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Vishay General Semiconductor - Diodes Division VGSOT12C-HG3-18
- Part No.:
- VGSOT12C-HG3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT12C-HG3-18.pdf
- Description:
- TVS DIODE 12VWM 26VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,736
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Product details
Overview
VGSOT12C-HG3-18 from Vishay Semiconductors is a two-line unidirectional ESD protection diode in SOT-23 package, featuring common-anode dual-channel configuration, 12 V reverse stand-off voltage (VRWM), ±30 kV IEC 61000-4-2/ISO 10605 ESD immunity, and 480 W peak pulse power (8/20 μs). It protects high-speed data lines such as USB 2.0 and HDMI interfaces against electrostatic discharge.
For engineers reviewing the VGSOT12C-HG3-18 datasheet, VGSOT12C-HG3-18 pinout, VGSOT12C-HG3-18 application, or VGSOT12C-HG3-18 equivalent, this page delivers verified electrical parameters, BiAs/BiSy dual-mode operation details, clamping behavior under transient stress, and AEC-Q101-qualified alternatives for automotive and industrial interface protection.
Technical Context
The VGSOT12C-HG3-18 implements a dual-diode common-anode topology enabling BiAs-MODE (bidirectional asymmetrical) protection: positive transients clamp via reverse breakdown (VBR = 13.5–16.5 V), while negative transients clamp near ground via low forward voltage (VF ≤ 2.5 V at 18.5 A). Pin 3 is ground, pins 1 and 2 connect to protected signal lines.
In BiSy-MODE (single-line bidirectional symmetrical), pins 1 and 2 form a series-connected pair with pin 3 left floating, delivering matched ±12.5 V VRWM and 16.4–28.1 V clamping across polarity-enabling robust protection for RS-485 or CAN FD bus lines where symmetric surge response is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | Two-line unidirectional ESD protection diode, common-anode dual-channel |
| VRWM | 12 V maximum reverse working voltage - sets safe operating threshold for 12 V nominal data lines |
| VBR (min/typ/max) | 13.5 / 15.0 / 16.5 V at 1 mA - defines precise reverse conduction onset for controlled clamping |
| Clamping Voltage VC | 20.2–26.0 V at IPPM = 18.5 A (8/20 μs) - limits transient overvoltage seen by downstream ICs |
| Capacitance CD | 115–150 pF at 0 V, 54 pF at 6 V - low enough for USB 2.0 (≤480 Mbps) without signal integrity degradation |
| ESD Immunity | ±30 kV contact/air per IEC 61000-4-2 and ISO 10605 - exceeds Level 4 system-level ESD requirements |
| AEC-Q101 Qualified | Yes - validated for automotive electronics including infotainment and body control modules |
Pinout & Package
SOT-23 package (JEDEC TO-236AB), 3-pin surface-mount, 9.2 mg weight, MSL level 1, peak reflow temperature 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Diode 1 | Connects to first protected signal line (L1); forms one half of dual-channel ESD path to ground |
| Pin 2 | Anode of Diode 2 | Connects to second protected signal line (L2); enables simultaneous protection of differential or parallel data lines |
| Pin 3 | Common Cathode / Ground Terminal | Must be connected to system ground; provides shared return path for both ESD current paths |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-MODE operation | Asymmetrical clamping (low VF for negative, controlled VBR for positive) minimizes ground bounce and preserves signal integrity on bidirectional buses |
| BiSy-MODE capability | Reconfigurable as single-line symmetrical protector (pins 1–2, pin 3 open) for RS-485/CAN FD with matched ±12.5 V standoff and <28.1 V clamping |
| Low leakage current | IR ≤ 1 μA at VR = 12 V - prevents DC loading on sensitive analog or low-power sensor interfaces |
| High surge robustness | IPPM = 18.5 A (8/20 μs), PPP = 480 W - withstands multiple IEC 61000-4-5 surges without degradation |
| AEC-Q101 qualification | Qualified for automotive under HBM >8 kV and full temperature range (−55 °C to +150 °C junction) |
Applications
| USB 2.0 Interface Protection | HDMI DDC Channel Protection |
|---|---|
Use Scenario: Protecting USB 2.0 data lines (D+, D−) against ESD events during hot-plug insertion in portable docking stations. IC Role / Device Role / Timing Role: Dual-channel unidirectional clamp placed between connector and USB transceiver, with pin 3 grounded. Use Value: 115–150 pF capacitance avoids signal rise-time degradation at 480 Mbps; ±30 kV ESD rating ensures IEC 61000-4-2 compliance. |
Use Scenario: Safeguarding HDMI Display Data Channel (DDC) lines (SCL/SDA) from user-handling ESD in home theater AV receivers. IC Role / Device Role / Timing Role: Common-anode dual diode shunting transients from 5 V-tolerant I²C-compatible DDC lines to chassis ground. Use Value: 12 V VRWM matches DDC logic-high level; 1 μA IR prevents pull-up current loss; low VF clamping maintains I²C bus timing margins. |
| Automotive LIN Bus Node | Industrial RS-485 Transceiver Port |
Use Scenario: ESD hardening of LIN bus physical layer in automotive door modules exposed to assembly-line handling. IC Role / Device Role / Timing Role: BiSy-mode configured (pins 1–2 active, pin 3 open) to protect single-wire LIN line with symmetrical ±12.5 V standoff. Use Value: AEC-Q101 qualification ensures reliability; 58–75 pF capacitance at 0 V supports LIN's 20 kbps data rate without jitter increase. |
Use Scenario: Transient suppression on RS-485 differential pairs (A/B) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Two VGSOT12C-HG3-18 devices deployed-one per line-in BiAs mode with shared ground (pin 3) to suppress common-mode surges. Use Value: 20.2–26.0 V clamping at 18.5 A limits voltage stress on isolated RS-485 transceivers; SOT-23 footprint enables compact layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J12A-Q | Single-line unidirectional TVS; 12 V VRWM, 600 W PPP, SMA package (larger, higher inductance) | Not suitable for dual-line or space-constrained PCBs; lacks BiSy reconfiguration | Select when only single-line protection is needed and board area permits SMA footprint |
| TPD2E001DRYR | Two-line unidirectional ESD array; 5 V VRWM, 0.8 pF per line, X2SON package | Lower voltage rating and ultra-low capacitance target high-speed interfaces like USB 3.0-not compatible with 12 V systems | Select for 3.3–5 V high-frequency data lines where sub-1 pF capacitance is mandatory |
Compared with SMA6J12A-Q and TPD2E001DRYR, VGSOT12C-HG3-18 uniquely balances dual-line protection, 12 V system compatibility, AEC-Q101 qualification, and SOT-23 miniaturization-making it optimal for automotive and industrial 12 V data interfaces requiring both BiAs and BiSy operational flexibility.
