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Vishay General Semiconductor - Diodes Division VGSOT12C-G3-18
- Part No.:
- VGSOT12C-G3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT12C-G3-18.pdf
- Description:
- TVS DIODE 12VWM 26VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,686
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Product details
Overview
VGSOT12C-G3-18 from Vishay Semiconductors is a two-line unidirectional ESD protection diode in SOT-23 package, featuring common-anode dual-channel configuration, 12 V max reverse working 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-G3-18 datasheet, VGSOT12C-G3-18 pinout, VGSOT12C-G3-18 application, or VGSOT12C-G3-18 equivalent, key selection criteria include clamping voltage at 18.5 A (20.2–26 V), low 115–150 pF line capacitance at 0 V, 1 μA reverse leakage at 12 V, bidirectional asymmetrical (BiAs) and symmetrical (BiSy) operating modes, and AEC-Q101 qualification for automotive use.
Technical Context
The VGSOT12C-G3-18 implements a dual-diode common-anode topology enabling two-line unidirectional ESD protection with independent clamping paths to ground (Pin 3). Its BiAs-MODE operation provides asymmetric clamping-low forward-voltage (1.0–1.2 V typ.) for negative transients and controlled reverse breakdown (13.5–16.5 V) for positive transients.
In BiSy-MODE, Pins 1 and 2 form a single bidirectional path (Pin 3 floating), delivering symmetrical clamping with 12.5 V VRWM and 58–75 pF capacitance-ideal for balanced signal lines like RS-485 or CAN FD where polarity-agnostic protection is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12 V maximum reverse working voltage - defines safe operating range for protected data lines without leakage-induced signal distortion. |
| VBR | 13.5–16.5 V reverse breakdown voltage at 1 mA - sets precise turn-on threshold for positive transient suppression. |
| VC @ IPPM | 20.2–26 V clamping voltage at 18.5 A (8/20 μs) - determines worst-case voltage seen by downstream IC during surge events. |
| CD | 115–150 pF capacitance at 0 V, 54 pF at 6 V - ensures minimal signal integrity impact on 480 Mbps USB 2.0 or 1.65 Gbps HDMI channels. |
| IR | ≤1 μA reverse leakage at 12 V - prevents DC loading and battery drain in always-on portable systems. |
| ESD Immunity | ±30 kV contact/air discharge per IEC 61000-4-2 and ISO 10605 - exceeds Level 4 industrial and automotive ESD requirements. |
| PPP (8/20 μs) | 480 W peak pulse power - enables robust protection against lightning-induced surges and system-level transients. |
Pinout & Package
SOT-23 package (JEDEC TO-236AB), 3-pin surface-mount, 9.2 mg weight, UL 94 V-0 molding compound, 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 clamping path to ground via Pin 3 in BiAs mode. |
| Pin 2 | Anode of Diode 2 | Connects to second protected signal line (L2); shares common cathode (Pin 3) for dual-line protection. |
| Pin 3 | Common Cathode | Ground reference terminal; must be connected to system ground for BiAs operation; left floating for BiSy mode. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-line unidirectional protection | Enables simultaneous ESD hardening of two independent data lines (e.g., USB D+/D−) with shared ground return, reducing component count vs. discrete diodes. |
| Bidirectional asymmetrical (BiAs) mode | Delivers low 1.0–1.2 V forward clamping for negative transients and controlled 20.2–26 V reverse clamping for positive surges-preserving signal swing margins. |
| Bidirectional symmetrical (BiSy) mode | Supports single-line bipolar protection (Pins 1–2, Pin 3 open) with matched ±16.4–19.7 V clamping at 1 A-suitable for RS-485 or CAN bus termination points. |
| AEC-Q101 qualified | Validated for automotive under-hood and infotainment applications with guaranteed operation from −55 °C to +150 °C junction temperature. |
| e3 Sn terminations | Lead-free, RoHS-compliant matte tin plating ensures solderability and long-term intermetallic stability in high-reliability assemblies. |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− differential pair in portable USB host/device ports against user-handling ESD events. IC Role / Device Role / Timing Role: Two-line unidirectional ESD clamp placed immediately before USB transceiver IC input pins. Use Value: 115–150 pF capacitance avoids signal rise-time degradation at 480 Mbps; ±30 kV immunity meets IEC 61000-4-2 Level 4 compliance. | Use Scenario: Safeguarding TMDS clock and data channels in HDMI 1.4 receivers against hot-plug and cable-discharge transients. IC Role / Device Role / Timing Role: Dual-channel ESD suppressor mounted at HDMI connector, with common cathode tied to chassis ground. Use Value: 20.2–26 V clamping at 18.5 A limits voltage stress on HDMI PHY; 12 V VRWM accommodates 3.3 V logic swing with margin. |
| Automotive Infotainment Data Lines | Industrial RS-485 Transceiver Protection |
Use Scenario: Shielding LVDS or FPD-Link III video/data buses in automotive head units and digital clusters from ESD and load-dump coupling. IC Role / Device Role / Timing Role: AEC-Q101-qualified dual-diode array protecting two high-speed serial lanes with shared ground return. Use Value: −55 °C to +150 °C operating range supports under-dash mounting; 480 W pulse rating handles coupled transients from 12 V power rail switching. | Use Scenario: Adding robust ESD resilience to RS-485 half-duplex transceivers in factory automation PLCs and motor drives. IC Role / Device Role / Timing Role: Configured in BiSy mode (Pins 1–2 active, Pin 3 open) to provide symmetrical ±16.4–19.7 V clamping on A/B differential pair. Use Value: 58–75 pF capacitance preserves 20 Mbps signaling integrity; 12.5 V VRWM aligns with RS-485 common-mode voltage range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J12A | Single-line unidirectional TVS, DO-214AC package, 12 V VRWM, 600 W PPP, 150 pF capacitance. | Requires two devices for dual-line protection; larger footprint; no BiSy mode support. | Select when board space allows discrete placement and only unidirectional protection is needed. |
| TPD2E001DRYR | Two-line unidirectional ESD array, SOT-553, 5 V VRWM, 3.5 A IPPM, 12 pF capacitance. | Lower VRWM and clamping voltage; optimized for 3.3 V logic; not AEC-Q101 qualified. | Prefer for low-voltage, high-speed interfaces like I²C or GPIO where ultra-low capacitance is critical. |
Compared with SMA6J12A and TPD2E001DRYR, VGSOT12C-G3-18 uniquely delivers dual-line protection in compact SOT-23 with AEC-Q101 qualification, BiAs/BiSy mode flexibility, and optimal balance of 12 V VRWM, 480 W surge capability, and 115–150 pF capacitance for USB/HDMI automotive and industrial designs.
