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Vishay General Semiconductor - Diodes Division VGSOT03-HG3-18
- Part No.:
- VGSOT03-HG3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT03-HG3-18.pdf
- Description:
- TVS DIODE 3.3VWM 12.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:5,884
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Product details
Overview
VGSOT03-HG3-18 from Vishay Semiconductors is a unidirectional single-line ESD protection diode in SOT-23 package, designed for high-reliability signal-line protection in automotive and industrial interfaces. It delivers ±30 kV IEC 61000-4-2/ISO 10605 ESD immunity, 4 V breakdown voltage (VBR), 3.3 V reverse working voltage (VRWM), and 540 W peak pulse power (8/20 μs), enabling robust transient suppression on low-voltage data lines such as USB 2.0 or CAN FD physical layer inputs.
For engineers reviewing the VGSOT03-HG3-18 datasheet, VGSOT03-HG3-18 pinout, VGSOT03-HG3-18 application, or VGSOT03-HG3-18 equivalent, this device serves as a qualified AEC-Q101 component for automotive infotainment, body control modules, and industrial sensor interfaces where low clamping voltage (<12.3 V at 44 A), sub-600 pF capacitance, and 150 °C junction operation are critical design requirements.
Technical Context
The VGSOT03-HG3-18 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pin 1 is grounded, pin 3 connects to the protected line, and it clamps positive transients above VBR = 4–5.5 V to ground while forward-clamping negative transients near 0 V via low VF ≈ 1.0–1.2 V. Its SOT-23 footprint supports high-density PCB layouts with MSL level 1 moisture sensitivity and peak reflow tolerance up to 260 °C.
This device operates across –55 °C to +150 °C, meets AEC-Q101 qualification for automotive use, and features e3 Sn plating with UL 94 V-0 molding compound. Its 44 A peak pulse current (8/20 μs) and 44 W (10/1000 μs) rating enable sustained surge handling in harsh environments without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 3.3 V - Maximum continuous reverse voltage before leakage exceeds 100 µA; ensures compatibility with 3.3 V logic and USB 2.0 signaling. |
| VBR (min/typ/max) | 4 / 4.6 / 5.5 V - Reverse breakdown threshold at 1 mA; defines minimum trigger point for ESD clamping. |
| VC @ 44 A (8/20 µs) | ≤12.3 V - Clamping voltage under worst-case surge; limits stress on downstream ICs like microcontrollers or transceivers. |
| CD @ 0 V, 1 MHz | 460–600 pF - Junction capacitance at zero bias; impacts signal integrity on high-speed lines (e.g., <12 Mbps CAN). |
| ESD immunity | ±30 kV contact/air discharge per IEC 61000-4-2 and ISO 10605 - Full compliance with automotive and industrial ESD test standards. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in engine bay or industrial enclosures without derating. |
| Package | SOT-23 - Industry-standard 3-pin surface-mount package with 2.425 mm × 1.3 mm footprint and 0.95 mm height for automated assembly. |
Pinout & Package
SOT-23 package: 3-pin, gull-wing leads, e3 Sn-plated, green molding compound (UL 94 V-0), 9.2 mg weight, MSL level 1, 260 °C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground (cathode connection) | Low-inductance return path for ESD current; must be connected to solid system ground plane for effective clamping. |
| Pin 2 | No internal connection | Unused terminal; electrically isolated and not bonded-no PCB trace or thermal pad required. |
| Pin 3 | Anode (signal line input) | Connects to protected data line (e.g., CAN_H, USB_D+, or sensor output); conducts ESD current to Pin 1 during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional ESD protection | Enables asymmetric clamping: low forward VF (~1.0 V) for negative transients, controlled reverse VC for positive surges-ideal for DC-biased signal lines. |
| AEC-Q101 qualification | Validated for automotive applications including temperature cycling, humidity testing, and mechanical shock-supports Tier-1 supply chain requirements. |
| e3 Sn termination | Lead (Pb)-free, RoHS-compliant tin plating compatible with standard soldering processes and long-term reliability in humid environments. |
| BiAs-MODE architecture | Eliminates need for external series resistors by integrating optimized clamping behavior for both polarities-reduces BOM count and board space. |
| High surge robustness | 540 W (8/20 µs) and 44 W (10/1000 µs) peak pulse power ratings ensure survivability against lightning-induced surges and load-dump transients. |
Applications
| Automotive Infotainment Interface | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Protecting USB 2.0 D+ and D− lines in head unit docking connectors exposed to frequent hot-plug and static discharge. IC Role / Device Role / Timing Role: Standalone ESD clamp placed immediately at connector entry point, shunting transients before reaching USB transceiver IC. Use Value: Prevents latch-up or permanent damage to USB PHY with <12.3 V clamping at 44 A, preserving data integrity across 480 Mbps operation. |
Use Scenario: Shielding analog outputs of pressure or temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance (≤600 pF) transient suppressor on 0–10 V or 4–20 mA signal paths subject to cable coupling noise. Use Value: Maintains signal fidelity with minimal loading while surviving ±30 kV ESD events common in maintenance technician handling. |
| Body Control Module (BCM) LIN Bus | Automotive Camera Serial Link (FPD-Link) |
|
Use Scenario: ESD protection on LIN bus transceiver pins in door module ECUs subjected to repeated human touch and environmental stress. IC Role / Device Role / Timing Role: Unidirectional clamp between LIN transceiver TX/RX and vehicle harness, referenced to chassis ground. Use Value: Ensures uninterrupted communication at 19.2 kbps with <5.5 V VBR aligning to LIN's 12 V supply domain and low leakage (<100 µA). |
Use Scenario: Front-end protection for FPD-Link III serializer/deserializer pairs in rear-view camera systems routed through long cables. IC Role / Device Role / Timing Role: Single-line clamp on clock or data lanes to suppress ESD-induced jitter or bit errors during vehicle service. Use Value: Delivers <600 pF capacitance and <12.3 V clamping to avoid signal degradation at >3 Gbps while meeting AEC-Q101 vibration and thermal specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD9B3.3ST5G | Lower VRWM = 3.3 V, same SOT-23, but lower PPPM = 200 W (8/20 µs) and no AEC-Q101 qualification. | Targeted at consumer electronics; lacks automotive-grade reliability testing and high-surge capability. | Select only for cost-sensitive non-automotive designs where 200 W surge margin suffices. |
| TPD2E001DRYR | Bidirectional configuration, higher CD = 12 pF typical, VRWM = 5 V, AEC-Q101 qualified, but lower IPPM = 3 A (8/20 µs). | Optimized for high-speed digital lines (e.g., HDMI, USB 3.0) where ultra-low capacitance is mandatory. | Choose when protecting >100 Mbps signals where <15 pF capacitance outweighs surge robustness needs. |
Compared with VGSOT03-HG3-18, ESD9B3.3ST5G offers lower cost but reduced surge endurance and no automotive qualification, while TPD2E001DRYR provides bidirectional symmetry and ultra-low capacitance at the expense of peak current handling-making VGSOT03-HG3-18 optimal for high-energy, automotive-grade unidirectional protection.
