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Vishay General Semiconductor - Diodes Division VGSOT15-HG3-18
- Part No.:
- VGSOT15-HG3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT15-HG3-18.pdf
- Description:
- TVS DIODE 15VWM 28.8VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,915
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Product details
Overview
VGSOT15-HG3-18 from Vishay Semiconductors is a unidirectional single-line ESD protection diode in SOT-23 package, rated for 15 V reverse stand-off voltage (VRWM), ±30 kV IEC 61000-4-2 ESD immunity, and 450 W peak pulse power (8/20 μs). It delivers 23.5 V max clamping voltage at 15.5 A transient current and 100–120 pF capacitance at 0 V bias, targeting high-speed data line protection in automotive infotainment interfaces.
For engineers reviewing the VGSOT15-HG3-18 datasheet, VGSOT15-HG3-18 pinout, VGSOT15-HG3-18 application, or VGSOT15-HG3-18 equivalent, this page provides verified electrical parameters, BiAs-mode clamping behavior, AEC-Q101 qualification status, SOT-23 terminal mapping, and direct alternatives for signal-line ESD hardening in 12 V rail systems.
Technical Context
The VGSOT15-HG3-18 implements Bidirectional Asymmetrical (BiAs) protection mode: pin 1 grounded, pin 3 connected to protected line. During positive transients, it conducts above 16.5–20 V breakdown (VBR), clamping to ≤28.8 V at 15.5 A; negative transients are clamped near ground via low forward voltage (VF ≤ 2.2 V at IPPM).
It operates across –55 °C to +150 °C junction temperature, meets AEC-Q101 stress requirements including H3B-class human body model (>8 kV), and features e3 Sn terminations with MSL level 1 moisture sensitivity and UL 94 V-0 molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 15 V - maximum continuous DC operating voltage before leakage exceeds 1 μA; sets upper limit for safe signal swing in 12 V automotive bus applications. |
| VBR (min/typ/max) | 16.5 / 18 / 20 V - reverse breakdown threshold at 1 mA; defines onset of clamping for overvoltage events exceeding VRWM. |
| VC @ IPPM = 15.5 A | ≤28.8 V - peak clamping voltage during 8/20 μs surge; determines maximum voltage seen by downstream IC during worst-case ESD strike. |
| CD @ 0 V, 1 MHz | 100–120 pF - junction capacitance at zero bias; impacts signal integrity on high-speed lines like USB 2.0 or CAN FD. |
| PPPM (8/20 μs) | 450 W - peak pulse power handling capability; enables robust protection against IEC 61000-4-5 surges without thermal failure. |
| ESD immunity | ±30 kV contact/air discharge per IEC 61000-4-2 and ISO 10605 - certified ESD withstand level for system-level compliance testing. |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive environments with minimal derating. |
Pinout & Package
SOT-23 package: 3-pin surface-mount plastic case, 2.9 mm × 1.3 mm × 1.01 mm body, e3 matte tin terminations, MSL level 1, peak reflow ≤260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground (cathode connection) | Low-inductance return path for transient current; must be connected to solid chassis or power ground plane. |
| Pin 2 | No internal connection | Electrically isolated; no PCB trace or solder mask required-standard SOT-23 thermal pad layout applies. |
| Pin 3 | Anode / protected line input | Connects to data/signal line (e.g., LIN bus, sensor output); reverse-biased during normal operation, conducts during positive ESD events. |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-mode clamping | Asymmetric forward/reverse clamping: <1.2 V VF for negative transients, ≤28.8 V VC for 15.5 A positive surges-enables precise rail-to-rail protection without bidirectional leakage trade-offs. |
| AEC-Q101 qualified | Qualified per AEC-Q101 Rev D, including H3B-class HBM (>8 kV), temperature cycling, and high-temperature operating life-validates suitability for automotive ECUs and ADAS modules. |
