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Vishay General Semiconductor - Diodes Division GSOT03C-G3-18
- Part No.:
- GSOT03C-G3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT03C-G3-18.pdf
- Description:
- TVS DIODE 3.3VWM 12.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,100
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Product details
Overview
GSOT03C-G3-18 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 path. It protects high-speed data lines such as USB 2.0 or HDMI interfaces against transient overvoltage events.
For engineers reviewing the GSOT03C-G3-18 datasheet, GSOT03C-G3-18 pinout, GSOT03C-G3-18 application, or GSOT03C-G3-18 equivalent, key selection factors include its BiAs-mode clamping behavior, low 5.7 V typical reverse clamping voltage at 1 A, 420 pF capacitance at 0 V bias, SOT-23 footprint compatibility, and AEC-Q101 qualification status.
Technical Context
The GSOT03C-G3-18 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pins 1 and 2 connect to protected signal lines, pin 3 to ground, enabling independent clamping of each line with distinct forward/reverse thresholds. Its dual-diode structure provides high isolation (>3.3 V VRWM) and fast response to ESD transients.
When configured in BiSy-MODE (pin 1 to signal, pin 2 to ground, pin 3 open), it functions as a single-line symmetrical protector with 3.8 V VRWM and 7.0 V typical clamping at 1 A. Both modes leverage the same silicon die but differ in terminal usage and clamping symmetry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD immunity | ±30 kV contact & air discharge per IEC 61000-4-2 - meets highest industrial and automotive ESD robustness requirements. |
| Reverse stand-off voltage (VRWM) | 3.3 V - ensures no leakage or interference on 3.3 V logic/data lines during normal operation. |
| Peak pulse current (IPPM) | 30 A per path (IEC 61000-4-5, 8/20 μs) - handles severe surge events without failure. |
| Reverse clamping voltage (VC) | 5.7 V typ. at 1 A; 10 V max. at 30 A - limits voltage stress on downstream ICs during ESD strikes. |
| Capacitance (CD) | 420 pF max. at 0 V, 1 MHz - optimized for USB 2.0 and other <480 Mbps interfaces with minimal signal distortion. |
| Operating temperature | −55 °C to +150 °C - supports under-hood automotive and industrial environments. |
| AEC-Q101 qualified | Yes - validated for automotive electronics reliability per stress test requirements. |
Pinout & Package
SOT-23 package (JEDEC TO-236AB), 3-pin, e3 Sn-plated terminals, MSL level 1, 8.8 mg weight, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 anode / cathode | Connects to first protected signal line (e.g., USB D+); forms one leg of BiAs protection path to ground (pin 3). |
| Pin 2 | Line 2 anode / cathode | Connects to second protected signal line (e.g., USB D−); forms second leg of BiAs protection path to ground (pin 3). |
| Pin 3 | Ground reference | Must be connected to system ground plane; serves as common return for both protection paths in BiAs mode. |
Key Features
| Feature | Design Value |
|---|---|
| Two-line ESD protection | Single SOT-23 device protects two independent data lines simultaneously - reduces BOM count and PCB area vs. discrete diodes. |
| BiAs-MODE clamping | Asymmetrical forward (1.0 V VF) and reverse (4.6 V VBR typ.) conduction enables precise clamping near rail voltages for 3.3 V systems. |
| Low clamping voltage | 10 V max. reverse clamping at full 30 A surge - maintains safe voltage margin below 12 V I/O absolute maximum ratings. |
| High surge power rating | 369 W peak pulse power (pin 1–3 or 2–3) - exceeds IEC 61000-4-5 Level 4 requirements. |
| Automotive-grade reliability | AEC-Q101 qualified and green RoHS-compliant - suitable for infotainment, ADAS, and body control modules. |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting differential USB 2.0 D+ and D− lines from ESD events during hot-plug or handling. IC Role / Device Role / Timing Role: Two-line transient voltage suppressor placed immediately before USB connector, operating in BiAs mode. Use Value: Prevents latch-up or damage to USB transceivers by clamping transients to ≤10 V while maintaining 420 pF capacitance compatible with 480 Mbps signaling. |
Use Scenario: Safeguarding HDMI TMDS data channels against electrostatic discharge in consumer AV equipment. IC Role / Device Role / Timing Role: Dual-line ESD clamp on each TMDS pair (e.g., DATA0+/−), grounded via pin 3. Use Value: Ensures signal integrity with low 260 pF capacitance at 1.6 V bias and sub-12 V clamping at surge currents up to 30 A. |
| Automotive Infotainment Port | Industrial RS-485 Transceiver Interface |
Use Scenario: ESD hardening of USB-C or micro-USB ports in automotive head units exposed to harsh cabin environments. IC Role / Device Role / Timing Role: AEC-Q101-qualified BiAs protector mounted at connector entry point. Use Value: Guarantees operation from −40 °C to +125 °C junction temperature and withstands repeated ±30 kV discharges per ISO 10605. |
