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Vishay General Semiconductor - Diodes Division GSOT04C-E3-08
- Part No.:
- GSOT04C-E3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT04C-E3-08.pdf
- Description:
- TVS DIODE 4VWM 14.3VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:23,334
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Product details
Overview
GSOT04C-E3-08 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 path. It serves as primary transient suppression for USB 2.0 data lines, HDMI hot-plug interfaces, and industrial sensor I/O.
For engineers reviewing the GSOT04C-E3-08 datasheet, GSOT04C-E3-08 pinout, GSOT04C-E3-08 application, or GSOT04C-E3-08 equivalent, key selection criteria include its BiAs-mode asymmetrical clamping (11.2 V max VC at 30 A), 310 pF typical capacitance at 0 V, AEC-Q101 qualification option, SOT-23 footprint compatibility, and end-of-life status with VGSOTxxC migration path.
Technical Context
The GSOT04C-E3-08 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 dual-diode structure supports parallel use for doubled surge capacity.
It also supports BiSy-MODE (Bidirectional Symmetrical) operation when pin 3 is left unconnected and pins 1–2 form a single-line path, delivering matched ±15.7 V clamping at 30 A with 155 pF capacitance - optimized for balanced differential buses requiring symmetrical ESD response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD immunity | ±30 kV contact & air discharge per IEC 61000-4-2 - meets highest system-level ESD robustness requirements for consumer and automotive ports. |
| Reverse stand-off voltage (VRWM) | 4 V - compatible with 3.3 V logic systems while providing margin against normal operating voltage excursions. |
| Peak pulse current (IPPM) | 30 A per line-to-ground path (IEC 61000-4-5, 8/20 μs) - sustains high-energy surges without failure. |
| Clamping voltage (VC) | 11.2 V max at 30 A (line-to-ground) - limits voltage seen by downstream ICs below absolute maximum ratings. |
| Capacitance (CD) | 310 pF typical at 0 V, 200 pF at 2 V - balances ESD protection strength with signal integrity for <12 Mbps data lines. |
| Operating temperature | −55 °C to +150 °C junction - supports under-hood automotive, industrial control, and extended-environment deployments. |
| AEC-Q101 qualified | Available in AEC-Q101-qualified variant - validated for automotive electronics reliability including HTOL, TC, and ESD stress testing. |
Pinout & Package
SOT-23 package: 3-pin, surface-mount, e3 Sn-plated terminals, MSL level 1, 260 °C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 anode / cathode | Connects to first protected signal line (L1); forms one half of BiAs protection pair with Pin 3. |
| Pin 2 | Line 2 anode / cathode | Connects to second protected signal line (L2); forms second half of BiAs protection pair with Pin 3. |
| Pin 3 | Ground reference | Must be connected to system ground to enable BiAs-mode; left floating for BiSy-mode single-line operation. |
Key Features
| Feature | Design Value |
|---|---|
| Two-line ESD protection | Single SOT-23 device protects two independent data/signal lines simultaneously - reduces BOM count and PCB area vs. discrete diodes. |
| BiAs-MODE asymmetry | Forward clamping ~4.5 V at 30 A vs. reverse clamping ~11.2 V - preserves low-voltage logic integrity during negative transients while limiting positive overshoot. |
| Parallel configuration support | Two GSOT04C-E3-08 units can be paralleled to double IPPM (60 A) and halve effective clamping impedance - enables upgrade path for higher surge zones. |
| e3 matte tin termination | RoHS-compliant, lead-free, Sn-plated terminals with no post-plate annealing - ensures solderability and eliminates whisker risk in long-life applications. |
| Low leakage current | 20 μA max at 4 V VR - minimizes standby power loss and avoids signal distortion in high-impedance analog or battery-powered circuits. |
Applications
| USB 2.0 Interface Protection | HDMI Hot-Plug Detection Line |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 peripherals against ESD events during cable insertion/removal in consumer electronics. IC Role / Device Role / Timing Role: Primary front-end ESD clamp placed immediately after connector, before USB transceiver IC. Use Value: Maintains 480 Mbps signal integrity with 310 pF capacitance while clamping transients to ≤11.2 V - prevents transceiver latch-up or damage. |
Use Scenario: Safeguarding HDMI HPD (Hot Plug Detect) line against user-induced ESD during display connection in AV receivers and set-top boxes. IC Role / Device Role / Timing Role: Standalone voltage clamp on open-drain HPD signal routed to SoC GPIO. Use Value: 4 V VRWM aligns with 3.3 V HPD logic; ±30 kV ESD rating exceeds IEC 61000-4-2 Level 4 - eliminates false plug/unplug detection. |
| Automotive Sensor I/O | Industrial RS-485 Transceiver Port |
Use Scenario: Shielding LIN bus or analog sensor outputs (e.g., temperature, pressure) in engine control modules exposed to under-hood ESD. IC Role / Device Role / Timing Role: Secondary protection stage following common-mode choke, directly at connector entry point. Use Value: −55 °C to +150 °C operation and AEC-Q101 qualification ensure reliability across thermal cycling and vibration environments. |
Use Scenario: Protecting RS-485 transceiver A/B differential pair in factory automation gateways subject to field wiring ESD. IC Role / Device Role / Timing Role: Point-of-entry transient suppressor mounted adjacent to DB9 or terminal block interface. Use Value: 30 A IPPM withstands induced surges from nearby motor switching; BiSy-mode option provides symmetrical clamping for differential signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT04C | Successor series with identical SOT-23 footprint, same VRWM (4 V), and improved 35 A IPPM rating; RoHS-compliant, green molding compound. | Drop-in replacement for new designs; not recommended for legacy production due to minor parameter shifts affecting margin-critical layouts. | Select VGSOT04C for new designs requiring extended lifecycle beyond January 2025 EOL date of GSOT04C-E3-08. |
| TPD2E001DRYR | TI device: 2-channel, 5.5 V VRWM, 3.5 A IPPM, 10 pF capacitance - lower clamping energy but significantly reduced parasitic capacitance. | Better suited for high-speed interfaces (>480 Mbps) where GSOT04C-E3-08's 310 pF would degrade eye diagram; requires redesign due to different pinout and lower surge rating. | Choose TPD2E001DRYR only when signal bandwidth >100 MHz demands sub-15 pF loading; verify layout changes for non-drop-in pin assignment. |
Compared with VGSOT04C, GSOT04C-E3-08 offers proven field reliability but faces obsolescence; compared with TPD2E001DRYR, it delivers 8.6× higher surge current handling at the cost of 31× higher capacitance - making it optimal for cost-sensitive, medium-speed industrial I/O rather than high-frequency data links.
