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Vishay General Semiconductor - Diodes Division GSOT05C-G3-18
- Part No.:
- GSOT05C-G3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT05C-G3-18.pdf
- Description:
- TVS DIODE 5VWM 16VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,465
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Product details
Overview
GSOT05C-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, 5 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 GSOT05C-G3-18 datasheet, GSOT05C-G3-18 pinout, GSOT05C-G3-18 application, or GSOT05C-G3-18 equivalent, key selection criteria include its 260–350 pF capacitance at 0 V bias, 12–16 V clamping voltage at 30 A, 10 μA max reverse leakage at 5 V, BiAs-mode dual-line operation, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The GSOT05C-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 positive transients (via reverse-biased diodes) and negative transients (via forward conduction). Its architecture delivers 12 V clamping at 30 A for line-to-ground paths and 17 V at 30 A for line-to-line configuration.
It supports dual operational modes - two-line asymmetrical (BiAs) with pin 3 grounded, or single-line symmetrical (BiSy) with pin 3 floating - allowing flexible integration into both differential data buses and single-ended control lines without redesigning PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±30 kV contact & air discharge per IEC 61000-4-2 - meets highest system-level ESD immunity requirements for consumer and automotive ports. |
| VRWM | 5 V - compatible with 3.3 V and 5 V logic systems without signal distortion during normal operation. |
| IPPM (line-to-GND) | 30 A - handles severe lightning-induced surges per IEC 61000-4-5 (8/20 μs waveform) on each protected line. |
| VC @ IPPM | 12–16 V - low clamping ensures downstream ICs (e.g., USB PHYs) remain within absolute maximum ratings during surge events. |
| Capacitance @ 0 V | 260–350 pF - optimized for high-speed interfaces up to ~100 Mbps; lower than GSOT03C/GSOT04C variants. |
| IR @ VRWM | ≤10 μA - minimal DC loading on sensitive analog or low-power digital lines. |
| Package | SOT-23 - industry-standard 3-pin footprint enabling drop-in replacement and automated assembly compatibility. |
Pinout & Package
SOT-23 package: 3-pin surface-mount device with standard lead pitch (0.95 mm), body dimensions 2.8 × 2.35 × 1.15 mm, MSL Level 1, RoHS-compliant matte tin (e3) plating, and 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 half of BiAs protection pair with Pin 3. |
| Pin 2 | Line 2 Anode / Cathode | Connects to second protected signal line (e.g., USB D−); forms second half of BiAs pair with Pin 3. |
| Pin 3 | Ground Reference | Must be connected to system ground to enable line-to-ground clamping; floating in BiSy mode. |
Key Features
| Feature | Design Value |
|---|---|
| Two-line ESD protection | Simultaneously safeguards two independent data/signal lines with shared ground reference, reducing component count vs. discrete diodes. |
| BiAs-MODE architecture | Delivers asymmetric clamping: low forward VF (~4.5 V at 30 A) for negative transients, higher reverse VC (~12–16 V) for positive transients - ideal for unidirectional bias systems. |
| AEC-Q101 qualified | Validated for automotive applications including infotainment interfaces and body electronics, supporting -55 °C to +150 °C junction temperature range. |
| Low capacitance variation | Capacitance drops from 350 pF @ 0 V to 150 pF @ 2.5 V reverse bias - maintains signal integrity across operating voltage swing. |
| e3 Sn plating | Lead-free matte tin termination ensures solderability and long-term intermetallic stability under thermal cycling. |
Applications
| USB 2.0 Interface Protection | HDMI Hot-Plug Detection Line |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD events during cable insertion/removal in laptops and peripherals. IC Role / Device Role / Timing Role: Primary front-end ESD clamp placed immediately after connector, before USB transceiver IC. Use Value: Prevents latch-up or gate oxide damage in USB PHYs by limiting transient voltage to ≤16 V while maintaining 480 Mbps signal fidelity via 260–350 pF capacitance. | Use Scenario: Safeguarding HDMI HPD (Hot-Plug Detect) line against user-induced ESD when connecting/disconnecting displays. IC Role / Device Role / Timing Role: Standalone ESD suppressor on 5 V-tolerant HPD signal, operating in BiSy mode with Pin 3 unconnected. Use Value: Enables reliable plug detection by holding leakage <10 μA at 5 V and clamping surges to ≤17 V at 30 A, avoiding false disconnect signals. |
| Automotive Sensor I/O | Industrial RS-485 Transceiver Port |
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., temperature, pressure) in automotive ECUs exposed to harsh ESD environments. IC Role / Device Role / Timing Role: Secondary protection stage after common-mode choke, configured in BiAs mode with chassis ground connection at Pin 3. Use Value: Guarantees AEC-Q101 compliance and 150 °C operation, suppressing ±30 kV discharges without degrading 20 kHz sensor bandwidth. | Use Scenario: Shielding RS-485 driver/receiver terminals (A/B lines) in factory automation controllers from field-installed cable ESD. IC Role / Device Role / Timing Role: Dual-line protector wired between transceiver and connector, using BiAs mode to clamp both polarities relative to local ground. Use Value: Maintains differential signal integrity with matched 260–350 pF capacitance per line and limits common-mode surge voltage to <16 V at full 30 A rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT05C-G3-18 | Successor series with identical SOT-23 footprint, same VRWM (5 V), but improved 100 ps response time and 20 % lower clamping voltage at 30 A. | Drop-in replacement for new designs; requires validation for legacy board rework due to minor capacitance shift (240–330 pF). | Select for next-generation automotive or high-reliability industrial designs where extended product lifecycle beyond January 2025 is required. |
| GSOT05C-E3-18 | Same electrical specs and package, but standard (non-green) environmental status and 3 k/reel packaging instead of 10 k/reel. | No functional difference; used in cost-sensitive non-automotive applications where green compliance is not mandated. | Choose when RoHS exemption applies or for prototyping with smaller reel quantities. |
Compared with GSOT05C-G3-18, VGSOT05C-G3-18 offers enhanced surge robustness and longer availability, while GSOT05C-E3-18 provides identical protection performance with alternate packaging and environmental compliance - enabling supply continuity and cost optimization across design generations.
