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Vishay General Semiconductor - Diodes Division GSOT04C-HG3-08
- Part No.:
- GSOT04C-HG3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT04C-HG3-08.pdf
- Description:
- TVS DIODE 4VWM 14.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:7,946
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Product details
Overview
GSOT04C-HG3-08 from Vishay Semiconductors is a two-line bidirectional ESD protection diode in SOT-23 package, rated for ±30 kV IEC 61000-4-2 contact/air discharge, 4 V reverse stand-off voltage (VRWM), and 30 A peak pulse current (IPPM) per line to ground. It delivers asymmetrical clamping (BiAs-mode) with 11.2 V max reverse clamping at 30 A and 4.5 V forward clamping at same current, enabling robust transient suppression in high-speed USB or HDMI data lines.
For engineers reviewing the GSOT04C-HG3-08 datasheet, GSOT04C-HG3-08 pinout, GSOT04C-HG3-08 application, or GSOT04C-HG3-08 equivalent, this device supports dual-line ESD protection in space-constrained consumer and automotive infotainment interfaces where low capacitance (310–450 pF), AEC-Q101 qualification, and green RoHS-compliant packaging are required.
Technical Context
The GSOT04C-HG3-08 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 conduction. Its internal structure consists of two monolithically integrated TVS diodes sharing a common cathode at pin 3.
It also supports BiSy-MODE (Bidirectional Symmetrical) operation when used as a single-line protector-pin 1 to signal, pin 2 to ground, pin 3 unconnected-delivering matched ±15.7 V clamping at 30 A with 155–225 pF capacitance, suitable for legacy RS-485 or CAN bus stubs requiring symmetrical surge handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Immunity | ±30 kV contact & air discharge per IEC 61000-4-2 - meets highest industrial ESD immunity requirement without external circuitry |
| Reverse Stand-off Voltage (VRWM) | 4 V - ensures no leakage or loading on 3.3 V logic/data lines during normal operation |
| Peak Pulse Current (IPPM) | 30 A per line-to-ground path - handles severe lightning-induced surges per IEC 61000-4-5 (8/20 μs) |
| Reverse Clamping Voltage (VC) | 11.2 V max at 30 A - limits voltage seen by downstream ICs to safe levels below 12 V rail tolerance |
| Capacitance (CD) | 310–450 pF at 0 V, 200 pF at 2 V - optimized for <100 Mbps USB 2.0 or HDMI DDC channel integrity |
| Operating Temperature | −55 °C to +150 °C - supports under-hood automotive and industrial control environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
SOT-23 package: 3-pin, surface-mount, e3 Sn-plated, MSL level 1, 8.8 mg weight, UL 94 V-0 molding compound, compatible with standard reflow profiles (peak ≤260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Line 1 Protection Diode | Connects to first protected signal line (e.g., USB D+); forms one half of BiAs dual-line path |
| Pin 2 | Anode of Line 2 Protection Diode | Connects to second protected signal line (e.g., USB D−); enables simultaneous two-line protection |
| Pin 3 | Common Cathode / Ground Terminal | Must be connected to system ground plane; carries full transient current from both lines during ESD events |
Key Features
| Feature | Design Value |
|---|---|
| Two-line ESD protection | Single SOT-23 device protects two independent data lines simultaneously-reduces BOM count vs. discrete diodes |
| BiAs-MODE asymmetrical clamping | Enables tighter voltage control on negative transients (VF ≈ 4.5 V @ 30 A) while maintaining high VRWM for signal integrity |
| Low leakage current | IR ≤ 20 μA at 4 V - prevents signal distortion or power drain in battery-powered portable devices |
| Green RoHS-compliant | e3 Sn plating and halogen-free molding compound - satisfies EU Directive 2011/65/EU and automotive OEM material compliance |
| Space-saving footprint | SOT-23 outline (2.8 × 2.35 mm) fits high-density PCB layouts where board area is constrained |
Applications
| USB 2.0 Interface Protection | HDMI DDC Channel Protection |
|---|---|
Use Scenario: Protecting differential USB 2.0 D+ and D− lines against ESD events during hot-plug insertion in portable docking stations. IC Role / Device Role / Timing Role: Two-line transient voltage suppressor placed immediately before USB connector, operating in BiAs-mode with pin 3 grounded. Use Value: Limits clamped voltage to ≤11.2 V at 30 A, preserving USB PHY functionality while maintaining 450 pF total capacitance for signal rise-time compliance. |
Use Scenario: Safeguarding HDMI Display Data Channel (DDC) SDA/SCL lines from ESD in AV receivers and set-top boxes. IC Role / Device Role / Timing Role: Dual-line ESD clamp between source and sink DDC buses, leveraging low 200 pF capacitance at 2 V bias to avoid I²C timing violations. Use Value: Enables reliable DDC communication up to 100 kHz with <1 μA leakage at 4 V, preventing false ACK/NACK due to leakage-induced voltage drop. |
| Automotive Infotainment Serial Links | Industrial RS-485 Stub Protection |
Use Scenario: Protecting LVDS or UART-based display interface lines in automotive head units exposed to ISO 10605 ESD pulses. IC Role / Device Role / Timing Role: AEC-Q101 qualified dual-line protector mounted at connector entry point, operating across −40 °C to +125 °C junction range. Use Value: Guarantees ±30 kV ESD immunity and 150 °C max TJ rating-meets OEM requirements for under-dash module reliability. |
