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Vishay General Semiconductor - Diodes Division VGSOT15-G3-18
- Part No.:
- VGSOT15-G3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT15-G3-18.pdf
- Description:
- TVS DIODE 15VWM 28.8VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,733
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Product details
Overview
VGSOT15-G3-18 from Vishay Semiconductors is a unidirectional single-line ESD protection diode in SOT-23 package, designed for data line protection in automotive and industrial interfaces. It provides ±30 kV IEC 61000-4-2/ISO 10605 ESD immunity, 15 V reverse stand-off voltage (VRWM), and clamps transients to ≤28.8 V at 15.5 A (8/20 μs). It is AEC-Q101 qualified and used in CAN, LIN, and sensor signal conditioning circuits.
For engineers reviewing the VGSOT15-G3-18 datasheet, VGSOT15-G3-18 pinout, VGSOT15-G3-18 application, or VGSOT15-G3-18 equivalent, this page delivers verified electrical specs, BiAs-mode clamping behavior, SOT-23 terminal mapping, automotive-grade reliability data, and real-world use cases for high-reliability signal line protection.
Technical Context
The VGSOT15-G3-18 implements Bidirectional Asymmetrical (BiAs) protection mode: pin 1 connects to ground, pin 3 to the protected signal line. In normal operation (0–15 V), it presents high impedance (>1 μA leakage at VR = 15 V); during positive transients, it conducts above VBR (16.5–20 V) with reverse clamping up to 28.8 V; negative transients are clamped near ground via low VF (≤2.2 V at 15.5 A).
Its 100–120 pF capacitance at 0 V reverse bias enables use in medium-speed digital lines (e.g., LIN bus, UART, analog sensor outputs), while its 150 °C max junction temperature and MSL Level 1 rating support reflow-compatible manufacturing and under-hood automotive deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 15 V - Maximum continuous working voltage before conduction; sets upper limit for safe signal swing in protected line. |
| VBR (min/typ/max) | 16.5 / 18 / 20 V - Reverse breakdown threshold; defines onset of clamping for positive ESD events. |
| VC @ IPPM = 15.5 A | ≤28.8 V - Peak clamping voltage during 8/20 μs surge; determines maximum stress on downstream IC inputs. |
| VF @ IPPM = 15.5 A | ≤2.2 V - Forward clamping level for negative transients; ensures negative excursions stay within safe IC input range. |
| CD @ VR = 0 V | 100–120 pF - Junction capacitance at zero bias; impacts signal integrity on lines up to ~10 Mbps (e.g., LIN, CAN FD stubs). |
| ESD Immunity | ±30 kV contact/air (IEC 61000-4-2 & ISO 10605) - Validated robustness against human-body and system-level ESD events. |
| AEC-Q101 Qualified | Yes - Certified for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces. |
Pinout & Package
SOT-23 plastic surface-mount package (9.2 mg weight, UL 94 V-0 molding compound, MSL Level 1, peak reflow ≤260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground (Anode common) | Low-inductance return path for transient current; must be connected to clean system ground plane. |
| Pin 2 | No internal connection | Electrically isolated; no PCB trace or thermal pad required; may be left floating or grounded for mechanical stability only. |
| Pin 3 | Protected Line (Cathode) | Input/output node for signal line (e.g., LIN bus, sensor output); clamps to ground during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-MODE protection | Asymmetric clamping: 28.8 V reverse / ≤2.2 V forward - preserves signal integrity while enabling robust bidirectional surge handling. |
| e3 Sn termination | RoHS-compliant matte tin plating - ensures solderability, corrosion resistance, and compatibility with lead-free assembly processes. |
| Low leakage current | ≤1 μA at VR = 15 V - minimizes power loss and avoids loading on high-impedance sensor or reference lines. |
| High pulse power rating | 450 W (8/20 μs), 44 W (10/1000 μs) - sustains multiple high-energy transients without degradation in automotive environments. |
| Thermal robustness | TJ max = +150 °C - supports operation in under-hood and industrial control cabinet applications with minimal derating. |
Applications
| Automotive LIN Bus Protection | Industrial Analog Sensor Interface |
|---|---|
Use Scenario: Protecting LIN transceiver pins against ESD during vehicle assembly, service, or electromagnetic disturbances in cabin networks. IC Role / Device Role / Timing Role: Standalone unidirectional TVS diode placed between LIN data line and chassis ground. Use Value: Prevents latch-up or damage to LIN PHY ICs while maintaining <120 pF loading for reliable 19.2 kbps communication. |
Use Scenario: Safeguarding 4–20 mA or 0–10 V analog outputs from field wiring-induced surges in factory automation sensors. IC Role / Device Role / Timing Role: Signal-line protector on transmitter side, upstream of isolation or ADC front-end. Use Value: Enables >15 V working range and sub-1 μA leakage to preserve accuracy of precision current/voltage loops. |
| Automotive Body Control Module I/O | Consumer Appliance Communication Port |
Use Scenario: Shielding GPIOs and wake-up lines in BCMs from ESD during module installation or user interaction (e.g., door handle switches). IC Role / Device Role / Timing Role: Point-of-entry ESD clamp on low-speed digital inputs tied to microcontroller pins. Use Value: Delivers ±30 kV contact discharge immunity without adding propagation delay or signal distortion to wake-up timing. |
Use Scenario: Hardening RS-485 or UART ports in smart home hubs against user-handling ESD and AC mains coupling. IC Role / Device Role / Timing Role: Primary ESD suppression device on differential or single-ended serial interface traces. Use Value: Maintains <120 pF capacitance to avoid baud rate limitation while meeting IEC 61000-4-2 Level 4 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Higher VRWM (15 V), but bidirectional, higher capacitance (150 pF), larger SMA package (not SOT-23). | Used where board space allows larger footprint and bidirectional protection is required (e.g., USB D+/D−). | Select VGSOT15-G3-18 for SOT-23 space constraints and unidirectional signal lines; choose SMAJ15A only if bidirectionality and higher surge margin outweigh size penalty. |
| TPD2E001DRYR | Lower VRWM (5.5 V), dual-channel, 12 pF capacitance, same SOT-23-6 package - optimized for high-speed data (USB 2.0). | Targeted at consumer port protection; insufficient VRWM for 12 V automotive signals. | VGSOT15-G3-18 is preferred for 12–15 V nominal systems (e.g., LIN, analog sensors); TPD2E001DRYR suits 3.3 V logic-level interfaces only. |
Compared with SMAJ15A and TPD2E001DRYR, VGSOT15-G3-18 uniquely balances 15 V working voltage, SOT-23 compactness, ±30 kV ESD rating, and automotive qualification - making it optimal for space-constrained, medium-speed automotive and industrial signal protection where unidirectional clamping suffices.