Availability
GSOT05C-G3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor I/O hardening, and industrial RS-485 port safeguarding requiring stable component supply through end-of-life in January 2025.
Supply support for GSOT05C-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 developed specifically for compact, high-performance ESD protection of high-speed data lines in space-constrained applications, emphasizing low capacitance, AEC-Q101 qualification, and standardized SOT-23 integration.
FAQ
What is the maximum operating temperature for GSOT05C-G3-18?
The GSOT05C-G3-18 has a specified junction temperature range of -55 °C to +150 °C, making it suitable for under-hood automotive applications and industrial environments with elevated ambient temperatures. This rating is validated per AEC-Q101 stress testing and applies across its full electrical specification range.
Can GSOT05C-G3-18 be used in BiSy mode for single-line protection?
Yes, GSOT05C-G3-18 supports BiSy-MODE: configure Pin 1 to the signal line, Pin 2 to ground (or vice versa), and leave Pin 3 unconnected. In this configuration, it provides symmetrical ±17 V clamping at 30 A for single-ended lines like HDMI HPD or GPIOs, with 130–175 pF capacitance at 0 V bias.
What is the clamping voltage of GSOT05C-G3-18 at 1 A and 30 A surge currents?
Per the GSOT05C electrical characteristics table, GSOT05C-G3-18 exhibits a reverse clamping voltage (VC) of 7–8.7 V at 1 A and 12–16 V at 30 A for line-to-ground protection. These values are measured per IEC 61000-4-5 8/20 μs waveform and define the maximum voltage imposed on protected circuitry during surge events.
Is GSOT05C-G3-18 RoHS-compliant and lead-free?
Yes, GSOT05C-G3-18 is RoHS-compliant and features e3 matte tin (Sn) plating per JEDEC J-STD-609, with no lead content. The "G3" suffix explicitly denotes green (halogen-free, lead-free) environmental compliance, verified by Vishay's material declarations and third-party test reports.
How does the capacitance of GSOT05C-G3-18 vary with applied reverse voltage?
GSOT05C-G3-18 capacitance decreases with increasing reverse bias: 260–350 pF at 0 V, dropping to 150 pF at 2.5 V reverse voltage (measured at 1 MHz). This voltage-dependent behavior minimizes signal distortion in biased data lines and supports clean eye diagrams in USB 2.0 applications.
GSOT05C-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):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 16V
- Current - Peak Pulse (10/1000µs):
- 30A (8/20µs)
- Power - Peak Pulse:
- 480W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 260pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT05C-G3-18 FAQ
1.How can I place an order for GSOT05C-G3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT05C-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 GSOT05C-G3-18 reliable?
The price and inventory of GSOT05C-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 GSOT05C-G3-18 is usually 5 days.
3.What payment methods are accepted for GSOT05C-G3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT05C-G3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT05C-G3-18?
GSOT05C-G3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT05C-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 GSOT05C-G3-18?
For technical support, including GSOT05C-G3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT05C-G3-18 requirements.
6.How does Aetrix verify that GSOT05C-G3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT05C-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 GSOT05C-G3-18 meets industry standards.
7.What is the process for return or replacement of GSOT05C-G3-18?
All GSOT05C-G3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT05C-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 GSOT05C-G3-18 part is unused and in its original packaging.
Return procedure for GSOT05C-G3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT05C-G3-18 Tags
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