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Vishay General Semiconductor - Diodes Division VGSOT04-HG3-08
- Part No.:
- VGSOT04-HG3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT04-HG3-08.pdf
- Description:
- TVS DIODE 4VWM 14.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,769
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Product details
Overview
VGSOT04-HG3-08 from Vishay Semiconductors is a unidirectional single-line ESD protection diode in SOT-23 package, rated for 4 V reverse stand-off voltage (VRWM), ±30 kV IEC 61000-4-2/ISO 10605 ESD immunity, and 540 W peak pulse power (8/20 μs). It delivers 40 A peak pulse current and clamps transients to ≤13.5 V at 40 A, serving as primary transient suppression on low-voltage data lines such as USB 2.0 or I²C interfaces.
For engineers reviewing the VGSOT04-HG3-08 datasheet, VGSOT04-HG3-08 pinout, VGSOT04-HG3-08 application, or VGSOT04-HG3-08 equivalent, this device is selected for high-reliability ESD hardening of 3.3 V–5 V signal paths where low capacitance (≤450 pF at 0 V), AEC-Q101 qualification, and tight clamping performance are critical.
Technical Context
The VGSOT04-HG3-08 implements BiAs-MODE (Bidirectional Asymmetrical) protection: reverse conduction initiates above 5 V breakdown (VBR = 5–7 V), while forward clamping holds negative transients near ground (VF ≤ 1.2 V at 1 A). Its SOT-23 three-terminal configuration connects Pin 1 to ground, Pin 3 to the protected line, and Pin 2 as internal connection-enabling open-circuit isolation below VRWM and rapid turn-on during overvoltage events.
This device meets AEC-Q101 stress requirements including H3B-class human body model (>8 kV), operates from –55 °C to +150 °C junction temperature, and features e3 Sn plating with MSL Level 1 moisture sensitivity-supporting lead-free reflow up to 260 °C peak without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 4 V - Maximum continuous working voltage before leakage exceeds 20 µA; sets upper limit for safe operation on 3.3 V logic rails. |
| VBR (min) | 5 V - Guaranteed reverse breakdown threshold at 1 mA; ensures reliable triggering above system operating voltage. |
| VC @ 40 A | ≤13.5 V - Peak clamping voltage under full-rated 8/20 µs surge; limits stress on downstream ICs like microcontrollers or PHYs. |
| CD @ 0 V | 360–450 pF - Junction capacitance at zero bias; compatible with USB 2.0 (≤500 pF) and I²C (≤400 pF) signal integrity budgets. |
| PPPM (8/20 µs) | 540 W - Peak pulse power handling capacity; sustains multiple ±30 kV ESD strikes per IEC 61000-4-2. |
| TJ max. | +150 °C - Maximum junction temperature; supports under-hood automotive and industrial ambient environments. |
Pinout & Package
SOT-23 package: 3-pin, surface-mount, green molding compound (UL 94 V-0), 9.2 mg weight, MSL Level 1, 260 °C max reflow peak temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground (Anode common) | Primary return path for ESD current; must be connected to low-impedance system ground plane. |
| Pin 2 | Internal connection (no external bond) | Not externally accessible; electrically tied internally to Pin 1 per SOT-23 footprint layout. |
| Pin 3 | Protected line (Cathode) | Input/output node for data/signal line; clamps positive transients to ground via reverse avalanche and negative transients via forward conduction. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 / ISO 10605 compliance | ±30 kV contact and air discharge - Meets highest industrial and automotive ESD immunity standards without external circuitry. |
| AEC-Q101 qualification | H3B-class HBM (>8 kV) - Validated for automotive infotainment, ADAS sensor interfaces, and engine control modules. |
| BiAs-MODE asymmetry | Reverse clamping ~10.3 V @ 40 A; forward clamping ~4.2 V @ 40 A - Enables tighter protection windows than symmetrical TVS devices. |
| e3 Sn termination | Lead (Pb)-free, RoHS-compliant tin plating - Ensures solderability and long-term reliability in lead-free assembly processes. |
Applications
| USB 2.0 Data Lines | I²C Bus Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines in embedded USB peripherals against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Standalone unidirectional ESD clamp placed directly at connector entry point. Use Value: 450 pF capacitance preserves signal rise/fall times; 13.5 V clamping prevents damage to USB transceivers operating at 3.3 V. |
Use Scenario: Safeguarding SDA/SCL lines in automotive body control modules exposed to harness-induced transients. IC Role / Device Role / Timing Role: Point-of-use transient suppressor on bidirectional open-drain bus with 400 kHz clock rate. Use Value: Low 20 µA leakage at 4 V VRWM avoids bus pull-up current errors; AEC-Q101 qualification ensures field reliability. |
| Automotive Sensor Interfaces | Industrial CAN FD Transceiver I/O |
Use Scenario: Shielding analog/digital outputs of pressure or temperature sensors mounted in engine compartments. IC Role / Device Role / Timing Role: Primary ESD barrier between sensor ASIC and wiring harness connector. Use Value: 150 °C TJ max enables placement near heat sources; ±30 kV rating exceeds ISO 10605 requirements for 12 V systems. |
Use Scenario: Adding secondary ESD protection on CAN FD transceiver RX/TX pins beyond built-in protection. IC Role / Device Role / Timing Role: External clamping diode supplementing internal TVS in high-speed CAN physical layer. Use Value: 360 pF capacitance avoids signal distortion at 5 Mbps; 540 W PPPM handles coupled surges from adjacent power lines. |
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), but bidirectional; 400 W PPPM (8/20 µs); 600 pF capacitance. | Less suitable for data lines due to higher capacitance and symmetric clamping behavior. | Select only when bidirectional protection is required and signal bandwidth allows >600 pF loading. |
| TPD2E001DRYR | Lower VRWM (3.3 V); dual-channel; 12 pF capacitance; 200 W PPPM; not AEC-Q101 qualified. | Better for high-speed digital interfaces (e.g., HDMI, PCIe), but lacks automotive qualification and single-line robustness. | Prefer for consumer electronics with strict capacitance limits; avoid in automotive or industrial deployments requiring AEC-Q101. |
Compared with SMAJ4.0A and TPD2E001DRYR, VGSOT04-HG3-08 uniquely balances AEC-Q101 qualification, 450 pF capacitance, and 540 W surge capability in a cost-effective SOT-23 package-making it optimal for automotive and industrial 3.3 V–5 V data line protection where reliability and standardized testing matter.