Availability
VGSOT12C-G3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI signal line hardening, and automotive infotainment data line safeguarding requiring stable component supply across production lifecycles.
Supply support for VGSOT12C-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 high-density, dual-line ESD protection in space-constrained applications-emphasizing low capacitance, AEC-Q101 qualification, and flexible BiAs/BiSy operational modes for modern data interfaces.
FAQ
What is the maximum reverse working voltage (VRWM) of the VGSOT12C-G3-18?
The VGSOT12C-G3-18 has a maximum reverse working voltage (VRWM) of 12 V, verified per Vishay's electrical characteristics table for VGSOT12C. This value defines the highest continuous DC or peak AC voltage the device can withstand without significant leakage current (≤1 μA at 12 V), making it suitable for 3.3 V and 5 V logic interfaces with safety margin.
How does the VGSOT12C-G3-18 support both BiAs and BiSy protection modes?
The VGSOT12C-G3-18 supports BiAs mode with Pin 3 grounded and Pins 1/2 connected to separate signal lines-enabling asymmetric clamping (low VF for negative, controlled VBR for positive transients). For BiSy mode, Pin 3 is left unconnected while Pins 1 and 2 form a bidirectional path, delivering symmetrical clamping with 12.5 V VRWM and matched positive/negative clamping behavior.
Is the VGSOT12C-G3-18 qualified for automotive applications?
Yes, the VGSOT12C-G3-18 is AEC-Q101 qualified, as confirmed in Vishay's ordering information and package data tables. It operates across −55 °C to +150 °C junction temperature, features e3 Sn terminations, and meets stringent automotive reliability standards-making it appropriate for infotainment, ADAS sensor interfaces, and body control modules.
What is the clamping voltage of the VGSOT12C-G3-18 at its maximum peak pulse current?
At its maximum peak pulse current of 18.5 A (8/20 μs waveform), the VGSOT12C-G3-18 exhibits a reverse clamping voltage (VC) of 20.2–26 V, per the "ELECTRICAL CHARACTERISTICS VGSOT12C" table. This value represents the maximum voltage imposed on protected circuitry during worst-case surge events, ensuring downstream ICs remain within safe operating limits.
Can the VGSOT12C-G3-18 be used for HDMI 1.4 signal line protection?
Yes, the VGSOT12C-G3-18 is suitable for HDMI 1.4 signal line protection: its 115–150 pF capacitance at 0 V minimally impacts 1.65 Gbps TMDS eye diagrams, 12 V VRWM accommodates HDMI's 3.3 V logic swing with margin, and ±30 kV ESD immunity exceeds IEC 61000-4-2 Level 4-critical for consumer-facing display connectors.
VGSOT12C-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- 115pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT12C-G3-18 FAQ
1.How can I place an order for VGSOT12C-G3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT12C-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 VGSOT12C-G3-18 reliable?
The price and inventory of VGSOT12C-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 VGSOT12C-G3-18 is usually 5 days.
3.What payment methods are accepted for VGSOT12C-G3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT12C-G3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT12C-G3-18?
VGSOT12C-G3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT12C-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 VGSOT12C-G3-18?
For technical support, including VGSOT12C-G3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT12C-G3-18 requirements.
6.How does Aetrix verify that VGSOT12C-G3-18 is sourced from the original manufacturer or authorized distributors?
All VGSOT12C-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 VGSOT12C-G3-18 meets industry standards.
7.What is the process for return or replacement of VGSOT12C-G3-18?
All VGSOT12C-G3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT12C-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 VGSOT12C-G3-18 part is unused and in its original packaging.
Return procedure for VGSOT12C-G3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VGSOT12C-G3-18 Tags
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