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Vishay General Semiconductor - Diodes Division GSOT04C-HG3-18
- Part No.:
- GSOT04C-HG3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT04C-HG3-18.pdf
- Description:
- TVS DIODE 4VWM 14.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,393
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Product details
Overview
GSOT04C-HG3-18 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, 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-HG3-18 datasheet, GSOT04C-HG3-18 pinout, GSOT04C-HG3-18 application, or GSOT04C-HG3-18 equivalent, key selection criteria include clamping voltage at 30 A (11.2–14.3 V), low 310–450 pF capacitance at 0 V bias, AEC-Q101 qualification status, and BiAs-mode dual-line protection architecture.
Technical Context
The GSOT04C-HG3-18 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-biased diodes) with distinct VC levels. Its asymmetry delivers lower forward clamping (~4.5 V at 30 A) versus reverse clamping (~11.2–14.3 V).
It supports dual operational configurations - two-line protection (pin 3 grounded) or single-line symmetrical protection (pin 3 unconnected, pins 1–2 used as line–ground pair) - with verified performance across -55 °C to +150 °C junction temperature range and MSL Level 1 soldering compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±30 kV contact & air discharge (IEC 61000-4-2); meets automotive-grade ESD immunity requirements without external shielding. |
| Reverse Stand-off Voltage | 4 V VRWM - blocks normal 3.3 V logic signals while triggering only during overvoltage events. |
| Peak Pulse Current | 30 A per line-to-ground path (IEC 61000-4-5, 8/20 μs) - handles high-energy surges in industrial I/O and automotive body electronics. |
| Clamping Voltage | 11.2–14.3 V at 30 A IPP - limits voltage seen by downstream PHY ICs during surge, preserving signal integrity. |
| Capacitance | 310–450 pF at 0 V, 200 pF at 2 V - optimized for <15 Mbps data rates (e.g., UART, CAN FD physical layer) without signal distortion. |
| Operating Temp | -55 °C to +150 °C TJ - qualified for under-hood automotive, motor control, and harsh-environment industrial use. |
| AEC-Q101 | Qualified - validated for automotive applications requiring reliability beyond standard commercial grade. |
Pinout & Package
SOT-23 package (JEDEC TO-236), 3-pin, 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 | Line 1 Anode/Cathode | Connects to first protected signal line (e.g., USB D+); forms one half of BiAs dual-diode structure. |
| Pin 2 | Line 2 Anode/Cathode | Connects to second protected signal line (e.g., USB D−); symmetrically matched to Pin 1 for balanced protection. |
| Pin 3 | Ground Reference | Must be connected to system ground to enable two-line BiAs operation; floating disables dual-line mode. |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-MODE Dual-Line Protection | Simultaneously safeguards two independent data lines (e.g., differential pairs) with shared ground return, reducing component count vs. discrete diodes. |
| Low Clamping Asymmetry | Forward clamping ≤4.5 V at 30 A enables robust negative transient suppression near ground potential, critical for CMOS input protection. |
| AEC-Q101 Qualified | Validated for automotive applications including infotainment, ADAS sensor interfaces, and body control modules requiring extended lifetime reliability. |
| Space-Saving SOT-23 | Replaces larger SO-8 or SC-70 solutions while maintaining 30 A surge capability - ideal for compact PCB layouts in portable and embedded systems. |
| e3 Matte Tin Plating | Lead-free, RoHS-compliant termination ensures solderability and long-term intermetallic stability in high-volume manufacturing. |
Applications
| USB 2.0 Interface Protection | HDMI Hot-Plug Detection |
|---|---|
Use Scenario: Protecting D+ and D− lines against ESD events during cable insertion/removal in portable media devices and docking stations. IC Role / Device Role / Timing Role: Primary front-end ESD clamp placed directly at connector, before USB transceiver IC. Use Value: Prevents latch-up or gate oxide damage in USB PHY ICs by limiting transient voltage to ≤14.3 V at 30 A, preserving data link reliability. | Use Scenario: Safeguarding HDMI CEC and HPD lines against user-induced ESD in consumer AV equipment and set-top boxes. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on 5 V-tolerant control lines operating at <1 MHz. Use Value: Maintains HPD signal integrity with 200 pF capacitance at 2 V bias, avoiding false hot-plug detection or CEC command corruption. |
| Automotive Sensor I/O | Industrial RS-485 Transceiver Port |
