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Vishay General Semiconductor - Diodes Division GSOT08C-HE3-08
- Part No.:
- GSOT08C-HE3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT08C-HE3-08.pdf
- Description:
- TVS DIODE 8VWM 19.2VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:551
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Product details
Overview
GSOT08C-HE3-08 from Vishay Semiconductors is a two-line bidirectional asymmetrical ESD protection diode in SOT-23 package, rated for ±30 kV IEC 61000-4-2 contact/air discharge, 8 V reverse stand-off voltage (VRWM), and 18 A peak pulse current (IPPM). It protects high-speed data lines such as USB 2.0 or HDMI interfaces against transient overvoltage events.
For engineers reviewing the GSOT08C-HE3-08 datasheet, GSOT08C-HE3-08 pinout, GSOT08C-HE3-08 application, or GSOT08C-HE3-08 equivalent, key selection criteria include clamping voltage at 18 A (≤19.2 V), low 125 pF capacitance at 4 V reverse bias, AEC-Q101 qualification readiness, and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The GSOT08C-HE3-08 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pins 1 and 2 connect to protected signal lines, pin 3 to ground, enabling independent clamping of positive transients (via reverse-biased diodes) and negative transients (via forward-biased diodes). Its asymmetry yields lower forward clamping (~3 V at 18 A) versus reverse clamping (~19.2 V at 18 A).
It supports dual-mode operation - two-line protection (pin 1 & 2 → signal, pin 3 → GND) or single-line symmetrical protection (pin 1 → signal, pin 2 → GND, pin 3 unconnected), delivering 8.5 V VRWM and 125 pF capacitance in the latter configuration. MSL level 1 rating permits standard reflow without dry-pack handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±30 kV contact/air per IEC 61000-4-2 - meets highest industrial and automotive ESD immunity requirements without external circuitry. |
| VRWM | 8 V - compatible with 3.3 V and 5 V logic systems while providing margin above operating voltage. |
| IPPM | 18 A (8/20 μs) - handles severe surge events per IEC 61000-4-5, suitable for USB, Ethernet, and sensor interface protection. |
| VC @ IPPM | ≤19.2 V (reverse) / ≤3 V (forward) - limits voltage stress on downstream ICs during ESD strikes. |
| Capacitance | 125 pF @ 4 V - preserves signal integrity on data lines up to ~100 Mbps without excessive loading. |
| Package | SOT-23 - industry-standard 3-pin footprint enabling drop-in replacement and automated assembly. |
| AEC-Q101 | Qualified variant available - supports automotive infotainment and body electronics applications requiring reliability validation. |
Pinout & Package
SOT-23 package: 3-pin surface-mount, 2.8 mm × 2.35 mm × 1.15 mm body, gull-wing leads, e3 Sn plating, UL 94 V-0 molding compound, MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 Anode/Cathode | Connects to first protected signal line (L1); forms one half of bidirectional protection path to ground (pin 3). |
| Pin 2 | Line 2 Anode/Cathode | Connects to second protected signal line (L2); forms second half of bidirectional protection path to ground (pin 3). |
| Pin 3 | Ground Reference | Must be connected to system ground; serves as common return for both protection paths in BiAs mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Asymmetrical Clamping (BiAs) | Enables low forward-voltage clamping (~3 V) for negative transients and controlled reverse clamping (~19.2 V) for positive transients - optimized for mixed-polarity threats. |
| Two-Line Protection Architecture | Single device protects two independent data lines (e.g., D+ and D−), reducing component count and board area vs. discrete diodes. |
| Low Capacitance at Operating Bias | 80 pF @ 4 V reverse bias - minimizes signal distortion and timing skew on high-speed interfaces like USB 2.0. |
| AEC-Q101 Qualified Option | Validated for automotive temperature range (−55 °C to +150 °C) and mechanical stress - supports under-hood and infotainment designs. |
| Standard SOT-23 Footprint | Compatible with existing pick-and-place equipment and reflow profiles (peak 260 °C), eliminating layout redesign. |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting D+ and D− differential pair in USB 2.0 host/device ports from ESD events during hot-plug or handling. IC Role / Device Role / Timing Role: Two-line ESD clamp placed immediately before the USB transceiver IC, referenced to system ground. Use Value: Maintains signal integrity with 125 pF capacitance while clamping transients to ≤19.2 V, preventing latch-up or damage to PHY layer. | Use Scenario: Safeguarding TMDS data channels (Ch0+, Ch0−) in HDMI source/sink connectors against electrostatic discharge. IC Role / Device Role / Timing Role: Bidirectional asymmetrical protector mounted at connector edge, with pins 1/2 on differential pairs and pin 3 grounded. Use Value: Limits voltage overshoot to <20 V during ±30 kV ESD strikes, preserving eye diagram margins and compliance with HDMI 1.4 signal integrity specs. |
| Automotive Sensor Bus Protection | Industrial RS-485 Transceiver Interface |
Use Scenario: Shielding LIN or CAN FD data lines in automotive body control modules from ESD and load-dump induced transients. IC Role / Device Role / Timing Role: Dual-line protector applied to bidirectional bus lines, leveraging AEC-Q101 qualified version for extended temperature operation. Use Value: Withstands −55 °C to +150 °C junction temperature and delivers 18 A surge capability - exceeds ISO 10605 requirements for vehicle subsystems. | Use Scenario: Guarding RS-485 transceiver A/B terminals in factory automation controllers exposed to field wiring ESD. IC Role / Device Role / Timing Role: Two-line clamp installed at PCB entry point, grounding via short trace to chassis ground plane. Use Value: 8 V VRWM ensures compatibility with ±7 V RS-485 common-mode range; 19.2 V clamping prevents transceiver input stage breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT08C-HG3-08 | Same electrical specs; green (halogen-free) molding compound and RoHS-compliant plating vs. standard Sn (e3). | Required for strict environmental compliance programs (e.g., EU automotive Tier 1 supply chains). | Select when halogen-free material content is mandated; identical PCB layout and performance. |
| GSOT08C-E3-08 | Identical protection parameters and SOT-23 package; differs only in packaging code (tape/reel quantity and moisture sensitivity labeling). | No functional difference; used interchangeably where procurement logistics favor 3K/reel vs. 10K/reel. | Choose based on volume order size and inventory management preferences - no design impact. |
Compared with VGSOT08C-HG3-08 and GSOT08C-E3-08, the GSOT08C-HE3-08 offers identical ESD robustness (±30 kV), clamping behavior, and footprint but uses standard Sn plating and standard-grade molding compound - making it optimal for cost-sensitive industrial designs where halogen-free certification is not required.
