). | Targeted at ultra-high-speed digital interfaces where low capacitance is critical; lacks AEC-Q101 qualification. | Choose TPD2E001DRSR for mobile or consumer USB-C designs requiring sub-15 pF loading; avoid for automotive or industrial surge-heavy use. |
Compared with SMAJ4.0A and TPD2E001DRSR, VGSOT04-G3-18 uniquely balances 40 A surge capability, 4 V VRWM, AEC-Q101 qualification, and SOT-23 footprint - making it optimal for cost-sensitive, space-constrained automotive and industrial data line protection where moderate speed and high reliability are required.
Availability
VGSOT04-G3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, and USB 2.0 peripheral designs requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant ESD protection.
Supply support for VGSOT04-G3-18 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 passive and protection components for automotive, industrial, and computing markets.
The VGSOTxx family was developed specifically for compact, high-surge-capability ESD protection in space-constrained automotive and industrial electronics - emphasizing AEC-Q101 qualification, BiAs clamping, and SOT-23 manufacturability.
FAQ
What is the exact reverse stand-off voltage (VRWM) of VGSOT04-G3-18?
The VGSOT04-G3-18 has a maximum reverse stand-off voltage (VRWM) of 4 V, verified per Vishay's datasheet revision 1.1 (Feb 2025). At this voltage, reverse leakage remains ≤20 μA, ensuring minimal impact on 3.3 V logic circuits while providing sufficient margin against normal operating fluctuations. This value is fixed for the VGSOT04 variant and does not vary with packaging or date code.
Does VGSOT04-G3-18 support bidirectional ESD protection?
No - VGSOT04-G3-18 is a unidirectional ESD protection diode. Its BiAs-mode operation provides asymmetric clamping: reverse breakdown at 5–7 V and forward conduction near 0 V. It protects against both positive and negative transients, but only when correctly oriented (pin 1 grounded, pin 3 on signal line); it is not symmetrical like a true bidirectional TVS.
Is VGSOT04-G3-18 qualified to AEC-Q101?
Yes, VGSOT04-G3-18 is explicitly AEC-Q101 qualified, as confirmed in the Vishay VGSOT03–VGSOT36 datasheet (Document Number: 86326, Rev. 1.1). This qualification covers temperature cycling, high-temperature operating life, and ESD stress testing - validating its suitability for automotive powertrain, body, and infotainment applications.
What is the clamping voltage of VGSOT04-G3-18 at 40 A surge current?
At 40 A peak pulse current (8/20 μs waveform), the maximum reverse clamping voltage (VC) of VGSOT04-G3-18 is 13.5 V, per absolute maximum ratings table for VGSOT04. This value ensures downstream 5 V-tolerant ICs remain within safe operating limits during worst-case surge events.
Can VGSOT04-G3-18 replace VGSOT03-G3-18 in an existing design?
No - VGSOT04-G3-18 is not a direct replacement for VGSOT03-G3-18. While both share SOT-23 packaging and BiAs architecture, VGSOT03 has VRWM = 3.3 V and VBR = 4–5.5 V, whereas VGSOT04 specifies VRWM = 4 V and VBR = 5–7 V. Substituting them risks overvoltage stress on 3.3 V circuits or insufficient clamping margin on 5 V lines.
VGSOT04-G3-18 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):
- 4V (Max)
- Voltage - Breakdown (Min):
- 5V
- Voltage - Clamping (Max) @ Ipp:
- 13.5V
- Current - Peak Pulse (10/1000µs):
- 40A (8/20µs)
- Power - Peak Pulse:
- 540W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 360pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT04-G3-18 FAQ
1.How can I place an order for VGSOT04-G3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT04-G3-18 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 VGSOT04-G3-18 reliable?
The price and inventory of VGSOT04-G3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VGSOT04-G3-18 is usually 5 days.
3.What payment methods are accepted for VGSOT04-G3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT04-G3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT04-G3-18?
VGSOT04-G3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT04-G3-18 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 VGSOT04-G3-18?
For technical support, including VGSOT04-G3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT04-G3-18 requirements.
6.How does Aetrix verify that VGSOT04-G3-18 is sourced from the original manufacturer or authorized distributors?
All VGSOT04-G3-18 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 VGSOT04-G3-18 meets industry standards.
7.What is the process for return or replacement of VGSOT04-G3-18?
All VGSOT04-G3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT04-G3-18, 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 VGSOT04-G3-18 part is unused and in its original packaging.
Return procedure for VGSOT04-G3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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