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Vishay General Semiconductor - Diodes Division VGSOT08-HG3-08
- Part No.:
- VGSOT08-HG3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT08-HG3-08.pdf
- Description:
- TVS DIODE 8VWM 19.2VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,021
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Product details
Overview
VGSOT08-HG3-08 from Vishay Semiconductors is a unidirectional single-line ESD protection diode in SOT-23 package, designed for high-reliability data line protection. It delivers 8 V reverse stand-off voltage (VRWM), ±30 kV IEC 61000-4-2/ISO 10605 ESD immunity, and 500 W peak pulse power (8/20 μs), enabling robust transient suppression in USB 2.0, HDMI, and industrial sensor interfaces.
For engineers reviewing the VGSOT08-HG3-08 datasheet, VGSOT08-HG3-08 pinout, VGSOT08-HG3-08 application, or VGSOT08-HG3-08 equivalent, this device offers verified AEC-Q101 qualification, low 175–250 pF capacitance at 0 V bias, and asymmetrical bidirectional clamping (BiAs-MODE) optimized for signal integrity in high-speed analog and digital lines.
Technical Context
VGSOT08-HG3-08 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pin 1 grounded, pin 3 connected to protected line. Reverse clamping occurs above 9–11 V breakdown (VBR), while forward clamping holds near 1 V (VF) during negative transients - enabling precise voltage limiting without DC path disruption.
It operates across –55 °C to +150 °C junction temperature, supports MSL level 1 reflow (peak 260 °C), and features UL 94 V-0 molding compound. Its 28 A peak pulse current (8/20 μs) and 3 A (10/1000 μs) rating align with IEC 61000-4-5 surge requirements for industrial port-level protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 8 V - Maximum continuous reverse working voltage before leakage exceeds 5 μA; sets upper limit for safe signal swing in protected line. |
| VBR (min/typ/max) | 9 / 10 / 11 V - Breakdown threshold at 1 mA IR; defines onset of reverse conduction and clamping behavior. |
| VC @ IPP = 28 A | 14.4–18 V - Clamped voltage during worst-case 8/20 μs surge; determines maximum stress on downstream IC input. |
| Capacitance @ 0 V | 175–250 pF - Signal-line loading at DC bias; low enough for USB 2.0 (480 Mbps) and HDMI 1.4 compliance. |
| ESD Immunity | ±30 kV contact/air discharge - Meets automotive and industrial ESD immunity standards per IEC 61000-4-2 and ISO 10605. |
| PPPM (8/20 μs) | 500 W - Peak pulse power handling capability; enables protection against fast, high-energy transients like lightning-induced surges. |
| Polarity | Unidirectional - Ground-referenced configuration; provides asymmetric clamping optimized for single-ended data lines. |
Pinout & Package
SOT-23 package: 3-pin, surface-mount, green RoHS-compliant molded case (UL 94 V-0), 9.2 mg weight, MSL level 1, 260 °C max reflow peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground (Anode common) | DC return path for ESD current; must be connected to low-impedance system ground plane. |
| Pin 2 | No connection (NC) | Internally isolated; no electrical function - must remain unconnected in PCB layout. |
| Pin 3 | Protected Line (Cathode) | Input/output node for signal/data line; clamps transients to ground via internal diode structure. |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-MODE clamping | Asymmetric forward (≤1.2 V) and reverse (≤18 V) clamping enables precise voltage limiting without compromising signal DC bias. |
| AEC-Q101 qualified | Qualified for automotive applications per AEC-Q101 Rev D; includes H3B-class ESD (>8 kV HBM) and extended temperature operation. |
| e3 Sn termination | Lead (Pb)-free, matte tin (Sn) plating per J-STD-020; ensures solderability and long-term intermetallic stability. |
| Low leakage | 5 μA max reverse current at VRWM = 8 V - minimizes power loss and avoids false triggering in battery-powered systems. |
| High surge robustness | 28 A peak pulse current (8/20 μs) and 44 W (10/1000 μs) rating support repeated surge events in industrial environments. |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD events during hot-plug insertion in industrial HMIs and medical devices. IC Role / Device Role / Timing Role: Standalone unidirectional TVS diode placed directly at connector, providing sub-nanosecond response to ±30 kV discharges. Use Value: 175–250 pF capacitance preserves signal integrity up to 480 Mbps; clamping voltage ≤18 V prevents damage to USB PHY transceivers. |
Use Scenario: Safeguarding TMDS data channels in HDMI 1.4 receivers against ESD in consumer AV equipment and digital signage. IC Role / Device Role / Timing Role: Point-of-entry protection on each differential pair, leveraging low capacitance and matched channel performance. Use Value: Asymmetrical clamping avoids DC offset shift on AC-coupled TMDS lines; 8 V VRWM accommodates common-mode voltage range. |
| Automotive Sensor Interface | Industrial RS-485 Transceiver Port |
Use Scenario: Shielding LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control units and body electronics. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to chassis ground, suppressing transients induced by load dump or relay switching. Use Value: AEC-Q101 qualification and –55 °C to +150 °C operation ensure reliability under under-hood thermal cycling and vibration. |
Use Scenario: Protecting RS-485 driver/receiver pins in factory automation gateways exposed to long cable runs and EMI-rich environments. IC Role / Device Role / Timing Role: Per-line protection on A/B differential inputs, with ground-referenced architecture compatible with isolated transceivers. Use Value: 500 W peak pulse power handles IEC 61000-4-5 surge coupling; low leakage (<5 μA) avoids bias current errors in precision measurement circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | Higher 800 W PPPM (8/20 μs), higher 100 pF capacitance, DO-214AC package (larger footprint, higher inductance). | Less suitable for high-speed data lines; better for power rail or lower-frequency signal protection. | Select SMAJ8.0A only when board space allows larger package and signal bandwidth < 10 MHz. |
| TPD2E001DRYR | 2-channel, 15 pF typical capacitance, 3.6 V VRWM, SOT-553 package; integrated dual-diode array with lower clamping voltage. | Designed for ultra-high-speed interfaces (e.g., USB 3.0, MIPI); not rated for AEC-Q101 or ±30 kV ESD. | Choose TPD2E001DRYR for compact multi-line protection where VRWM ≤ 3.6 V and automotive qualification is not required. |
Compared with SMAJ8.0A and TPD2E001DRYR, VGSOT08-HG3-08 uniquely balances 8 V VRWM, ±30 kV ESD rating, AEC-Q101 qualification, and SOT-23 form factor - making it optimal for automotive and industrial data-line protection where size, speed, and reliability are jointly constrained.
