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Vishay General Semiconductor - Diodes Division VGSOT03C-HG3-18
- Part No.:
- VGSOT03C-HG3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT03C-HG3-18.pdf
- Description:
- TVS DIODE 3.3VWM 12.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,763
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Product details
Overview
VGSOT03C-HG3-18 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 I²C interfaces against electrostatic discharge.
For engineers reviewing the VGSOT03C-HG3-18 datasheet, VGSOT03C-HG3-18 pinout, VGSOT03C-HG3-18 application, or VGSOT03C-HG3-18 equivalent, this page delivers verified electrical characteristics, BiAs-mode and BiSy-mode operation details, SOT-23 terminal mapping, automotive-grade AEC-Q101 qualification status, and real-world design implications for transient suppression in compact portable electronics.
Technical Context
The VGSOT03C-HG3-18 implements a dual-diode common-anode topology enabling two-line unidirectional protection (BiAs-mode) with asymmetric clamping: forward clamping at ≤4.5 V (IPP = 44 A) and reverse clamping at ≤12.3 V (IPP = 44 A). Its 460–600 pF capacitance at 0 V bias supports signal integrity in sub-480 Mbps interfaces.
In BiSy-mode (pin 3 floating), it functions as a single-line bidirectional protector with 3.8 V VRWM, 7–8.4 V clamping at 1 A, and reduced 230–300 pF capacitance - optimized for balanced line protection where polarity reversal must be suppressed symmetrically.
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 voltage before leakage exceeds 100 μA; sets upper limit for protected signal swing |
| VBR (min/typ/max) | 4.0 / 4.6 / 5.5 V at 1 mA - defines turn-on threshold for transient shunting to ground |
| VC @ IPP = 44 A | ≤12.3 V (8/20 μs) - peak clamped voltage during worst-case surge; determines downstream IC survivability |
| PPP (8/20 μs) | 540 W - maximum transient energy absorption per channel without failure |
| ESD Immunity | ±30 kV contact/air per IEC 61000-4-2 and ISO 10605 - meets highest industrial and automotive ESD stress levels |
| Capacitance (CD) | 460–600 pF @ 0 V, 1 MHz - impacts signal rise time and insertion loss in high-speed data paths |
Pinout & Package
SOT-23 package (JEDEC TO-236AB), 3-terminal surface-mount device weighing 9.2 mg, UL 94 V-0 molding compound, MSL level 1, peak reflow temperature 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Channel 1 | Connects to first protected signal line (L1); conducts ESD current to ground when L1 exceeds VRWM |
| Pin 2 | Anode of Channel 2 | Connects to second protected signal line (L2); independent conduction path for parallel line protection |
| Pin 3 | Common Cathode | Must be connected to system ground; provides shared return path for both channels in BiAs-mode |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-mode operation | Enables dual-line unidirectional protection with asymmetric clamping (low VF for negative transients, controlled VC for positive transients) |
| BiSy-mode capability | Supports single-line bidirectional protection by leaving pin 3 unconnected - eliminates need for separate symmetrical devices |
| AEC-Q101 qualified | Validated for automotive applications including infotainment and body control modules requiring H3B-class ESD robustness (>8 kV HBM) |
| e3 Sn termination | Lead-free, RoHS-compliant matte tin plating ensures solderability and long-term intermetallic stability |
| Parallel diode configuration | Both channels can be paralleled to double IPPM (to 88 A) and halve effective series inductance, lowering clamping voltage |
Applications
| USB 2.0 Data Lines | I²C Bus Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines in portable USB peripherals against user-handling ESD events. IC Role / Device Role / Timing Role: Dual-channel unidirectional clamp placed between connector and USB transceiver, with pin 3 grounded. Use Value: 3.3 V VRWM matches USB 2.0 signal swing; 460–600 pF capacitance preserves signal integrity up to 480 Mbps without jitter degradation. | Use Scenario: Safeguarding SDA/SCL lines in automotive cabin sensors communicating over I²C at 400 kHz. IC Role / Device Role / Timing Role: Common-anode ESD suppressor installed at board edge, grounding transients before reaching MCU I/O pins. Use Value: ±30 kV ESD rating exceeds ISO 10605 requirements; AEC-Q101 qualification ensures reliability in 150 °C under-hood environments. |
| Automotive Infotainment Display Interface | Industrial RS-485 Transceiver Protection |
Use Scenario: Shielding LVDS or FPD-Link II clock/data pairs in center-stack displays from cable-discharge events. IC Role / Device Role / Timing Role: Two VGSOT03C-HG3-18 units deployed per differential pair - one for each line - sharing common ground (pin 3). Use Value: Low 1.2 V forward voltage minimizes negative transient overshoot; 540 W pulse handling prevents latch-up during hot-plug surges. | Use Scenario: Protecting RS-485 transceiver A/B terminals in factory automation gateways exposed to 2 kV surge events. IC Role / Device Role / Timing Role: BiSy-mode configuration (pin 1 to A, pin 2 to B, pin 3 open) providing symmetrical bipolar clamping on differential bus. Use Value: 3.8 V VRWM allows full ±7 V RS-485 common-mode range; 230–300 pF capacitance avoids signal distortion at 10 Mbps data rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | Single-line unidirectional TVS; 3.3 V VRWM, 600 W PPP, but no dual-channel integration | Requires two discrete devices for two-line protection; higher board area and parasitic inductance | Select when cost-per-line is prioritized over layout density and matched clamping behavior |
| TPD2E001DRSR | Two-line unidirectional ESD array; 5 V VRWM, 15 pF typical capacitance, lower power rating (350 W) | Better for high-speed USB 3.0 or HDMI; insufficient for 3.3 V rail-coupled interfaces due to higher VRWM | Select when ultra-low capacitance (<20 pF) is mandatory and VRWM margin permits 5 V operation |
Compared with SMAJ3.3A and TPD2E001DRSR, the VGSOT03C-HG3-18 uniquely delivers integrated dual-channel protection at 3.3 V VRWM with industry-leading 540 W surge capacity and automotive qualification - enabling smaller footprints, matched channel response, and guaranteed performance in harsh environments.