Availability
VGSOT15-G3-18 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and LIN bus subsystems requiring stable component supply across long production lifecycles.
Supply support for VGSOT15-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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with leadership in reliability-critical protection devices.
VGSOT15-G3-18 belongs to the VGSOTxx family of unidirectional ESD suppressors engineered specifically for automotive-grade signal line protection in harsh environments, emphasizing AEC-Q101 compliance and BiAs clamping performance.
FAQ
What is the maximum operating temperature for VGSOT15-G3-18?
The VGSOT15-G3-18 has a maximum junction temperature (TJ) of +150 °C and operates from –55 °C to +150 °C. This rating enables deployment in under-hood automotive locations and industrial enclosures without thermal derating, provided PCB copper area and airflow meet Vishay's recommended SOT-23 thermal layout guidelines. The device remains fully functional across this full range when mounted per JEDEC standards.
Is VGSOT15-G3-18 AEC-Q101 qualified?
Yes, VGSOT15-G3-18 is AEC-Q101 qualified - explicitly confirmed in Vishay's official documentation (Document Number: 86326, Rev. 1.1). This qualification covers stress tests including HTGB, HTRB, TCT, and ESD, validating its suitability for automotive electronic control units, body modules, and sensor nodes where reliability under thermal cycling and vibration is mandatory. VGSOT15-G3-18 carries the "G3" environmental code denoting green, lead-free, RoHS-compliant construction.
What does the "-18" suffix mean in VGSOT15-G3-18?
The "-18" suffix in VGSOT15-G3-18 indicates the packaging configuration: 3,000 units per 7-inch reel on 8 mm tape, with 15,000 units per box as minimum order quantity (MOQ). This matches Vishay's standard ordering code convention shown in the "Ordering Information" section of Document 86326. It does not denote electrical variant, temperature grade, or revision - all VGSOT15-G3-xx variants share identical electrical and thermal specifications.
How does VGSOT15-G3-18 achieve BiAs-MODE clamping?
VGSOT15-G3-18 achieves Bidirectional Asymmetrical (BiAs) clamping by leveraging its internal unidirectional structure: pin 1 (anode) to ground and pin 3 (cathode) to signal. Positive transients trigger reverse breakdown (VBR ≈ 18 V), clamping up to 28.8 V; negative transients forward-bias the junction, clamping tightly near ground (VF ≤ 2.2 V at 15.5 A). This asymmetry protects sensitive inputs without distorting negative signal swings - a key advantage over symmetrical TVS diodes in DC-biased lines.
Can VGSOT15-G3-18 be used on a 12 V automotive power rail?
No - VGSOT15-G3-18 is rated for signal-line protection only, with VRWM = 15 V and absolute max VR = 15 V. It is not intended for power rail (e.g., 12 V battery line) surge suppression, which requires higher power ratings (e.g., 600 W+), different clamping profiles, and often bidirectional capability. Using VGSOT15-G3-18 on a 12 V rail risks premature conduction due to normal voltage ripple and load dump transients exceeding its 15 V standoff. It is strictly for data/sensor lines referenced to ground.
VGSOT15-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V (Max)
- Voltage - Breakdown (Min):
- 16.5V
- Voltage - Clamping (Max) @ Ipp:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 15.5A (8/20µs)
- Power - Peak Pulse:
- 450W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 100pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT15-G3-18 FAQ
1.How can I place an order for VGSOT15-G3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT15-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 VGSOT15-G3-18 reliable?
The price and inventory of VGSOT15-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 VGSOT15-G3-18 is usually 5 days.
3.What payment methods are accepted for VGSOT15-G3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT15-G3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT15-G3-18?
VGSOT15-G3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT15-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 VGSOT15-G3-18?
For technical support, including VGSOT15-G3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT15-G3-18 requirements.
6.How does Aetrix verify that VGSOT15-G3-18 is sourced from the original manufacturer or authorized distributors?
All VGSOT15-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 VGSOT15-G3-18 meets industry standards.
7.What is the process for return or replacement of VGSOT15-G3-18?
All VGSOT15-G3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT15-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 VGSOT15-G3-18 part is unused and in its original packaging.
Return procedure for VGSOT15-G3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VGSOT15-G3-18 Tags
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