Availability
VGSOT03-HG3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, and body control modules requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for VGSOT03-HG3-18 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 VGSOT family targets high-surge, AEC-Q101-compliant ESD protection for automotive signal lines, emphasizing robust clamping, thermal stability, and standardized SOT-23 integration into safety-critical ECUs.
FAQ
What is the maximum operating temperature for VGSOT03-HG3-18?
The VGSOT03-HG3-18 has a maximum junction temperature (TJ) of +150 °C and operates from –55 °C to +150 °C. This wide range supports deployment in under-hood automotive environments and industrial enclosures where ambient temperatures exceed 105 °C. The device maintains specified electrical performance across this full range, and its SOT-23 package enables efficient heat dissipation when mounted on thermally enhanced PCBs. VGSOT03-HG3-18 must be derated per thermal impedance curves if sustained power dissipation exceeds 44 W (10/1000 µs) in continuous operation.
Does VGSOT03-HG3-18 meet AEC-Q101 qualification?
Yes, VGSOT03-HG3-18 is explicitly AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number: 86326, Rev. 1.1). It passes all required stress tests including temperature cycling, humidity bias HAST, mechanical shock, and ESD human body model (H3B > 8 kV). This qualification validates its suitability for automotive electronic control units, including those in powertrain, chassis, and body domains. VGSOT03-HG3-18 carries the "HG" suffix denoting AEC-Q101 compliance and green environmental status.
What is the clamping voltage of VGSOT03-HG3-18 at 44 A surge current?
At 44 A peak pulse current (8/20 µs waveform), the maximum reverse clamping voltage (VC) of VGSOT03-HG3-18 is 12.3 V. This value is measured per IEC 61000-4-5 and guarantees that downstream components-such as 3.3 V or 5 V microcontrollers or transceivers-experience no more than 12.3 V during worst-case ESD or surge events. The low clamping level is achieved through optimized silicon geometry and low dynamic impedance, and VGSOT03-HG3-18 maintains this performance across its full operating temperature range.
How does the BiAs-MODE architecture work in VGSOT03-HG3-18?
VGSOT03-HG3-18 uses BiAs-MODE (Bidirectional Asymmetrical) protection: Pin 1 is grounded, Pin 3 connects to the signal line, and the device clamps positive transients above VBR ≈ 4.6 V to ground while conducting negative transients in forward bias with VF ≈ 1.0–1.2 V. This asymmetry allows precise matching to DC-biased interfaces (e.g., LIN or CAN) without external biasing components. VGSOT03-HG3-18 achieves this via internal diode structure-not external circuitry-ensuring predictable, repeatable clamping behavior across production lots.
What is the capacitance of VGSOT03-HG3-18 at 0 V bias?
The junction capacitance (CD) of VGSOT03-HG3-18 is 460–600 pF at 0 V reverse bias and 1 MHz frequency. This value is measured per standard JEDEC test conditions and directly impacts high-frequency signal integrity-especially on lines operating above 10 Mbps. At higher reverse bias (e.g., 1.6 V), capacitance drops to ≤320 pF, enabling improved bandwidth in biased configurations. Designers must account for this capacitance when routing sensitive analog or high-speed digital traces, as VGSOT03-HG3-18's 600 pF upper limit may affect rise time in >50 Mbps applications.
VGSOT03-HG3-18 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):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 4V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 44A (8/20µs)
- Power - Peak Pulse:
- 540W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 460pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT03-HG3-18 FAQ
1.How can I place an order for VGSOT03-HG3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT03-HG3-18 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 VGSOT03-HG3-18 reliable?
The price and inventory of VGSOT03-HG3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VGSOT03-HG3-18 is usually 5 days.
3.What payment methods are accepted for VGSOT03-HG3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT03-HG3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT03-HG3-18?
VGSOT03-HG3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT03-HG3-18 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 VGSOT03-HG3-18?
For technical support, including VGSOT03-HG3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT03-HG3-18 requirements.
6.How does Aetrix verify that VGSOT03-HG3-18 is sourced from the original manufacturer or authorized distributors?
All VGSOT03-HG3-18 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 VGSOT03-HG3-18 meets industry standards.
7.What is the process for return or replacement of VGSOT03-HG3-18?
All VGSOT03-HG3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT03-HG3-18, 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 VGSOT03-HG3-18 part is unused and in its original packaging.
Return procedure for VGSOT03-HG3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VGSOT03-HG3-18 Tags
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