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Vishay General Semiconductor - Diodes Division VGSOT03C-G3-18
- Part No.:
- VGSOT03C-G3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT03C-G3-18.pdf
- Description:
- TVS DIODE 3.3VWM 12.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,605
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Product details
Overview
VGSOT03C-G3-18 from Vishay Semiconductors is a two-line unidirectional ESD protection diode in SOT-23 package, featuring common-anode dual-channel configuration, 3.3 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 protects high-speed data lines such as USB 2.0 or HDMI interfaces against electrostatic discharge.
For engineers reviewing the VGSOT03C-G3-18 datasheet, VGSOT03C-G3-18 pinout, VGSOT03C-G3-18 application, or VGSOT03C-G3-18 equivalent, key selection criteria include its BiAs-mode asymmetrical clamping behavior, low 1.2 V forward clamping at 1 A, 460–600 pF capacitance at 0 V bias, and AEC-Q101 qualification for automotive signal line protection.
Technical Context
The VGSOT03C-G3-18 operates in BiAs-MODE (Bidirectional Asymmetrical) when pins 1 and 2 connect to protected lines and pin 3 to ground, delivering distinct forward (≤1.2 V) and reverse (≤12.3 V at 44 A) clamping voltages. Its dual-diode common-anode structure enables independent transient suppression on two signal paths with shared ground return.
It supports BiSy-MODE (Bidirectional Symmetrical) operation with pin 3 left unconnected and pins 1–2 used as a single bipolar channel, yielding 7.0–8.4 V clamping at 1 A and 230–300 pF capacitance - optimized for lower-capacitance, symmetrical protection where ground-referenced layout is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | Two-line unidirectional ESD protection diode, common-anode dual-channel |
| VRWM | 3.3 V - maximum continuous reverse working voltage before leakage exceeds 100 µA |
| VBR (min) | 4.0 V at 1 mA - ensures reliable turn-on above system operating voltage |
| VC (max @ 44 A) | 12.3 V (8/20 µs) - peak clamping voltage during worst-case surge, limiting stress on downstream ICs |
| PPP (8/20 µs) | 540 W - surge energy handling capacity compatible with IEC 61000-4-5 Level 4 |
| CD (typ) | 460–600 pF at 0 V - impacts signal integrity on high-speed lines like USB 2.0 (480 Mbps) |
| ESD Immunity | ±30 kV contact/air per IEC 61000-4-2 and ISO 10605 - exceeds industrial and automotive ESD requirements |
Pinout & Package
SOT-23 package (JEDEC TO-236AB), 3-pin surface-mount, green molding compound, MSL level 1, 9.2 mg weight, UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Diode 1 | Connects to first protected signal line (L1); conducts ESD current to ground during positive transients on L1 |
| Pin 2 | Anode of Diode 2 | Connects to second protected signal line (L2); conducts ESD current to ground during positive transients on L2 |
| Pin 3 | Common Cathode / Ground Terminal | Must be connected to system ground; provides shared return path for both protection channels in BiAs mode |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-MODE asymmetrical clamping | Enables low-voltage forward clamping (≤1.2 V) for negative transients and controlled reverse clamping (≤12.3 V) for positive surges - ideal for mixed-polarity data lines |
| Dual-channel common-anode topology | Reduces PCB footprint vs. discrete diodes; eliminates need for separate ground traces for each line, lowering layout complexity and inductance |
| AEC-Q101 qualified | Validated for automotive applications including infotainment and body electronics, supporting H3B-class ESD robustness (>8 kV HBM) |
| e3 Sn terminations | Lead-free, RoHS-compliant matte tin plating ensures solderability and long-term reliability under thermal cycling |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking - simplifies manufacturing and reduces cost of ownership |
Applications
| USB 2.0 Interface Protection | HDMI Data Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− differential pair in USB 2.0 host/device ports against ESD events during hot-plug or handling. IC Role / Device Role / Timing Role: Dual-channel unidirectional clamp referenced to system ground, suppressing ±30 kV discharges while maintaining signal integrity up to 480 Mbps. Use Value: Prevents latch-up or damage to USB transceivers (e.g., TUSB2036, USB3300) with <12.3 V clamping at full 44 A surge current. | Use Scenario: Safeguarding TMDS clock and data channels in HDMI 1.4 receivers/transmitters exposed to user-accessible connectors. IC Role / Device Role / Timing Role: Common-anode ESD suppressor placed directly at HDMI connector, routing transients from both TMDS+ and TMDS− to chassis ground. Use Value: Maintains <600 pF total capacitance per line to avoid signal degradation, while meeting IEC 61000-4-2 Level 4 compliance. |
| Automotive Infotainment Serial Links | Industrial RS-485/RS-422 Transceiver Protection |
Use Scenario: Protecting LVDS or FPD-Link II serial video/data buses between head unit and display in automotive cockpits. IC Role / Device Role / Timing Role: AEC-Q101-qualified dual-line protector deployed on bidirectional high-speed links operating at 1–3 Gbps. Use Value: Guarantees operation from −55 °C to +150 °C junction temperature and withstands repeated ±30 kV ESD strikes without parameter shift. | Use Scenario: Shielding RS-485 transceiver inputs (A/B) in factory automation PLCs and motor drives from cable-induced surges and ESD. IC Role / Device Role / Timing Role: Unidirectional clamp with 3.3 V VRWM placed ahead of transceivers (e.g., SN65HVD72, MAX13487) to limit fault voltage during transients. Use Value: Delivers 540 W surge capability and 100 µA max IR at VRWM, ensuring minimal standby power loss and no false triggering during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF05CT1G | Single-channel, 5.0 V VRWM, SOD-123 package, 200 W PPP (8/20 µs), 350 pF CD | Requires two devices for dual-line protection; higher VRWM limits use in 3.3 V systems | Select when board space allows discrete placement and lower capacitance is prioritized over integration |
| TPD2E001DRYR | Two-channel, 5.5 V VRWM, SOT-553 package, 200 W PPP (8/20 µs), 15 pF CD | Lower capacitance suits USB 3.0/PCIe; not AEC-Q101 qualified; no BiSy mode support | Prefer for high-speed digital interfaces where <20 pF loading is mandatory, but not for automotive environments |
Compared with SMF05CT1G and TPD2E001DRYR, the VGSOT03C-G3-18 offers integrated dual-line protection with automotive-grade reliability, higher surge power, and configurable BiAs/BiSy modes - making it optimal for space-constrained 3.3 V systems requiring robust, validated ESD defense.
