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Vishay General Semiconductor - Diodes Division GSOT04C-E3-18
- Part No.:
- GSOT04C-E3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT04C-E3-18.pdf
- Description:
- TVS DIODE 4VWM 14.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
GSOT04C-E3-18 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-E3-18 datasheet, GSOT04C-E3-18 pinout, GSOT04C-E3-18 application, or GSOT04C-E3-18 equivalent, key selection criteria include its BiAs-mode clamping behavior, 429 W peak pulse power (pin 1–3), low 310 pF typical capacitance at 0 V, and AEC-Q101 qualification for automotive infotainment and ADAS subsystems.
Technical Context
The GSOT04C-E3-18 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pin 3 is grounded, pins 1 and 2 protect separate signal lines, with distinct forward (VF ≈ 1.0–1.2 V) and reverse (VBR = 5.0–7.0 V) clamping thresholds. This enables low-voltage negative transient suppression near ground while maintaining robust positive overvoltage handling.
It supports dual configuration modes - two-line BiAs (pins 1/2 → protected lines, pin 3 → GND) or single-line BiSy (pins 1–2 only, pin 3 floating), delivering symmetrical clamping (VRWM = 4.5 V, VBR = 5.5–7.7 V) when used for high-reliability CAN or RS-485 bus protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD immunity | ±30 kV contact/air discharge per IEC 61000-4-2 - meets Level 4 system-level ESD requirements without additional board-level shielding. |
| Reverse stand-off voltage (VRWM) | 4 V - compatible with 3.3 V logic systems, ensuring no leakage or false triggering during normal operation. |
| Peak pulse current (IPPM) | 30 A per line-to-ground path (IEC 61000-4-5, 8/20 μs) - sustains high-energy surges common in industrial Ethernet and automotive data buses. |
| Clamping voltage (VC) | 11.2 V max at 30 A (pin 1–3) - limits transient voltage to safe levels for downstream 12 V-tolerant transceivers and PHY ICs. |
| Capacitance (CD) | 310 pF typical at 0 V, 1 MHz - optimized for USB 2.0 (480 Mbps) signal integrity with <0.5 dB insertion loss up to 100 MHz. |
| Operating temperature | −55 °C to +150 °C - qualified for under-hood automotive and industrial control environments per AEC-Q101. |
| Package | SOT-23 (JEDEC TO-236AB) - surface-mount footprint compatible with standard reflow profiles (peak 260 °C, MSL level 1). |
Pinout & Package
SOT-23 package: 3-pin, gull-wing lead frame, e3 matte tin plating, 8.8 mg weight, UL 94 V-0 molding compound, MSL level 1 per J-STD-020.
| 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 protection pair with Pin 3. |
| Pin 3 | Ground reference terminal | Mandatory connection to system ground; enables low-impedance surge shunt path for both protected lines in BiAs mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional asymmetrical (BiAs) clamping | Enables sub-1.2 V negative clamping (forward VF) and 11.2 V positive clamping (reverse VC) on same device - preserves signal swing headroom in 3.3 V differential interfaces. |
| AEC-Q101 qualification | Validated for automotive applications including infotainment display links and camera serial interfaces - supports PPAP documentation and zero-defect manufacturing requirements. |
| Parallelable architecture | Two internal diodes can be operated in parallel (pins 1–3 + pins 2–3) to double IPPM to 60 A and halve effective series inductance - reduces clamping voltage by up to 15 % under high-dI/dt events. |
| Low leakage current | 20 μA max at VR = 4 V - prevents signal degradation and battery drain in always-on IoT sensor nodes and portable medical devices. |
| Green RoHS-compliant packaging | e3 Sn plating, halogen-free molding compound, compliant with JEDEC J-STD-020 - supports global environmental compliance and lead-free assembly. |
Applications
| USB 2.0 Interface Protection | HDMI Hot-Plug Detection Line |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host/device ports against ESD events during cable insertion/removal in consumer electronics and industrial HMIs. IC Role / Device Role / Timing Role: Primary ESD clamp placed immediately before USB transceiver IC, operating in BiAs mode with pin 3 grounded. Use Value: Maintains 420 pF max total line capacitance (2 × 310 pF || trace), preserving eye diagram integrity at 480 Mbps while suppressing ±30 kV discharges. |
Use Scenario: Safeguarding HDMI CEC and HPD (hot-plug detect) lines against electrostatic discharge during cable mating in AV receivers and set-top boxes. IC Role / Device Role / Timing Role: Standalone transient suppressor on 5 V-tolerant HPD line, configured in BiSy mode (pins 1–2 only, pin 3 open). Use Value: Delivers symmetrical 15.7 V clamping at 30 A, limiting voltage overshoot below HDMI specification's 5.5 V absolute maximum rating. |
| Automotive Camera Serial Link | Industrial RS-485 Data Port |
Use Scenario: Protecting FPD-Link III or GMSL serializer/deserializer data pairs in automotive rear-view and surround-view camera modules. IC Role / Device Role / Timing Role: Dual-channel ESD guard on differential clock and data lanes, leveraging BiAs mode to preserve common-mode range and minimize jitter. Use Value: −55 °C to +150 °C operation and AEC-Q101 qualification ensure reliability across vehicle thermal cycles; 11.2 V VC avoids clipping valid signal peaks. |