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control units and battery management systems. IC Role / Device Role / Timing Role: Secondary overvoltage clamp on low-speed signal paths exposed to harness-induced transients. Use Value: Withstands -55 °C to +150 °C operation and AEC-Q101 stress testing, ensuring functional safety compliance in ASIL-B systems. | Use Scenario: Shielding RS-485 driver/receiver terminals from ESD and lightning-induced surges in factory automation and building control networks. IC Role / Device Role / Timing Role: Line-side transient absorber placed between connector and transceiver, rated for 30 A surge per line. Use Value: Delivers 429 W peak pulse power (line-to-ground) and 564 W (line-to-line), exceeding IEC 61000-4-5 Level 4 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT04C-HG3-18 | Successor series with identical pinout, same VRWM (4 V), but improved 10% lower clamping voltage (10.5–13.5 V at 30 A) and 15% lower capacitance (265–385 pF). | Drop-in replacement for new designs; requires no layout change but offers tighter parametric control and extended product lifecycle beyond Jan 2025 EOL. | Select for long-term production continuity and margin improvement in high-reliability applications. |
| TPD2E001DRYR | Single-channel, 2-pin SOT-5X3; 5.5 V VRWM, 12 V VC at 1 A, 12 pF typical capacitance - lower clamping but no dual-line integration. | Requires two devices for dual-line protection; suited for high-speed interfaces (>480 Mbps) where ultra-low capacitance is mandatory. | Choose when minimizing signal loading dominates over board space or BOM count. |
Compared with VGSOT04C-HG3-18, the original GSOT04C-HG3-18 offers proven field reliability and full AEC-Q101 documentation, while TPD2E001DRYR provides superior high-frequency performance at the cost of increased component count and reduced surge handling per channel.
Availability
GSOT04C-HG3-18 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-HG3-18 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 robust, space-constrained ESD protection of high-speed and mixed-signal data lines in automotive and industrial environments, emphasizing AEC-Q101 qualification and BiAs-mode dual-line efficiency.
FAQ
What is the maximum operating temperature for GSOT04C-HG3-18?
The GSOT04C-HG3-18 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 protocols and applies to continuous operation under rated electrical conditions.
Does GSOT04C-HG3-18 support both bidirectional asymmetrical and symmetrical protection modes?
Yes, GSOT04C-HG3-18 supports two distinct configurations: BiAs-MODE (pins 1 & 2 to signal lines, pin 3 grounded) for dual-line asymmetrical clamping, and BiSy-MODE (pin 3 unconnected, pins 1–2 used as line–ground pair) for single-line symmetrical protection. Both modes are fully characterized in the official Vishay datasheet Rev. 3.0.
What is the clamping voltage of GSOT04C-HG3-18 at 30 A peak pulse current?
The reverse clamping voltage (VC) of GSOT04C-HG3-18 is specified as 11.2 V typical and 14.3 V maximum at 30 A IPPM (IEC 61000-4-5, 8/20 μs waveform). This value is measured between pin 1 (or 2) and pin 3, and defines the maximum voltage imposed on protected circuitry during worst-case surge events.
Is GSOT04C-HG3-18 RoHS-compliant and lead-free?
Yes, GSOT04C-HG3-18 carries the "HG" environmental code indicating RoHS-compliant, lead-free construction with matte tin (e3) termination. It meets JEDEC J-STD-020 moisture sensitivity Level 1 and supports standard Pb-free reflow profiles with peak temperature up to 260 °C.
What is the capacitance of GSOT04C-HG3-18 at 2 V reverse bias?
The capacitance of GSOT04C-HG3-18 is 200 pF maximum at 2 V reverse bias and 1 MHz frequency, as specified in the Electrical Characteristics table for the pin 1–3 or pin 2–3 path. This low bias-dependent capacitance ensures minimal signal degradation on data lines operating up to 15 Mbps.
GSOT04C-HG3-18 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):
- 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-HG3-18 FAQ
1.How can I place an order for GSOT04C-HG3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT04C-HG3-18 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 GSOT04C-HG3-18 reliable?
The price and inventory of GSOT04C-HG3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT04C-HG3-18 is usually 5 days.
3.What payment methods are accepted for GSOT04C-HG3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT04C-HG3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT04C-HG3-18?
GSOT04C-HG3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT04C-HG3-18 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 GSOT04C-HG3-18?
For technical support, including GSOT04C-HG3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT04C-HG3-18 requirements.
6.How does Aetrix verify that GSOT04C-HG3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT04C-HG3-18 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 GSOT04C-HG3-18 meets industry standards.
7.What is the process for return or replacement of GSOT04C-HG3-18?
All GSOT04C-HG3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT04C-HG3-18, 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 GSOT04C-HG3-18 part is unused and in its original packaging.
Return procedure for GSOT04C-HG3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT04C-HG3-18 Tags
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