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Vishay General Semiconductor - Diodes Division VETH100A203S-G3-08
- Part No.:
- VETH100A203S-G3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VETH100A203S-G3-08.pdf
- Description:
- BIDIRECTIONAL DUAL LINE ESD PROT
- Quantity:
- Payment:
- Shipping:
Inventory:473
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Product details
Overview
VETH100A203S-G3-08 from Vishay Semiconductors is a two-line bidirectional ESD protection diode in SOT-23 package, designed for Automotive Ethernet 100BASE-T1 and 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 transient suppression on unshielded twisted-pair vehicle networks.
For engineers reviewing the VETH100A203S-G3-08 datasheet, VETH100A203S-G3-08 pinout, VETH100A203S-G3-08 application, or VETH100A203S-G3-08 equivalent, key selection criteria include snap-back clamping behavior (VC = 31 V @ 1 A TLP), dynamic resistance (rdyn = 0.4 Ω), low leakage (<0.1 μA @ 24 V), AEC-Q101 qualification, and OPEN Alliance compliance for automotive Ethernet signal integrity.
Technical Context
The VETH100A203S-G3-08 implements a snap-back triggered silicon avalanche structure optimized for high-speed data lines. Its bidirectional clamping action activates above 100 V, limiting transients to ≤31 V at 1 A TLP while maintaining sub-2 pF capacitance across 0–24 V reverse bias - critical for preserving 100/1000BASE-T1 signal integrity.
It operates within -55 °C to +150 °C junction temperature range and meets OPEN Alliance EMC test specifications for suppression devices in automotive Ethernet systems. The device connects between differential data lines and ground, with no internal series resistance or integrated termination, requiring external layout optimization for impedance matching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protection lines | 2-line bidirectional - protects both ETH+ and ETH− simultaneously without polarity dependency |
| Working voltage | ±24 V - supports full automotive supply rail variation and common-mode noise margin |
| Trigger voltage | >100 V - prevents false triggering during normal Ethernet signaling (peak <2.5 V) |
| Clamping voltage | 31 V @ 1 A TLP - limits ESD-induced overvoltage to safe levels for PHY ICs |
| Capacitance | 1.75 pF @ 0 V, 1 MHz - negligible impact on 100 MHz+ Ethernet bandwidth |
| Dynamic resistance | 0.4 Ω - ensures stable clamping across pulse current variations |
| ESD immunity | ±15 kV contact discharge (IEC 61000-4-2) - exceeds automotive OEM requirements |
Pinout & Package
SOT-23 (2S) package: 3-pin surface-mount, 2.9 mm × 1.3 mm × 1.01 mm body, MSL level 1, lead-free Sn (e3) plating, compatible with standard reflow profiles (peak ≤260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Line 1 | Connects to first Ethernet differential line (e.g., ETH+); forms one half of bidirectional path to ground |
| Pin 2 | Cathode (common ground terminal) | Shared ground reference for both protection paths; must be low-inductance connection to system ground plane |
| Pin 3 | Anode of Line 2 | Connects to second Ethernet differential line (e.g., ETH−); symmetric counterpart to Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| OPEN Alliance compliance | Validated per IEEE 100BASE-T1 and 1000BASE-T1 EMC suppression device specs - enables direct use in certified automotive Ethernet designs |
| AEC-Q101 qualification | Qualified for automotive underhood and cabin environments - supports long-term reliability in harsh thermal and vibration conditions |
| Snap-back clamping | Activates above 100 V and clamps to ≤31 V at 1 A TLP - minimizes stress on downstream PHY transceivers |
| Low dynamic resistance | rdyn = 0.4 Ω - ensures predictable clamping voltage across varying ESD pulse amplitudes |
| Sub-2 pF capacitance | 1.75 pF typical @ 0 V - preserves signal rise/fall times and insertion loss below -1 dB up to 1 GHz |
Applications
| Automotive 100BASE-T1 Ethernet | Automotive 1000BASE-T1 Ethernet |
|---|---|
Use Scenario: In-vehicle infotainment backbone connecting head unit, ADAS camera modules, and gateway ECUs via single-pair unshielded twisted cable. IC Role / Device Role / Timing Role: Bidirectional ESD suppressor placed at PHY interface, protecting differential pair against ISO 10605 and IEC 61000-4-2 transients induced by harness coupling. Use Value: Enables reliable 100 Mbps operation with <1.75 pF loading and <31 V clamping - maintains link integrity during ESD events without packet loss or PHY reset. | Use Scenario: High-bandwidth sensor fusion network linking radar, lidar, and central domain controller using 1000BASE-T1 physical layer. IC Role / Device Role / Timing Role: Transient voltage suppressor on differential data lanes, positioned immediately adjacent to PHY package to minimize loop inductance. Use Value: Delivers <2 pF capacitance and 0.4 Ω rdyn to preserve 1 Gbps eye diagram integrity while clamping 15 kV ESD pulses to safe levels for 28 nm PHY ICs. |
| Body Control Module Interface | Automotive Gateway ESD Protection |
Use Scenario: Ethernet link between body control module and door module for centralized window, mirror, and lighting control. IC Role / Device Role / Timing Role: Two-line ESD clamp bridging ETH+ and ETH− to chassis ground, mounted directly at connector entry point. Use Value: Prevents latch-up or damage in low-voltage 3.3 V PHYs during door slam or seat motor switching transients - validated for AEC-Q101 operation at 150 °C. | Use Scenario: Front-end protection for multi-protocol automotive gateway handling CAN FD, LIN, and 100BASE-T1 traffic. IC Role / Device Role / Timing Role: First-stage ESD guard on Ethernet ingress path, decoupled from secondary TVS arrays and filtering components. Use Value: Provides fast-response snap-back clamping (tR <1 ns) before secondary protection engages - reduces cumulative stress on upstream PHY and improves system-level EMC pass rate. |
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; 5.5 V working voltage; 0.3 pF capacitance; not AEC-Q101 qualified | Targeted at consumer USB/PCIe interfaces, not automotive Ethernet | Select only for non-automotive, low-voltage, high-speed serial links where bidirectionality and 24 V standoff are unnecessary |
| ON SEMICONDUCTOR NUF2221MUTAG | 2-line bidirectional; 5 V working voltage; 0.6 pF capacitance; AEC-Q101 qualified; lacks OPEN Alliance validation | Suitable for general-purpose automotive data lines (e.g., USB, I²C), but not validated for 100/1000BASE-T1 EMC tests | Use when cost sensitivity outweighs OPEN Alliance certification requirement and 24 V standoff is not needed |
Compared with RCLAMP0524P.TCT and NUF2221MUTAG, the VETH100A203S-G3-08 uniquely combines AEC-Q101 qualification, OPEN Alliance 100/1000BASE-T1 compliance, ±24 V working range, and bidirectional snap-back clamping - making it the only option qualified for production automotive Ethernet PHY protection without design revalidation.
