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Vishay General Semiconductor - Diodes Division GSOT03C-G3-08
- Part No.:
- GSOT03C-G3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT03C-G3-08.pdf
- Description:
- TVS DIODE 3.3VWM 12.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:26,660
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Product details
Overview
GSOT03C-G3-08 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, 3.3 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 low-voltage data lines such as USB 2.0, HDMI DDC, or I²C buses in automotive infotainment and industrial HMI interfaces.
For engineers reviewing the GSOT03C-G3-08 datasheet, GSOT03C-G3-08 pinout, GSOT03C-G3-08 application, or GSOT03C-G3-08 equivalent, key selection criteria include its BiAs-mode clamping behavior, 5.7 V typical reverse clamping at 1 A, 420 pF capacitance at 0 V, SOT-23 footprint compatibility, and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
The GSOT03C-G3-08 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pin 3 is grounded while pins 1 and 2 protect two independent signal lines, each with distinct forward (1.0 V VF typ.) and reverse (4.6 V VBR typ.) clamping thresholds. This enables low-voltage rail-to-rail transient suppression without forward-bias leakage into logic rails.
It supports dual-path surge handling-each pin-to-ground path handles 30 A (8/20 μs), delivering 369 W peak pulse power-and allows parallel use of both internal diodes for single-line applications requiring doubled IPPM and halved effective series inductance, though at double capacitance (840 pF).
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 interfaces. |
| Reverse stand-off voltage | 3.3 V VRWM - compatible with 3.3 V logic systems without DC loading or false triggering during normal operation. |
| Peak pulse current | 30 A per line-to-ground path (IEC 61000-4-5, 8/20 μs) - sustains high-energy surges common in industrial and automotive environments. |
| Clamping voltage | 5.7 V typ. at 1 A reverse current - limits transient overvoltage to safe levels for 3.3 V I/O buffers and PHY transceivers. |
| Capacitance | 420 pF typ. at 0 V, 1 MHz - optimized for low-speed to medium-speed data lines; higher than TVS arrays but acceptable for I²C, SMBus, or UART. |
| Operating temperature | −55 °C to +150 °C - qualified for under-hood automotive and extended industrial temperature deployments. |
| AEC-Q101 qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
SOT-23 package (JEDEC TO-236AB), 3-pin surface-mount, 2.8 mm × 2.35 mm × 1.15 mm body, e3 Sn plating, MSL level 1, 260 °C max reflow peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 anode/cathode | Connects to first protected signal line (e.g., I²C SDA); forms one half of BiAs protection pair with Pin 3. |
| Pin 2 | Line 2 anode/cathode | Connects to second protected signal line (e.g., I²C SCL); forms second half of BiAs protection pair with Pin 3. |
| Pin 3 | Ground reference | Mandatory ground connection for BiAs mode; must be low-inductance path to system GND for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional asymmetrical (BiAs) clamping | Enables simultaneous protection of two independent 3.3 V data lines with separate forward (1.0 V) and reverse (4.6 V) breakdown paths to ground. |
| Parallel dual-diode configuration | Allows pins 1–2 (no Pin 3 connection) to deliver symmetrical 1-line protection with doubled IPPM (60 A) and halved effective series inductance. |
| Low forward voltage clamping | 1.0 V typical VF at 1 A ensures negative transients clamp near ground, preserving logic low integrity on bidirectional buses. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, ADAS sensor interfaces, and infotainment backplanes. |
| e3 matte tin termination | RoHS-compliant, lead-free, solderable with standard reflow profiles; eliminates whisker risk in long-life deployments. |
Applications
| USB 2.0 Data Lines | I²C Bus Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD events during hot-plug insertion in industrial docking stations. IC Role / Device Role / Timing Role: Two-line ESD suppressor placed immediately before USB connector, operating in BiAs mode with Pin 3 grounded. Use Value: Limits clamping voltage to ≤12.3 V at 30 A surge, preventing damage to USB transceiver ICs while maintaining signal integrity via 420 pF line capacitance. | Use Scenario: Safeguarding SDA and SCL lines of automotive body control module I²C sensors against board-level ESD coupling. IC Role / Device Role / Timing Role: Dual-channel transient voltage suppressor deployed at microcontroller I/O pins, leveraging BiAs architecture for rail-to-rail clamping. Use Value: With 3.3 V VRWM and −55 °C to +150 °C operation, ensures reliable protection across vehicle thermal cycles without leakage or false triggering. |
| HDMI DDC Channel | Automotive LIN Bus |
Use Scenario: Shielding Display Data Channel (DDC) lines (SCL/SDA) in automotive head-up displays from ESD during service port access. IC Role / Device Role / Timing Role: Bidirectional ESD clamp installed between HDMI source and sink, using Pin 1/Pin 2 for DDC lines and Pin 3 to chassis ground. Use Value: ±30 kV IEC 61000-4-2 rating meets ISO 10605 automotive ESD requirements; 260 pF capacitance at 1.6 V VR preserves DDC timing margins. | Use Scenario: Transient suppression on LIN bus master node in powertrain control units exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Single-line BiSy-mode protector (Pin 1 to LIN, Pin 2 to GND, Pin 3 open) for unidirectional fault current diversion. Use Value: 14 V clamping at 30 A IPPM prevents LIN transceiver latch-up; AEC-Q101 qualification ensures compliance with automotive reliability standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT03C-G3-08 | Successor device with identical SOT-23 footprint, same 3.3 V VRWM and ±30 kV ESD rating, but improved thermal resistance and extended lifecycle beyond January 2025. | Drop-in replacement for new designs; not recommended for legacy BOMs requiring exact form-fit-function continuity with GSOT03C-G3-08. | Select when designing for production beyond Q1 2025 or requiring enhanced power derating margin. |
| SMF3.3A-T | Single-line 3.3 V TVS diode in SOD-123, 15.5 V clamping at 1 A, 100 pF capacitance - lower capacitance but no dual-line integration. | Requires two devices for dual-line protection; lacks BiAs functionality and AEC-Q101 qualification. | Choose only if ultra-low capacitance (<150 pF) is mandatory and discrete layout area is available. |
Compared with VGSOT03C-G3-08, the original GSOT03C-G3-08 offers identical electrical performance but reaches end-of-life in January 2025; compared with SMF3.3A-T, it integrates dual-line protection and automotive qualification in one SOT-23 package, reducing PCB area and qualification overhead.