| Low capacitance | 100–120 pF at 0 V bias and <43 pF at 7.5 V reverse bias-minimizes signal distortion on 1–10 Mbps serial buses such as LIN or SENT. |
| e3 Sn termination | Matte tin plating per J-STD-006; RoHS-compliant, lead-free, compatible with standard Pb-free reflow profiles and long-term intermetallic stability. |
| UL 94 V-0 molding | Flame-retardant epoxy compound rated to UL 94 V-0-meets automotive and industrial fire-safety requirements for enclosed electronics housings. |
Applications
| Automotive LIN Bus Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LIN transceiver inputs in body control modules exposed to cable discharge events during vehicle assembly or service. IC Role / Device Role / Timing Role: Unidirectional ESD clamp placed between LIN PHY and connector, grounding transients while preserving 19.2 kbps signal fidelity. Use Value: Maintains <120 pF capacitance to avoid LIN timing skew; clamps ±30 kV strikes to <28.8 V, preventing transceiver latch-up or damage. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Single-line transient suppressor on 4–20 mA or 0–10 V sensor output traces routed through noisy cabinet environments. Use Value: Blocks 15.5 A 8/20 μs surges from relay switching noise; 15 V VRWM aligns with common 24 V supply rails while limiting leakage to ≤1 μA. |
| USB 2.0 Data Line Protection | Automotive Infotainment Display Link |
Use Scenario: ESD hardening of D+ and D− lines in USB host ports embedded in car audio head units. IC Role / Device Role / Timing Role: Discrete unidirectional diode per line, leveraging low 100–120 pF capacitance to preserve 480 Mbps eye diagram integrity. Use Value: Enables full USB 2.0 compliance without series impedance; clamps contact ESD to <28.8 V while adding <0.5 dB insertion loss at 240 MHz. |
Use Scenario: Protecting MIPI D-PHY or FPD-Link III serializer outputs driving TFT displays in digital instrument clusters. IC Role / Device Role / Timing Role: Per-lane ESD suppression on high-speed differential pairs, using BiAs-mode to avoid forward conduction during common-mode swings. Use Value: Delivers <43 pF capacitance at 7.5 V bias-critical for maintaining >1 Gbps data rates; AEC-Q101 qualification ensures reliability across thermal cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | DO-214AC package, 15 V VRWM, 400 W PPPM (8/20 μs), 33.2 V VC @ 12.3 A-higher clamping, larger footprint, no AEC-Q101 rating. | Used in industrial power supplies where board space is less constrained and automotive qualification is not required. | Select SMAJ15A only if SOT-23 size is unnecessary and higher clamping voltage is acceptable for downstream IC tolerance. |
| TPD1E05U06DPYR | 0402 DFN package, 5.5 V VRWM, 120 W PPPM, 12.5 V VC @ 4 A, 0.45 pF CD-lower voltage rating, ultra-low capacitance, AEC-Q101 qualified. | Targeted at high-speed interfaces like HDMI or PCIe where sub-1 pF loading is mandatory and 15 V standoff is excessive. | Choose TPD1E05U06DPYR when protecting 3.3 V logic lines requiring <0.5 pF capacitance; not suitable for 12–24 V rail applications. |
Compared with SMAJ15A and TPD1E05U06DPYR, VGSOT15-HG3-18 uniquely balances 15 V VRWM, AEC-Q101 qualification, SOT-23 compactness, and 100–120 pF capacitance-making it optimal for automotive LIN, sensor analog outputs, and medium-speed data links where both voltage margin and board area matter.
Availability
VGSOT15-HG3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, and USB 2.0 peripheral protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for VGSOT15-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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with leadership in reliability-critical applications.
The VGSOTxx family was designed specifically for AEC-Q101-compliant unidirectional ESD protection in automotive and industrial signal paths, emphasizing low capacitance, precise clamping, and robust surge handling in SOT-23 form factor.
FAQ
What is the maximum reverse working voltage (VRWM) of the VGSOT15-HG3-18?