Availability
VGSOT03C-G3-18 is available at Aetrix Electronics and suitable for USB interface protection, automotive infotainment serial links, and industrial RS-485 transceiver circuits requiring stable component supply across production lifecycles.
Supply support for VGSOT03C-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 diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The VGSOTxxC family was engineered specifically for compact, high-performance ESD protection of differential and single-ended data lines - balancing low clamping voltage, controlled capacitance, and AEC-Q101 compliance in ultra-small SOT-23 packages.
FAQ
What is the maximum reverse working voltage (VRWM) of the VGSOT03C-G3-18?
The VGSOT03C-G3-18 has a maximum reverse working voltage (VRWM) of 3.3 V, specified at IR ≤ 100 µA. This value defines the highest continuous DC or peak AC voltage the device can block in normal operation without significant leakage, making it suitable for 3.3 V logic and interface applications such as USB 2.0 and LVDS. Exceeding this voltage risks premature conduction and increased power dissipation.
How does the VGSOT03C-G3-18 support both BiAs-MODE and BiSy-MODE configurations?
The VGSOT03C-G3-18 supports BiAs-MODE by connecting pin 3 to ground and pins 1 and 2 to protected lines - enabling asymmetrical clamping (low VF for negative transients, controlled VBR+ΔV for positive). For BiSy-MODE, pin 3 is left unconnected and pins 1–2 form a bipolar channel, delivering symmetrical clamping via series diode conduction. Both modes are defined in the official Vishay datasheet (Doc. #86325, Rev. 1.1) and require no external components.
Is the VGSOT03C-G3-18 qualified for automotive applications?
Yes, the VGSOT03C-G3-18 is AEC-Q101 qualified and rated for H3B-class human body model ESD immunity (>8 kV). It operates across −55 °C to +150 °C junction temperature and meets ISO 10605 and IEC 61000-4-2 ±30 kV requirements - confirming suitability for automotive infotainment, ADAS sensor interfaces, and body control modules per standard automotive qualification protocols.
What is the typical capacitance of the VGSOT03C-G3-18 at 0 V bias?
The typical capacitance of the VGSOT03C-G3-18 at 0 V reverse bias and 1 MHz is 460–600 pF, measured across each channel (pin 1–3 and pin 2–3). This value is critical for high-speed data line design: it must be balanced against signal rise time degradation and insertion loss. At 1.6 V bias, capacitance drops to 320 pF, allowing dynamic optimization in bias-sensitive layouts.
Can the VGSOT03C-G3-18 be used to protect a single signal line in bidirectional mode?
Yes - when configured in BiSy-MODE with pin 3 unconnected and pins 1–2 used as a single bipolar port, the VGSOT03C-G3-18 delivers symmetrical clamping with VRWM = 3.8 V, VBR = 4.5–6.2 V, and VC ≤ 8.4 V at 1 A (8/20 µs). This mode yields 230–300 pF capacitance and is documented in the Vishay datasheet (page 9) for applications requiring matched positive/negative transient suppression without dedicated ground reference.
VGSOT03C-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:
- 2
- 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:
- General Purpose
- Capacitance @ Frequency:
- 460pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT03C-G3-18 FAQ
1.How can I place an order for VGSOT03C-G3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT03C-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 VGSOT03C-G3-18 reliable?
The price and inventory of VGSOT03C-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 VGSOT03C-G3-18 is usually 5 days.
3.What payment methods are accepted for VGSOT03C-G3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT03C-G3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT03C-G3-18?
VGSOT03C-G3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT03C-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 VGSOT03C-G3-18?
For technical support, including VGSOT03C-G3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT03C-G3-18 requirements.
6.How does Aetrix verify that VGSOT03C-G3-18 is sourced from the original manufacturer or authorized distributors?
All VGSOT03C-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 VGSOT03C-G3-18 meets industry standards.
7.What is the process for return or replacement of VGSOT03C-G3-18?
All VGSOT03C-G3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT03C-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 VGSOT03C-G3-18 part is unused and in its original packaging.
Return procedure for VGSOT03C-G3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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