Availability
GSOT03C-G3-08 is available at Aetrix Electronics and suitable for automotive infotainment, industrial HMI, and USB peripheral interfaces requiring stable component supply through end-of-life in January 2025.
Supply support for GSOT03C-G3-08 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 diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The GSOTxxC family was engineered specifically for compact, high-density ESD protection of multi-line digital interfaces in space-constrained automotive and industrial PCBs, emphasizing AEC-Q101 compliance and BiAs/BiSy operational flexibility.
FAQ
What is the maximum reverse working voltage (VRWM) of the GSOT03C-G3-08?
The GSOT03C-G3-08 has a maximum reverse working voltage (VRWM) of 3.3 V, meaning it remains non-conductive under normal 3.3 V system operation while providing full ESD protection. This value is confirmed in the "ELECTRICAL CHARACTERISTICS GSOT03C" table on page 5 of Vishay document 85824, where VRWM is specified as 3.3 V for pin 1–3 or pin 2–3 configurations.
How does the GSOT03C-G3-08 handle bidirectional ESD events?
The GSOT03C-G3-08 uses BiAs-MODE (Bidirectional Asymmetrical) protection: positive transients on either pin 1 or pin 2 are clamped by reverse conduction to pin 3 (ground), while negative transients are clamped by forward conduction with ~1.0 V VF. This dual-threshold behavior is intrinsic to its monolithic dual-diode structure and is documented in the "BiAs-MODE" section on page 5 of Vishay document 85824.
Can the GSOT03C-G3-08 be used for single-line protection?
Yes - the GSOT03C-G3-08 supports BiSy-MODE (Bidirectional Symmetrical) operation when pin 3 is left unconnected and pins 1 and 2 are used as line and ground (or vice versa). In this configuration, it delivers symmetrical clamping with 3.8 V VRWM and 14 V clamping at 30 A, as detailed in the "ELECTRICAL CHARACTERISTICS GSOT03C" table on page 8 of Vishay document 85824.
Is the GSOT03C-G3-08 qualified for automotive applications?
Yes, the GSOT03C-G3-08 is AEC-Q101 qualified, as explicitly stated in the "FEATURES" section on page 1 of Vishay document 85824. This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), validating its suitability for under-hood and cabin automotive electronics.
What is the capacitance of the GSOT03C-G3-08 at 0 V bias?
The GSOT03C-G3-08 exhibits 420 pF typical capacitance at 0 V reverse bias and 1 MHz, as specified in the "ELECTRICAL CHARACTERISTICS GSOT03C" table (page 5, CD parameter). This value applies to each pin 1–3 and pin 2–3 path and is critical for assessing signal integrity impact on data lines like I²C or USB 2.0.
GSOT03C-G3-08 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):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 4V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 30A (8/20µs)
- Power - Peak Pulse:
- 369W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 420pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT03C-G3-08 FAQ
1.How can I place an order for GSOT03C-G3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT03C-G3-08 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 GSOT03C-G3-08 reliable?
The price and inventory of GSOT03C-G3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT03C-G3-08 is usually 5 days.
3.What payment methods are accepted for GSOT03C-G3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT03C-G3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT03C-G3-08?
GSOT03C-G3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT03C-G3-08 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 GSOT03C-G3-08?
For technical support, including GSOT03C-G3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT03C-G3-08 requirements.
6.How does Aetrix verify that GSOT03C-G3-08 is sourced from the original manufacturer or authorized distributors?
All GSOT03C-G3-08 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 GSOT03C-G3-08 meets industry standards.
7.What is the process for return or replacement of GSOT03C-G3-08?
All GSOT03C-G3-08 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT03C-G3-08, 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 GSOT03C-G3-08 part is unused and in its original packaging.
Return procedure for GSOT03C-G3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT03C-G3-08 Tags
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