Use Scenario: Shielding RS-485 transceiver A/B lines from lightning-induced surges and ESD in factory automation PLCs and motor drives. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), placed adjacent to transceiver pins in BiAs configuration. Use Value: 429 W peak pulse power rating handles 1 kV/0.5 Ω surge test waveforms; low 20 μA IR prevents bias current errors in precision termination networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT04C-E3-18 | Direct replacement family; identical SOT-23 footprint, same VRWM (4 V), VBR (5–7 V), and ±30 kV ESD rating; improved thermal resistance and updated process. | End-of-life notice issued for GSOT04C-E3-18 (Jan 2025); VGSOT04C-E3-18 is designated successor with full backward compatibility. | Select VGSOT04C-E3-18 for new designs requiring long-term supply continuity and enhanced surge robustness. |
| TPD2E001DRYR | Single-channel, 2-pin SOT-553; lower VRWM (3.3 V), higher CD (12 pF typical), no BiSy mode support; not pin-compatible. | Targeted at space-constrained mobile I/O; lacks dual-line capability and automotive qualification. | Consider only for low-capacitance (<15 pF), single-line applications where BiAs functionality is unnecessary. |
Compared with GSOT04C-E3-18, VGSOT04C-E3-18 offers guaranteed supply beyond 2025 and marginally improved thermal performance, while TPD2E001DRYR trades dual-line protection and automotive qualification for ultra-low capacitance in compact mobile layouts.
Availability
GSOT04C-E3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive camera serial links, and industrial RS-485 data ports requiring stable component supply through Q4 2024.
Supply support for GSOT04C-E3-18 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, and protection devices for automotive, industrial, and computing markets.
The GSOTxxC family was engineered specifically for high-speed data line ESD protection in automotive infotainment and industrial communication systems, emphasizing asymmetric clamping, AEC-Q101 compliance, and SOT-23 manufacturability.
FAQ
What is the maximum clamping voltage of GSOT04C-E3-18 under IEC 61000-4-5 surge conditions?
The GSOT04C-E3-18 exhibits a maximum reverse clamping voltage (VC) of 14.3 V at 30 A peak pulse current (IPPM) for pin 1–3 or pin 2–3 paths, measured per IEC 61000-4-5 (8/20 μs waveform). This value ensures downstream 12 V-tolerant transceivers remain within safe operating limits during surge events.
Can GSOT04C-E3-18 be used for single-line protection, and how is it configured?
Yes, GSOT04C-E3-18 supports single-line BiSy-mode protection: connect pin 1 to the signal line, pin 2 to ground (or vice versa), and leave pin 3 unconnected. In this configuration, it delivers symmetrical clamping with VRWM = 4.5 V and VBR = 5.5–7.7 V, suitable for CAN or RS-485 bus lines.
Is GSOT04C-E3-18 qualified for automotive applications?
Yes, GSOT04C-E3-18 is AEC-Q101 qualified and rated for operation from −55 °C to +150 °C junction temperature. It meets automotive-grade reliability requirements for infotainment, ADAS camera links, and body electronics, with full test reports available upon request.
What is the typical capacitance of GSOT04C-E3-18 at 0 V bias, and why does it matter?
The GSOT04C-E3-18 has a typical capacitance of 310 pF at 0 V and 1 MHz. This value directly impacts high-speed signal integrity: for USB 2.0 (480 Mbps), it keeps insertion loss below 0.5 dB up to 100 MHz, preventing eye closure and bit errors in differential data transmission.
What is the recommended PCB layout for optimal ESD performance with GSOT04C-E3-18?
Place GSOT04C-E3-18 within 3 mm of the protected connector, route pins 1 and 2 directly to the signal traces with minimal stub length, and connect pin 3 to a low-inductance ground plane using multiple vias. Avoid routing other signals beneath the device to prevent coupling and maintain specified 310 pF capacitance.
GSOT04C-E3-18 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:
- 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-E3-18 FAQ
1.How can I place an order for GSOT04C-E3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT04C-E3-18 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-E3-18 reliable?
The price and inventory of GSOT04C-E3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT04C-E3-18 is usually 5 days.
3.What payment methods are accepted for GSOT04C-E3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT04C-E3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT04C-E3-18?
GSOT04C-E3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT04C-E3-18 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-E3-18?
For technical support, including GSOT04C-E3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT04C-E3-18 requirements.
6.How does Aetrix verify that GSOT04C-E3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT04C-E3-18 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-E3-18 meets industry standards.
7.What is the process for return or replacement of GSOT04C-E3-18?
All GSOT04C-E3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT04C-E3-18, 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-E3-18 part is unused and in its original packaging.
Return procedure for GSOT04C-E3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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