The VGSOT15-HG3-18 has a maximum reverse working voltage (VRWM) of 15 V, meaning it reliably blocks up to 15 V DC or steady-state signal voltages while maintaining leakage current ≤1 μA. This rating makes it suitable for protecting circuits powered from 12 V automotive rails or 15 V industrial supplies without false triggering during normal operation. The VGSOT15-HG3-18 achieves this with a specified reverse breakdown voltage (VBR) range of 16.5 V to 20 V at 1 mA test current.
Does the VGSOT15-HG3-18 meet automotive qualification standards?
Yes, the VGSOT15-HG3-18 is AEC-Q101 qualified, having passed stress tests including human body model (HBM) Class H3B (>8 kV), temperature cycling, and high-temperature operating life. Its construction-e3 Sn terminations, UL 94 V-0 molding compound, and MSL level 1 rating-supports reliable deployment in automotive ECUs, body control modules, and infotainment systems. The VGSOT15-HG3-18 datasheet explicitly lists AEC-Q101 qualification in its ordering information table.
How does the BiAs-mode operation affect circuit design for the VGSOT15-HG3-18?
BiAs-mode requires correct orientation: pin 1 to ground, pin 3 to the protected line. During normal operation, the device behaves as an open circuit up to 15 V. Positive transients above VBR (≥16.5 V) trigger reverse conduction to ground; negative transients conduct forward with <2.2 V clamping. This asymmetry eliminates need for series resistors or RC filters in many designs. The VGSOT15-HG3-18's pinout enforces this configuration inherently-pin 2 is NC, eliminating misconnection risk.
What is the typical capacitance of the VGSOT15-HG3-18 at operating bias?
The VGSOT15-HG3-18 exhibits 100–120 pF capacitance at 0 V reverse bias and 43 pF at 7.5 V reverse bias (1 MHz). This voltage-dependent capacitance is critical for high-speed applications: at nominal 12 V rail operation, the effective capacitance drops well below 50 pF, minimizing signal rise-time degradation on lines up to 10 Mbps. The VGSOT15-HG3-18's low-bias capacitance is confirmed in the "ELECTRICAL CHARACTERISTICS VGSOT15" table on page 7 of the Vishay document 86326.
Can the VGSOT15-HG3-18 replace older ESD diodes like PGB1010303 in automotive designs?
The VGSOT15-HG3-18 is not a direct replacement for PGB1010303 due to differing VRWM (15 V vs. 3.3 V), polarity (unidirectional vs. bidirectional), and package (SOT-23 vs. SOD-323). However, it serves analogous roles in higher-voltage signal paths-e.g., replacing PGB1010303 on 12 V LIN lines where its 15 V VRWM prevents leakage-induced errors. The VGSOT15-HG3-18 offers superior 450 W surge rating and AEC-Q101 validation versus legacy parts, but requires schematic and layout review for pin compatibility and bias alignment.
VGSOT15-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:
- 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:
- -
- Capacitance @ Frequency:
- 100pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT15-HG3-18 FAQ
1.How can I place an order for VGSOT15-HG3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT15-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 VGSOT15-HG3-18 reliable?
The price and inventory of VGSOT15-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 VGSOT15-HG3-18 is usually 5 days.
3.What payment methods are accepted for VGSOT15-HG3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT15-HG3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT15-HG3-18?
VGSOT15-HG3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT15-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 VGSOT15-HG3-18?
For technical support, including VGSOT15-HG3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT15-HG3-18 requirements.
6.How does Aetrix verify that VGSOT15-HG3-18 is sourced from the original manufacturer or authorized distributors?
All VGSOT15-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 VGSOT15-HG3-18 meets industry standards.
7.What is the process for return or replacement of VGSOT15-HG3-18?
All VGSOT15-HG3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT15-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 VGSOT15-HG3-18 part is unused and in its original packaging.
Return procedure for VGSOT15-HG3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VGSOT15-HG3-18 Tags
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