Use Scenario: Protecting half-duplex RS-485 bus lines (A/B) in factory automation controllers. IC Role / Device Role / Timing Role: Two-line TVS array referenced to local ground, leveraging BiAs mode for rail-to-rail clamping. Use Value: Limits induced surges to <12 V during lightning-induced transients while adding only 420 pF loading to differential impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT03C-G3-18 | Successor series with identical SOT-23 footprint, same 3.3 V VRWM and ±30 kV ESD rating; improved thermal performance and extended lifecycle beyond Jan 2025. | Drop-in replacement for new designs; requires no layout change but offers longer supply assurance. | Select for long-term production programs where GSOT03C-G3-18 end-of-life (Jan 2025) is a concern. |
| SMF3.3A-T | Single-line 3.3 V TVS diode (SOD-123), 30 A IPPM, 12.3 V VC at 30 A - higher clamping voltage and no dual-line integration. | Requires two devices for two-line protection; increases board space and parasitic inductance. | Use only when dual-line integration is unnecessary or when legacy SOD-123 layout constraints apply. |
Compared with VGSOT03C-G3-18, the original GSOT03C-G3-18 offers identical electrical specs but shorter lifecycle visibility; versus SMF3.3A-T, it delivers integrated dual-line protection with lower clamping voltage and reduced PCB area - critical for compact USB and HDMI layouts.
Availability
GSOT03C-G3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment port hardening, and industrial RS-485 transceiver interface applications requiring stable component supply through January 2025.
Supply support for GSOT03C-G3-18 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 designed specifically for high-density, low-capacitance ESD protection of high-speed serial interfaces - balancing robust surge handling with signal integrity preservation in space-constrained applications.
FAQ
What is the maximum reverse working voltage (VRWM) of the GSOT03C-G3-18?
The GSOT03C-G3-18 has a maximum reverse working voltage (VRWM) of 3.3 V when used in two-line BiAs-MODE (pins 1–3 and 2–3). This ensures reliable operation on standard 3.3 V logic and data buses without leakage or false triggering during normal signal swings.
Can the GSOT03C-G3-18 protect both positive and negative ESD transients?
Yes, the GSOT03C-G3-18 provides bidirectional protection: positive transients above 4.6 V (VBR typ.) clamp to ground via reverse conduction, while negative transients below 0 V clamp near ground via forward conduction (VF ≈ 1.0 V). This BiAs-MODE behavior ensures full-spectrum ESD immunity.
What is the clamping voltage of the GSOT03C-G3-18 at 30 A surge current?
At 30 A peak pulse current (IPPM), the GSOT03C-G3-18 exhibits a maximum reverse clamping voltage (VC) of 12.3 V between either pin 1–3 or pin 2–3. This value is measured per IEC 61000-4-5 (8/20 μs waveform) and defines the upper voltage limit imposed on protected circuitry during worst-case surges.
Is the GSOT03C-G3-18 suitable for automotive applications?
Yes, the GSOT03C-G3-18 is AEC-Q101 qualified and rated for operation from −55 °C to +150 °C junction temperature. Its ±30 kV ESD immunity and robust surge capability make it appropriate for automotive infotainment, telematics, and body electronics where reliability under harsh conditions is mandatory.
How does the GSOT03C-G3-18 differ from the GSOT05C-G3-18 in terms of voltage rating?
The GSOT03C-G3-18 is rated for 3.3 V VRWM and 4.6 V typical breakdown (VBR), whereas the GSOT05C-G3-18 has a 5.0 V VRWM and 6.8 V typical VBR. This makes the GSOT03C-G3-18 optimal for 3.3 V systems, while GSOT05C-G3-18 targets 5 V logic or mixed-voltage interfaces where higher standoff is required.
GSOT03C-G3-18 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-G3-18 FAQ
1.How can I place an order for GSOT03C-G3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT03C-G3-18 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-G3-18 reliable?
The price and inventory of GSOT03C-G3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT03C-G3-18 is usually 5 days.
3.What payment methods are accepted for GSOT03C-G3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT03C-G3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT03C-G3-18?
GSOT03C-G3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT03C-G3-18 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-G3-18?
For technical support, including GSOT03C-G3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT03C-G3-18 requirements.
6.How does Aetrix verify that GSOT03C-G3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT03C-G3-18 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-G3-18 meets industry standards.
7.What is the process for return or replacement of GSOT03C-G3-18?
All GSOT03C-G3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT03C-G3-18, 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-G3-18 part is unused and in its original packaging.
Return procedure for GSOT03C-G3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT03C-G3-18 Tags
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