Availability
VETH100A203S-G3-08 is available at Aetrix Electronics and suitable for automotive Ethernet 100BASE-T1, 1000BASE-T1, and body control module interfaces requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant ESD protection.
Supply support for VETH100A203S-G3-08 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 Intertechnology is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability solutions for automotive, industrial, and computing markets.
The VETH series targets automotive Ethernet physical layer protection, engineered specifically to meet OPEN Alliance EMC test requirements and AEC-Q101 stress conditions for in-vehicle networking.
FAQ
What is the clamping voltage of the VETH100A203S-G3-08 at 10 A TLP?
The VETH100A203S-G3-08 has a clamping voltage of ≤34 V at 10 A transmission line pulse (TLP), measured with tp = 100 ns. This value reflects its low dynamic resistance (0.4 Ω) and stable snap-back behavior under high-current ESD stress. The VETH100A203S-G3-08 maintains this performance across its full operating temperature range (-55 °C to +150 °C), ensuring consistent protection in automotive underhood environments.
Is the VETH100A203S-G3-08 qualified for automotive applications?
Yes, the VETH100A203S-G3-08 is AEC-Q101 qualified and rated for junction temperatures from -55 °C to +150 °C. It is specifically designed for automotive Ethernet systems and has passed all required stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. The VETH100A203S-G3-08 also meets OPEN Alliance 100BASE-T1 and 1000BASE-T1 EMC test specifications for suppression devices.
Does the VETH100A203S-G3-08 support bidirectional ESD protection?
Yes, the VETH100A203S-G3-08 is a two-line bidirectional ESD protection diode. Pins 1 and 3 serve as anodes for separate data lines (e.g., ETH+ and ETH−), while Pin 2 is the common cathode tied to ground. This architecture allows symmetrical clamping for positive and negative transients on both lines without polarity constraints. The VETH100A203S-G3-08 achieves this using matched snap-back silicon avalanche structures in a single SOT-23 package.
What is the maximum capacitance of the VETH100A203S-G3-08 at 1 MHz?
The VETH100A203S-G3-08 has a maximum capacitance of 2 pF at 1 MHz, measured at 0 V reverse bias with ±10 mV AC signal. At ±1 V AC, capacitance drops to 1.45 pF typical. This ultra-low value ensures minimal signal distortion on 100BASE-T1 (up to 66 MHz) and 1000BASE-T1 (up to 400 MHz) channels. The VETH100A203S-G3-08's capacitance remains stable across its ±24 V working range, supporting robust Ethernet link budgets.
Can the VETH100A203S-G3-08 replace older Vishay ESD diodes like VETH05A203S?
No, the VETH100A203S-G3-08 is not a drop-in replacement for VETH05A203S. While both are SOT-23 two-line ESD diodes, the VETH100A203S-G3-08 features a higher 100 V trigger voltage and ±24 V working range versus VETH05A203S's 5 V working voltage. Their electrical characteristics, including clamping voltage and leakage, differ significantly. The VETH100A203S-G3-08 is optimized for automotive Ethernet, whereas VETH05A203S targets low-voltage digital interfaces.
VETH100A203S-G3-08 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-G3-08 FAQ
1.How can I place an order for VETH100A203S-G3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VETH100A203S-G3-08 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-G3-08 reliable?
The price and inventory of VETH100A203S-G3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VETH100A203S-G3-08 is usually 5 days.
3.What payment methods are accepted for VETH100A203S-G3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VETH100A203S-G3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VETH100A203S-G3-08?
VETH100A203S-G3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VETH100A203S-G3-08 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-G3-08?
For technical support, including VETH100A203S-G3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VETH100A203S-G3-08 requirements.
6.How does Aetrix verify that VETH100A203S-G3-08 is sourced from the original manufacturer or authorized distributors?
All VETH100A203S-G3-08 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-G3-08 meets industry standards.
7.What is the process for return or replacement of VETH100A203S-G3-08?
All VETH100A203S-G3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VETH100A203S-G3-08, 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-G3-08 part is unused and in its original packaging.
Return procedure for VETH100A203S-G3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VETH100A203S-G3-08 Tags
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