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Vishay General Semiconductor - Diodes Division VETH100A203S-G3-18
- Part No.:
- VETH100A203S-G3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VETH100A203S-G3-18.pdf
- Description:
- BIDIRECTIONAL DUAL LINE ESD PROT
- Quantity:
- Payment:
- Shipping:
Inventory:9,980
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Product details
Overview
VETH100A203S-G3-18 from Vishay Semiconductors is a two-line bidirectional ESD protection diode in SOT-23 package, designed for Automotive Ethernet (100BASE-T1/1000BASE-T1) interfaces. It provides ±24 V working range, >100 V trigger voltage, <2 pF capacitance, and ±15 kV ESD immunity per IEC 61000-4-2, enabling robust signal integrity in unshielded twisted-pair vehicle networks.
For engineers reviewing the VETH100A203S-G3-18 datasheet, VETH100A203S-G3-18 pinout, VETH100A203S-G3-18 application, or VETH100A203S-G3-18 equivalent, key selection criteria include snap-back clamping performance at 1 A TLP (VC ≤31 V), dynamic resistance ≤0.4 Ω, and OPEN Alliance compliance for automotive Ethernet suppression devices.
Technical Context
The VETH100A203S-G3-18 implements a high-voltage snap-back structure optimized for bidirectional transient suppression on differential Ethernet pairs. Its trigger voltage exceeds 100 V to avoid false triggering during normal ±24 V operation, while maintaining low dynamic resistance (≤0.4 Ω) to clamp ESD pulses to ≤31 V at 1 A TLP.
Designed specifically for OPEN Alliance 100BASE-T1 and 1000BASE-T1 compliance, it delivers sub-2 pF capacitance (1.45–1.75 pF at 1 MHz) to minimize signal distortion, and supports AEC-Q101 qualification with MSL level 1 soldering compatibility up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protection lines | 2-line bidirectional path - protects both differential Ethernet pair conductors simultaneously |
| Working voltage | ±24 V - compatible with Automotive Ethernet common-mode voltage range |
| Trigger voltage | >100 V (TLP, 1 A) - prevents conduction during normal signal swing |
| Clamping voltage | ≤31 V at 1 A TLP - limits transient stress on PHY transceivers |
| Capacitance | 1.45–1.75 pF at 1 MHz - preserves 100/1000BASE-T1 signal integrity |
| ESD immunity | ±15 kV contact discharge (IEC 61000-4-2) - meets automotive system-level ESD requirements |
| Dynamic resistance | ≤0.4 Ω - ensures stable clamping across pulse current variation |
Pinout & Package
SOT-23 package (Type Code 2S), 3-terminal surface-mount device weighing 9.2 mg, UL 94 V-0 molding compound, MSL level 1, compatible with standard reflow profiles (peak ≤260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Line 1 | Connects to first Ethernet data line (e.g., CH+); forms one half of bidirectional protection path |
| Pin 2 | Cathode (common ground) | Shared ground reference for both protection paths; must be low-inductance connection to chassis/system ground |
| Pin 3 | Anode of Line 2 | Connects to second Ethernet data line (e.g., CH−); completes differential pair protection |
Key Features
| Feature | Design Value |
|---|---|
| OPEN Alliance compliance | Validated for IEEE 100BASE-T1 and 1000BASE-T1 EMC suppression requirements - enables drop-in integration into certified automotive Ethernet designs |
| Snap-back clamping | Triggers >100 V and clamps to ≤31 V at 1 A TLP - protects PHY ICs without compromising signal swing |
| Low capacitance | 1.45–1.75 pF at 1 MHz - avoids insertion loss and return loss degradation in 600 MHz bandwidth channels |
| AEC-Q101 qualified | Qualified per stress test conditions for automotive under-hood and cabin environments - supports long-term reliability in harsh thermal cycles |
| Lead (Pb)-free terminations | Sn (e3) plating - compatible with RoHS-compliant assembly and automated optical inspection (AOI) |
Applications
| Automotive 100BASE-T1 Network | Automotive 1000BASE-T1 Network |
|---|---|
Use Scenario: High-speed communication between ADAS ECUs and central domain controllers over single-pair unshielded twisted cable. IC Role / Device Role / Timing Role: Bidirectional ESD suppressor placed at connector interface to absorb coupling transients from adjacent power or motor circuits. Use Value: Prevents latch-up or damage to Ethernet PHY ICs during ISO 10605 contact discharge events while maintaining <0.5 dB insertion loss at 100 MHz. | Use Scenario: In-vehicle infotainment backbone linking head unit, display, and camera modules with multi-gigabit throughput. IC Role / Device Role / Timing Role: Differential line protector mounted directly at PHY package pins to minimize trace inductance before clamping. Use Value: Enables reliable 1000BASE-T1 operation by limiting clamping voltage to ≤34 V at 10 A TLP, preserving signal eye opening. |
| Electric Powertrain Control | Vehicle OTA Update Interface |
Use Scenario: Ethernet link between battery management system (BMS) and vehicle control unit in high-EMI traction inverter zones. IC Role / Device Role / Timing Role: Transient voltage suppressor bridging differential pair to chassis ground to shunt EMI-induced surges. Use Value: Withstands repeated ±15 kV ESD strikes without parameter shift, ensuring functional safety continuity per ISO 26262 ASIL-B pathways. | Use Scenario: Secure firmware update channel connecting telematics control unit (TCU) to cloud services via gateway Ethernet port. IC Role / Device Role / Timing Role: Front-end ESD guard for Ethernet physical layer during hot-plug and field service operations. Use Value: Maintains <2 pF capacitance to avoid jitter accumulation across multi-hop packet timing, supporting precise OTA synchronization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SEMTECH RCLAMP0524P.TCT | Unidirectional configuration; lower VRWM (5.5 V); higher capacitance (3.5 pF typical) | Targeted at low-voltage USB/CAN interfaces, not Automotive Ethernet | Select only for non-Automotive Ethernet systems requiring lower stand-off voltage |
| ON SEMICONDUCTOR ESD7L5.0DT5G | Single-line device; 5.0 V VRWM; 0.5 pF capacitance; no OPEN Alliance validation | Designed for general-purpose board-level ESD, not differential high-speed protocols | Use where ultra-low capacitance is critical but 100/1000BASE-T1 compliance is not required |
Compared with RCLAMP0524P.TCT and ESD7L5.0DT5G, the VETH100A203S-G3-18 uniquely supports bidirectional ±24 V operation, OPEN Alliance validation, and sub-2 pF capacitance - making it the only option qualified for production Automotive Ethernet PHY protection without redesign.