Availability
VGSOT08-HG3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor signal conditioning, and industrial RS-485 port hardening requiring stable component supply and long-term lifecycle assurance.
Supply support for VGSOT08-HG3-08 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.
VGSOT08-HG3-08 belongs to Vishay's VGSOTxx family of unidirectional ESD suppressors, engineered specifically for high-speed data line protection in automotive, industrial, and consumer electronics where low capacitance and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum operating temperature for VGSOT08-HG3-08?
VGSOT08-HG3-08 has a specified junction temperature range of –55 °C to +150 °C, enabling reliable operation in under-hood automotive environments and high-temperature industrial enclosures. This rating is validated per AEC-Q101 stress testing and confirmed in the Vishay datasheet revision 1.1 (Feb 2025). The device maintains full ESD immunity and clamping performance across this entire range.
Does VGSOT08-HG3-08 support bidirectional ESD protection?
VGSOT08-HG3-08 implements BiAs-MODE (Bidirectional Asymmetrical) protection: it clamps positive transients in reverse bias (≥9 V) and negative transients in forward bias (≤1.2 V), delivering effective bidirectional suppression. However, its unidirectional polarity designation reflects its ground-referenced, single-anode architecture - not symmetric clamping behavior. This asymmetry is intentional for signal-line integrity.
What is the capacitance of VGSOT08-HG3-08 at 4 V reverse bias?
At 4 V reverse bias and 1 MHz, VGSOT08-HG3-08 exhibits a typical capacitance of 30 pF, as specified in the "ELECTRICAL CHARACTERISTICS VGSOT08" table (page 6, Document No. 86326). This low-bias capacitance minimizes signal distortion on high-speed lines such as USB 2.0 and LVDS, and is significantly lower than its 0 V value (175–250 pF).
Is VGSOT08-HG3-08 qualified to AEC-Q101?
Yes, VGSOT08-HG3-08 is explicitly AEC-Q101 qualified, as stated in the "FEATURES" section and confirmed in the "PACKAGE DATA" table (page 2) of the Vishay datasheet. It meets AEC-Q101 stress test requirements including H3B-class human body model ESD (>8 kV), temperature cycling, and high-temperature operating life - making it suitable for automotive front-end electronics.
What is the peak pulse current rating for VGSOT08-HG3-08 under IEC 61000-4-5 conditions?
VGSOT08-HG3-08 supports 28 A peak pulse current (IPPM) under 8/20 μs waveform per IEC 61000-4-5, as documented in the "ABSOLUTE MAXIMUM RATINGS VGSOT08" table (page 3). This rating applies to single-shot events and defines the maximum transient energy the device can safely divert without degradation, supporting robust surge immunity in industrial port designs.
VGSOT08-HG3-08 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):
- 8V (Max)
- Voltage - Breakdown (Min):
- 9V
- Voltage - Clamping (Max) @ Ipp:
- 18V
- Current - Peak Pulse (10/1000µs):
- 28A (8/20µs)
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 175pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT08-HG3-08 FAQ
1.How can I place an order for VGSOT08-HG3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT08-HG3-08 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 VGSOT08-HG3-08 reliable?
The price and inventory of VGSOT08-HG3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VGSOT08-HG3-08 is usually 5 days.
3.What payment methods are accepted for VGSOT08-HG3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT08-HG3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT08-HG3-08?
VGSOT08-HG3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT08-HG3-08 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 VGSOT08-HG3-08?
For technical support, including VGSOT08-HG3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT08-HG3-08 requirements.
6.How does Aetrix verify that VGSOT08-HG3-08 is sourced from the original manufacturer or authorized distributors?
All VGSOT08-HG3-08 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 VGSOT08-HG3-08 meets industry standards.
7.What is the process for return or replacement of VGSOT08-HG3-08?
All VGSOT08-HG3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT08-HG3-08, 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 VGSOT08-HG3-08 part is unused and in its original packaging.
Return procedure for VGSOT08-HG3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VGSOT08-HG3-08 Tags
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