Availability
VGSOT12C-HG3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive LIN bus nodes, and industrial RS-485 transceiver ports requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant ESD hardening.
Supply support for VGSOT12C-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 diodes, MOSFETs, and protection devices engineered for automotive, industrial, and computing applications.
The VGSOTxxC family-including VGSOT12C-HG3-18-is designed specifically for robust, dual-mode ESD protection of high-speed data lines in space-constrained and thermally demanding environments.
FAQ
What is the maximum reverse working voltage (VRWM) of the VGSOT12C-HG3-18?
The VGSOT12C-HG3-18 has a maximum reverse working voltage (VRWM) of 12 V, meaning it reliably blocks voltages up to 12 V in normal operation while remaining non-conductive. This value is confirmed in the "ELECTRICAL CHARACTERISTICS VGSOT12C" table on page 7 of Vishay document 86325, where VRWM is specified as 12 V with IR ≤ 1 μA at VR = 12 V. The VGSOT12C-HG3-18 maintains this rating across its full operating temperature range.
Can the VGSOT12C-HG3-18 be used in bidirectional protection mode?
Yes, the VGSOT12C-HG3-18 supports bidirectional protection in BiSy-MODE: configure pins 1 and 2 as the signal path with pin 3 left unconnected. In this mode, it delivers symmetrical clamping with 12.5 V VRWM and 16.4–28.1 V clamping voltage (at 1–18.5 A), validated per the "ELECTRICAL CHARACTERISTICS VGSOT12C" section on page 10 of Vishay document 86325. This makes VGSOT12C-HG3-18 suitable for RS-485 or CAN FD single-line protection.
What is the peak pulse power rating of the VGSOT12C-HG3-18 under 8/20 μs waveform?
The VGSOT12C-HG3-18 is rated for 480 W peak pulse power (PPP) under the 8/20 μs waveform per IEC 61000-4-5, as stated in the "ABSOLUTE MAXIMUM RATINGS VGSOT12C" table on page 3 of Vishay document 86325. This rating corresponds to a peak pulse current (IPPM) of 18.5 A and ensures reliable suppression of lightning-induced surges and heavy-duty ESD events without device failure.
Is the VGSOT12C-HG3-18 qualified to AEC-Q101 standards?
Yes, the VGSOT12C-HG3-18 is AEC-Q101 qualified, as explicitly noted in the "FEATURES" section on page 1 of Vishay document 86325 ("AEC-Q101 qualified available") and confirmed in the "PACKAGE DATA" table where all VGSOTxxC variants-including VGSOT12C-are listed with green environmental status and MSL level 1. This qualification covers human body model (HBM) >8 kV and full automotive temperature range (−55 °C to +150 °C).
What is the typical capacitance of the VGSOT12C-HG3-18 at 0 V reverse bias?
The typical capacitance of the VGSOT12C-HG3-18 at 0 V reverse bias and 1 MHz is 115–150 pF, as specified in the "ELECTRICAL CHARACTERISTICS VGSOT12C" table on page 7 of Vishay document 86325. This value applies to the dual-line BiAs configuration (pins 1–3 and 2–3). At 6 V reverse bias, capacitance drops to 54 pF, supporting clean signal transmission on 12 V-tolerant data lines such as LIN or legacy automotive sensors.
VGSOT12C-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):
- 12V (Max)
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 18.5A (8/20µs)
- Power - Peak Pulse:
- 480W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 115pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT12C-HG3-18 FAQ
1.How can I place an order for VGSOT12C-HG3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT12C-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 VGSOT12C-HG3-18 reliable?
The price and inventory of VGSOT12C-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 VGSOT12C-HG3-18 is usually 5 days.
3.What payment methods are accepted for VGSOT12C-HG3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT12C-HG3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT12C-HG3-18?
VGSOT12C-HG3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT12C-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 VGSOT12C-HG3-18?
For technical support, including VGSOT12C-HG3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT12C-HG3-18 requirements.
6.How does Aetrix verify that VGSOT12C-HG3-18 is sourced from the original manufacturer or authorized distributors?
All VGSOT12C-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 VGSOT12C-HG3-18 meets industry standards.
7.What is the process for return or replacement of VGSOT12C-HG3-18?
All VGSOT12C-HG3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT12C-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 VGSOT12C-HG3-18 part is unused and in its original packaging.
Return procedure for VGSOT12C-HG3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VGSOT12C-HG3-18 Tags
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