Availability
VGSOT04-HG3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor networks, and USB peripheral designs requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for VGSOT04-HG3-08 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 passive and protection components for automotive, industrial, and computing markets.
The VGSOT family was designed specifically for robust, low-capacitance ESD protection of high-speed data lines in harsh environments-emphasizing AEC-Q101 qualification, precise clamping, and SOT-23 manufacturability.
FAQ
What is the maximum reverse working voltage (VRWM) of the VGSOT04-HG3-08?
The VGSOT04-HG3-08 has a maximum reverse working voltage (VRWM) of 4 V, meaning it maintains low leakage (<20 µA) up to this DC or steady-state AC voltage. This makes it suitable for protecting 3.3 V logic interfaces while ensuring minimal impact on normal signal operation. The device begins clamping above its 5–7 V breakdown range, providing margin between VRWM and VBR.
Does the VGSOT04-HG3-08 meet automotive qualification standards?
Yes, the VGSOT04-HG3-08 is AEC-Q101 qualified and rated for H3B-class human body model (HBM) with >8 kV tolerance. It also passes temperature cycling, humidity testing, and mechanical shock per AEC-Q101, confirming suitability for under-hood and cabin-mounted automotive electronics such as sensor interfaces and infotainment data links.
How does the BiAs-MODE architecture affect clamping behavior in the VGSOT04-HG3-08?
The BiAs-MODE (Bidirectional Asymmetrical) design in the VGSOT04-HG3-08 provides distinct clamping levels: ~10.3 V for positive transients (reverse avalanche) and ~4.2 V for negative transients (forward conduction). This asymmetry allows tighter protection windows than symmetrical TVS diodes-especially valuable for grounding-sensitive circuits where negative excursions must be held near 0 V.
What is the typical junction capacitance of the VGSOT04-HG3-08 at 0 V bias?
The VGSOT04-HG3-08 exhibits a typical junction capacitance (CD) of 360–450 pF at 0 V reverse bias and 1 MHz frequency. At 2 V bias, capacitance drops to ~225 pF. This value is optimized for USB 2.0 and I²C applications where signal integrity must be preserved without excessive RC delay or reflection.
Can the VGSOT04-HG3-08 replace the VGSOT03-HG3-08 in a design?
No-the VGSOT04-HG3-08 (VRWM = 4 V, VBR = 5–7 V) is not a direct replacement for VGSOT03-HG3-08 (VRWM = 3.3 V, VBR = 4–5.5 V). Substituting would raise the clamping threshold and risk insufficient protection on 3.3 V rails. Designers must verify VRWM alignment with system operating voltage and confirm that higher VBR does not compromise transient response timing or downstream IC tolerance.
VGSOT04-HG3-08 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):
- 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:
- -
- Capacitance @ Frequency:
- 360pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT04-HG3-08 FAQ
1.How can I place an order for VGSOT04-HG3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT04-HG3-08 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 VGSOT04-HG3-08 reliable?
The price and inventory of VGSOT04-HG3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VGSOT04-HG3-08 is usually 5 days.
3.What payment methods are accepted for VGSOT04-HG3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT04-HG3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT04-HG3-08?
VGSOT04-HG3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT04-HG3-08 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 VGSOT04-HG3-08?
For technical support, including VGSOT04-HG3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT04-HG3-08 requirements.
6.How does Aetrix verify that VGSOT04-HG3-08 is sourced from the original manufacturer or authorized distributors?
All VGSOT04-HG3-08 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 VGSOT04-HG3-08 meets industry standards.
7.What is the process for return or replacement of VGSOT04-HG3-08?
All VGSOT04-HG3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT04-HG3-08, 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 VGSOT04-HG3-08 part is unused and in its original packaging.
Return procedure for VGSOT04-HG3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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