Availability
VETH100A203S-G3-18 is available at Aetrix Electronics and suitable for Automotive Ethernet 100BASE-T1, 1000BASE-T1, and electric powertrain control applications requiring stable component supply and AEC-Q101-compliant ESD protection.
Supply support for VETH100A203S-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 VETH series targets Automotive Ethernet physical layer protection, engineered to meet OPEN Alliance EMC specifications and replace legacy TVS arrays in next-generation vehicle networking architectures.
FAQ
What is the primary function of the VETH100A203S-G3-18 in an Automotive Ethernet design?
The VETH100A203S-G3-18 serves as a bidirectional ESD protection diode for differential 100BASE-T1 and 1000BASE-T1 data lines. It clamps transient voltages above ±100 V while remaining non-conductive during normal ±24 V operation, protecting PHY transceivers from ISO 10605 and IEC 61000-4-2 ESD events without degrading signal integrity. Its design ensures compatibility with OPEN Alliance test requirements.
Does the VETH100A203S-G3-18 require external biasing or control signals?
No, the VETH100A203S-G3-18 operates passively with no external biasing, control inputs, or enable pins. It functions solely based on voltage threshold behavior: remaining high-impedance below its >100 V trigger voltage and entering low-impedance snap-back clamping above that threshold. This simplifies layout and eliminates power supply dependencies in the VETH100A203S-G3-18 implementation.
Is the VETH100A203S-G3-18 qualified for automotive under-hood applications?
Yes, the VETH100A203S-G3-18 is AEC-Q101 qualified and rated for junction temperatures from −55 °C to +150 °C. Its SOT-23 package meets MSL level 1 moisture sensitivity and withstands peak reflow temperatures up to 260 °C. These qualifications confirm suitability for under-hood environments where thermal cycling and mechanical vibration are present in the VETH100A203S-G3-18 deployment.
How does the VETH100A203S-G3-18 differ from standard TVS diodes in Ethernet applications?
Unlike general-purpose TVS diodes, the VETH100A203S-G3-18 features bidirectional 2-line architecture, sub-2 pF capacitance, and OPEN Alliance validation for 100/1000BASE-T1. Standard TVS diodes typically exhibit >5 pF capacitance and lack snap-back characteristics needed to clamp cleanly at high currents without voltage overshoot - limitations that make them unsuitable for high-speed Ethernet in the VETH100A203S-G3-18 use case.
Can the VETH100A203S-G3-18 be used in non-automotive Ethernet systems?
Yes, the VETH100A203S-G3-18 can protect industrial or commercial Ethernet links operating within ±24 V common-mode range and requiring ±15 kV ESD immunity. However, its optimized low capacitance and snap-back response are most valuable in high-speed differential applications like 1000BASE-T1. For non-automotive use, verify system-level EMC compliance independently, as OPEN Alliance validation applies specifically to automotive test configurations for the VETH100A203S-G3-18.
VETH100A203S-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- 34V (Typ)
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- Ethernet
- Capacitance @ Frequency:
- 1.75pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VETH100A203S-G3-18 FAQ
1.How can I place an order for VETH100A203S-G3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VETH100A203S-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 VETH100A203S-G3-18 reliable?
The price and inventory of VETH100A203S-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 VETH100A203S-G3-18 is usually 5 days.
3.What payment methods are accepted for VETH100A203S-G3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VETH100A203S-G3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VETH100A203S-G3-18?
VETH100A203S-G3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VETH100A203S-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 VETH100A203S-G3-18?
For technical support, including VETH100A203S-G3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VETH100A203S-G3-18 requirements.
6.How does Aetrix verify that VETH100A203S-G3-18 is sourced from the original manufacturer or authorized distributors?
All VETH100A203S-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 VETH100A203S-G3-18 meets industry standards.
7.What is the process for return or replacement of VETH100A203S-G3-18?
All VETH100A203S-G3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VETH100A203S-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 VETH100A203S-G3-18 part is unused and in its original packaging.
Return procedure for VETH100A203S-G3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VETH100A203S-G3-18 Tags
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