Use Scenario: Adding localized ESD hardening to RS-485 node stubs in factory automation PLC backplanes. IC Role / Device Role / Timing Role: Configured in BiSy-mode (pin 1→line, pin 2→ground, pin 3 open) to deliver symmetrical ±15.7 V clamping at 30 A. Use Value: Provides matched positive/negative clamping without polarity sensitivity-ideal for bidirectional half-duplex RS-485 stubs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT04C-HG3-08 | Successor series with identical pinout, same VRWM (4 V), but improved 10.5 V max VC at 30 A and 280 pF typ capacitance | End-of-life replacement with enhanced clamping performance and lower parasitic capacitance | Select for new designs requiring extended product lifecycle beyond January 2025 and tighter clamping specs |
| SMF05CT1G | Single-line SOT-23 TVS (5 V VRWM), requires two devices for dual-line protection; higher 16.5 V VC at 20 A | Lacks integrated dual-line architecture-increases layout area and component count | Use only if BiAs/BiSy mode flexibility is unnecessary and VRWM margin >5 V is acceptable |
Compared with GSOT04C-HG3-08, VGSOT04C-HG3-08 offers lower clamping voltage and longer availability, while SMF05CT1G demands duplicated placement and delivers weaker transient suppression-making GSOT04C-HG3-08 optimal for cost-sensitive, space-constrained dual-line interfaces with strict 4 V VRWM requirements.
Availability
GSOT04C-HG3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI DDC channel hardening, and automotive infotainment serial links requiring stable component supply through end-of-life in January 2025.
Supply support for GSOT04C-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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability passive and protection components for automotive, industrial, and computing markets.
The GSOTxxC family was designed specifically for compact, high-performance ESD protection of high-speed data interfaces-emphasizing low capacitance, AEC-Q101 qualification, and dual-line integration in standard SOT-23 packages.
FAQ
What is the maximum clamping voltage of GSOT04C-HG3-08 during an ESD event?
The GSOT04C-HG3-08 exhibits a maximum reverse clamping voltage (VC) of 14.3 V at 30 A peak pulse current per line-to-ground path, measured per IEC 61000-4-5 (8/20 μs waveform). At lower currents (1 A), VC is ≤9 V. This value ensures downstream ICs remain within safe operating voltage margins during transient events.
Can GSOT04C-HG3-08 be used for single-line protection?
Yes, GSOT04C-HG3-08 supports BiSy-MODE operation for single-line protection: connect pin 1 to the signal line, pin 2 to ground, and leave pin 3 unconnected. In this configuration, it delivers symmetrical ±15.7 V clamping at 30 A with 155–225 pF capacitance-ideal for RS-485 or CAN stubs.
Is GSOT04C-HG3-08 qualified for automotive applications?
Yes, GSOT04C-HG3-08 is AEC-Q101 qualified and rated for operation from −55 °C to +150 °C junction temperature. It undergoes stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT) per automotive reliability standards.
What is the leakage current specification for GSOT04C-HG3-08 at its rated VRWM?
At its 4 V reverse stand-off voltage (VRWM), GSOT04C-HG3-08 guarantees a maximum reverse leakage current (IR) of 20 μA. This low leakage preserves signal integrity and minimizes power loss in battery-operated or high-impedance circuits such as I²C DDC channels.
How does the BiAs-MODE operation of GSOT04C-HG3-08 differ from standard TVS diodes?
BiAs-MODE uses pin 3 as a shared cathode for two independent anodes (pins 1 and 2), enabling true two-line protection with asymmetrical clamping: negative transients clamp near ground via forward conduction (VF ≈ 4.5 V), while positive transients clamp at higher reverse voltage (VC ≤ 14.3 V)-a behavior not achievable with discrete unidirectional TVS diodes.
GSOT04C-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:
- Last Time Buy
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 4V (Max)
- Voltage - Breakdown (Min):
- 5V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 30A (8/20µs)
- Power - Peak Pulse:
- 429W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 310pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT04C-HG3-08 FAQ
1.How can I place an order for GSOT04C-HG3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT04C-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 GSOT04C-HG3-08 reliable?
The price and inventory of GSOT04C-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 GSOT04C-HG3-08 is usually 5 days.
3.What payment methods are accepted for GSOT04C-HG3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT04C-HG3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT04C-HG3-08?
GSOT04C-HG3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT04C-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 GSOT04C-HG3-08?
For technical support, including GSOT04C-HG3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT04C-HG3-08 requirements.
6.How does Aetrix verify that GSOT04C-HG3-08 is sourced from the original manufacturer or authorized distributors?
All GSOT04C-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 GSOT04C-HG3-08 meets industry standards.
7.What is the process for return or replacement of GSOT04C-HG3-08?
All GSOT04C-HG3-08 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT04C-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 GSOT04C-HG3-08 part is unused and in its original packaging.
Return procedure for GSOT04C-HG3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT04C-HG3-08 Tags
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