Availability
VGSOT03C-HG3-18 is available at Aetrix Electronics and suitable for USB interface protection, automotive sensor networks, industrial communication buses, and portable consumer electronics requiring stable component supply across production lifecycles.
Supply support for VGSOT03C-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 designs and manufactures discrete semiconductors including diodes, MOSFETs, optoelectronics, and ESD protection devices for industrial, automotive, and computing markets.
The VGSOTxxC family was engineered specifically for compact, high-reliability ESD suppression in space-constrained data interfaces - emphasizing low clamping voltage, dual-channel integration, and AEC-Q101 compliance for automotive electronics.
FAQ
What is the maximum operating junction temperature for VGSOT03C-HG3-18?
The VGSOT03C-HG3-18 has a maximum junction temperature (TJ) of +150 °C, validated per AEC-Q101 stress testing. This rating enables reliable operation in under-hood automotive environments and thermally dense PCB layouts. The device maintains specified clamping performance and leakage current (≤100 μA at VRWM) across its full -55 °C to +150 °C operating range. Derating is not required up to TJ = 150 °C.
Can VGSOT03C-HG3-18 be used for bidirectional protection without modifying the PCB layout?
Yes - VGSOT03C-HG3-18 supports bidirectional protection in BiSy-mode by leaving pin 3 unconnected and using pins 1 and 2 across a single signal line (e.g., RS-485 A/B). In this configuration, it delivers symmetrical clamping with 3.8 V VRWM and 7–8.4 V clamping at 1 A. No PCB changes are needed beyond omitting the ground connection to pin 3; the same footprint serves both BiAs and BiSy modes.
What is the reverse leakage current specification for VGSOT03C-HG3-18 at rated VRWM?
The VGSOT03C-HG3-18 exhibits a maximum reverse leakage current (IR) of 100 μA when biased at its rated VRWM of 3.3 V. This value is measured at Tamb = 25 °C and ensures minimal DC loading on protected 3.3 V logic or analog signal lines. Leakage remains within specification across the full -55 °C to +125 °C ambient range, supporting low-power IoT sensor nodes and battery-operated devices.
How does the capacitance of VGSOT03C-HG3-18 affect high-speed USB 2.0 signal integrity?
The VGSOT03C-HG3-18 has a typical capacitance of 460–600 pF at 0 V bias, which is well-characterized for USB 2.0 (480 Mbps) applications. At 1 MHz, this capacitance introduces <0.1 dB insertion loss below 100 MHz and preserves eye diagram margins when placed adjacent to the connector. Layout best practices - short traces, ground plane beneath, and minimized stub length - ensure the device meets USB-IF signal integrity requirements without equalization.
Is VGSOT03C-HG3-18 qualified to AEC-Q101, and what test conditions does that cover?
Yes, VGSOT03C-HG3-18 is AEC-Q101 qualified, specifically meeting Class H3B for human body model (HBM) ESD with >8 kV withstand capability. Qualification includes temperature cycling, humidity bias HAST, mechanical shock, and high-temperature operating life testing per AEC-Q101 Rev D. This certification validates suitability for automotive powertrain, chassis, and infotainment systems where reliability under thermal and electrical stress is mission-critical.
VGSOT03C-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:
- 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:
- -
- 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
VGSOT03C-HG3-18 FAQ
1.How can I place an order for VGSOT03C-HG3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT03C-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 VGSOT03C-HG3-18 reliable?
The price and inventory of VGSOT03C-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 VGSOT03C-HG3-18 is usually 5 days.
3.What payment methods are accepted for VGSOT03C-HG3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT03C-HG3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT03C-HG3-18?
VGSOT03C-HG3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT03C-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 VGSOT03C-HG3-18?
For technical support, including VGSOT03C-HG3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT03C-HG3-18 requirements.
6.How does Aetrix verify that VGSOT03C-HG3-18 is sourced from the original manufacturer or authorized distributors?
All VGSOT03C-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 VGSOT03C-HG3-18 meets industry standards.
7.What is the process for return or replacement of VGSOT03C-HG3-18?
All VGSOT03C-HG3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT03C-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 VGSOT03C-HG3-18 part is unused and in its original packaging.
Return procedure for VGSOT03C-HG3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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