Availability
GSOT04C-E3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor I/O, and industrial RS-485 transceiver port applications requiring stable component supply through its end-of-life date in January 2025.
Supply support for GSOT04C-E3-08 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 circuit protection components with emphasis on reliability and AEC-Q qualification.
The GSOTxxC family was designed specifically for robust, space-constrained ESD protection of high-speed and mixed-signal interfaces in automotive, industrial, and consumer electronics - prioritizing surge resilience over ultra-low capacitance.
FAQ
What is the exact pin configuration and polarity of GSOT04C-E3-08?
The GSOT04C-E3-08 uses a standard SOT-23 package with Pin 1 and Pin 2 as bidirectional signal terminals and Pin 3 as the ground reference. In BiAs-MODE (default), Pins 1 and 2 connect to protected lines and Pin 3 to ground; in BiSy-MODE, Pin 3 is left unconnected and Pins 1–2 form a single symmetrical path. Polarity is inherent to the internal dual-diode structure - no external orientation marking is required.
Is GSOT04C-E3-08 qualified to AEC-Q101, and what does that mean for automotive use?
Yes, GSOT04C-E3-08 is available in an AEC-Q101-qualified version (denoted by suffix "-HE3-08" or "-HG3-08"). This qualification confirms successful completion of stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and ESD robustness per AEC standards - validating suitability for automotive powertrain, body, and infotainment systems where reliability under thermal and electrical stress is critical.
How does the BiAs-MODE operation of GSOT04C-E3-08 differ from standard TVS diodes?
Unlike unidirectional or symmetrical TVS diodes, GSOT04C-E3-08's BiAs-MODE delivers asymmetric clamping: negative transients clamp near 4.5 V (forward VF), while positive transients clamp at up to 11.2 V (reverse VC). This preserves low-voltage logic thresholds during negative ESD events and avoids over-clamping on positive edges - a design advantage for 3.3 V systems where tight voltage margins exist.
What is the end-of-life timeline for GSOT04C-E3-08, and what is the recommended migration path?
Vishay has announced End of Life for GSOT04C-E3-08 in January 2025. The official migration path is the VGSOTxxC series - specifically VGSOT04C - which maintains identical SOT-23 packaging, pinout, and VRWM (4 V), while improving peak pulse current to 35 A and using green molding compound. Customers should initiate qualification of VGSOT04C well before Q4 2024 to avoid supply disruption.
Can GSOT04C-E3-08 be used for single-line protection, and how does performance change?
Yes - GSOT04C-E3-08 supports BiSy-MODE single-line operation when Pin 3 is left unconnected and Pins 1–2 are used as a differential pair. In this mode, VRWM increases to 4.5 V, clamping voltage rises to 15.7 V at 30 A, and capacitance drops to 155 pF. This configuration suits balanced buses like RS-422 or legacy CAN where symmetrical transient response is required, though with reduced surge margin versus line-to-ground use.
GSOT04C-E3-08 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:
- General Purpose
- Capacitance @ Frequency:
- 310pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT04C-E3-08 FAQ
1.How can I place an order for GSOT04C-E3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT04C-E3-08 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-E3-08 reliable?
The price and inventory of GSOT04C-E3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT04C-E3-08 is usually 5 days.
3.What payment methods are accepted for GSOT04C-E3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT04C-E3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT04C-E3-08?
GSOT04C-E3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT04C-E3-08 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-E3-08?
For technical support, including GSOT04C-E3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT04C-E3-08 requirements.
6.How does Aetrix verify that GSOT04C-E3-08 is sourced from the original manufacturer or authorized distributors?
All GSOT04C-E3-08 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-E3-08 meets industry standards.
7.What is the process for return or replacement of GSOT04C-E3-08?
All GSOT04C-E3-08 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT04C-E3-08, 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-E3-08 part is unused and in its original packaging.
Return procedure for GSOT04C-E3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT04C-E3-08 Tags
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