Availability
GSOT08C-HE3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI data lane safeguarding, and industrial RS-485 transceiver interface applications requiring stable component supply across production lifecycles.
Supply support for GSOT08C-HE3-08 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 Semiconductors is a global leader in discrete semiconductors, specializing in power management, sensing, and protection devices with emphasis on reliability and AEC-Q qualification.
The GSOTxxC family was engineered for high-density, low-capacitance ESD protection of high-speed digital interfaces in automotive, industrial, and consumer electronics - balancing surge robustness with signal fidelity.
FAQ
What is the maximum clamping voltage of the GSOT08C-HE3-08 during an ESD event?
The GSOT08C-HE3-08 clamps to ≤19.2 V in reverse direction and ≤3 V in forward direction when subjected to its rated 18 A peak pulse current (8/20 μs waveform). These values are measured per IEC 61000-4-5 and ensure downstream ICs remain within safe operating voltage limits during transient events. The asymmetrical clamping behavior is intrinsic to its BiAs-MODE architecture.
Can the GSOT08C-HE3-08 protect a single data line instead of two lines?
Yes, the GSOT08C-HE3-08 supports BiSy-MODE (bidirectional symmetrical) operation: connect pin 1 to the signal line, pin 2 to ground, and leave pin 3 unconnected. In this configuration, it delivers 8.5 V VRWM, 125 pF capacitance, and symmetrical clamping - ideal for protecting UART, SPI, or single-ended sensor lines where polarity-agnostic protection is needed.
Is the GSOT08C-HE3-08 qualified to AEC-Q101 standards?
The GSOT08C-HE3-08 itself is not AEC-Q101 qualified, but Vishay offers AEC-Q101 qualified variants within the GSOT08C family (e.g., GSOT08C-HG3-08). These share identical electrical characteristics and SOT-23 packaging but undergo additional stress testing for automotive use. Always verify qualification status using the full part number and official Vishay documentation.
What is the capacitance of the GSOT08C-HE3-08 at typical operating bias?
At 4 V reverse bias and 1 MHz, the GSOT08C-HE3-08 exhibits 80 pF typical capacitance - critical for maintaining signal rise/fall times on high-speed lines. At 0 V bias, capacitance rises to 160–250 pF (max), which must be considered in impedance-sensitive layouts. This low-bias capacitance enables reliable operation on USB 2.0 and other ~480 Mbps interfaces.
Does the GSOT08C-HE3-08 require a heatsink or thermal pad?
No, the GSOT08C-HE3-08 does not require a heatsink or thermal pad. Its SOT-23 package is designed for transient energy dissipation rather than continuous power handling. With a maximum junction temperature of +150 °C and MSL level 1 rating, it relies on PCB copper area for thermal relief during short-duration surges (e.g., 8/20 μs pulses), not steady-state conduction.
GSOT08C-HE3-08 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:
- Last Time Buy
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V (Max)
- Voltage - Breakdown (Min):
- 9V
- Voltage - Clamping (Max) @ Ipp:
- 19.2V
- Current - Peak Pulse (10/1000µs):
- 18A (8/20µs)
- Power - Peak Pulse:
- 345W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 160pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT08C-HE3-08 FAQ
1.How can I place an order for GSOT08C-HE3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT08C-HE3-08 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 GSOT08C-HE3-08 reliable?
The price and inventory of GSOT08C-HE3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT08C-HE3-08 is usually 5 days.
3.What payment methods are accepted for GSOT08C-HE3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT08C-HE3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT08C-HE3-08?
GSOT08C-HE3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT08C-HE3-08 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 GSOT08C-HE3-08?
For technical support, including GSOT08C-HE3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT08C-HE3-08 requirements.
6.How does Aetrix verify that GSOT08C-HE3-08 is sourced from the original manufacturer or authorized distributors?
All GSOT08C-HE3-08 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 GSOT08C-HE3-08 meets industry standards.
7.What is the process for return or replacement of GSOT08C-HE3-08?
All GSOT08C-HE3-08 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT08C-HE3-08, 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 GSOT08C-HE3-08 part is unused and in its original packaging.
Return procedure for GSOT08C-HE3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT08C-HE3-08 Tags
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