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Vishay General Semiconductor - Diodes Division VETH100A203SHG3-18
- Part No.:
- VETH100A203SHG3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VETH100A203SHG3-18.pdf
- Description:
- BIDIRECTIONAL DUAL LINE ESD PROT
- Quantity:
- Payment:
- Shipping:
Inventory:9,900
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Product details
Overview
VETH100A203SHG3-18 from Vishay Semiconductors is a two-line bidirectional ESD-protection diode in SOT-23 package, rated for ±24 V working voltage, >100 V trigger voltage, and <2 pF capacitance, designed specifically for Automotive Ethernet 100BASE-T1 and 1000BASE-T1 interfaces with AEC-Q101 qualification.
For engineers reviewing the VETH100A203SHG3-18 datasheet, VETH100A203SHG3-18 pinout, VETH100A203SHG3-18 application, or VETH100A203SHG3-18 equivalent, key selection criteria include snap-back clamping performance (VC = 31 V @ 1 A TLP), dynamic resistance (rdyn = 0.4 Ω), ISO 10605/IEC 61000-4-2 ±15 kV ESD immunity, and OPEN Alliance compliance for automotive unshielded twisted-pair networks.
Technical Context
The VETH100A203SHG3-18 implements a snap-back triggered silicon avalanche structure optimized for high-speed Ethernet signal integrity: it remains non-conductive below ±100 V, then transitions to low-impedance clamping at ITLP = 1 A with VC ≤ 31 V and rdyn ≤ 0.4 Ω, minimizing voltage overshoot during ESD transients.
Its bidirectional dual-channel architecture protects both differential lines of Automotive Ethernet simultaneously; the <1.75 pF typical capacitance at 1 MHz and VR = 0 V ensures negligible insertion loss up to 1 GHz, preserving signal eye diagrams required by IEEE 100BASE-T1 and 1000BASE-T1 physical layer specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protection Type | Bidirectional, 2-line ESD protection for differential Ethernet pairs |
| Working Voltage (VRWM) | ±24 V - supports full automotive supply rail margin and common-mode noise tolerance |
| Trigger Voltage (VT) | >100 V - prevents false triggering during normal Ethernet operation and EMC testing |
| Clamping Voltage (VC) | 31 V @ 1 A TLP - limits transient voltage seen by PHY IC to safe level under ESD stress |
| Capacitance (CD) | 1.75 pF @ 1 MHz - maintains signal integrity for 100/1000BASE-T1 data rates up to 1 Gbps |
| ESD Immunity | ±15 kV contact discharge (ISO 10605 / IEC 61000-4-2) - meets automotive OEM system-level ESD requirements |
| Dynamic Resistance (rdyn) | 0.4 Ω - ensures stable clamping across pulse current variation, reducing voltage droop |
Pinout & Package
SOT-23 (2S) package, 3-pin surface-mount device with standard footprint per Vishay document S8-V-3929.01-009 (4); MSL Level 1, peak reflow temperature 260 °C, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 Anode/Cathode (bidirectional) | Connects to first Ethernet differential line (e.g., ETH_P); symmetric conduction path |
| Pin 2 | GND | Common ground reference for both protection paths; must be low-inductance connection |
| Pin 3 | Line 2 Anode/Cathode (bidirectional) | Connects to second Ethernet differential line (e.g., ETH_N); identical behavior to Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| OPEN Alliance Compliance | Validated for IEEE 100BASE-T1 and 1000BASE-T1 suppression device requirements including mixed-mode S-parameters and RF immunity |
| AEC-Q101 Qualification | Qualified for automotive underhood and cabin environments (-55 °C to +150 °C junction) |
| Snap-Back Clamping | Enables low VC (31 V @ 1 A) with minimal dependence on pulse current due to sub-0.4 Ω rdyn |
| Low-Leakage Operation | IR ≤ 0.1 μA @ 24 V ensures no DC loading on Ethernet bias networks or termination resistors |
| High-Voltage Standoff | Blocks ±100 V transients induced by vehicle EMI without conduction, preserving link stability |
Applications
| Automotive Ethernet PHY Protection | 100BASE-T1 In-Vehicle Network |
|---|---|
Use Scenario: Protecting Ethernet PHY transceivers in ADAS camera modules against ESD events during assembly, service, or vehicle operation. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed between differential pair and ground, upstream of PHY input pins. Use Value: Prevents latch-up or damage to PHY ICs while maintaining signal fidelity via <1.75 pF capacitance and <31 V clamping at 1 A. | Use Scenario: Integration into gateway ECUs supporting 100BASE-T1 backbone communication between domain controllers. IC Role / Device Role / Timing Role: ESD suppression element on unshielded twisted-pair (UTP) interface, meeting OPEN Alliance test plan requirements. Use Value: Enables robust EMC performance (±15 kV contact discharge) without degrading 100 Mbps signal integrity or violating insertion loss specs. |
| 1000BASE-T1 High-Speed Link | Automotive Infotainment Backbone |
Use Scenario: Securing 1 Gbps Ethernet links in central compute units connecting display clusters and audio processors. IC Role / Device Role / Timing Role: Dual-line ESD clamp ensuring signal integrity over extended UTP cable runs (>15 m) in noisy powertrain zones. Use Value: Delivers 34 V clamping at 10 A TLP and <2 pF capacitance to preserve eye opening and jitter budget at 1 GHz bandwidth. | Use Scenario: Protecting infotainment head units connected via Automotive Ethernet to telematics and HVAC control modules. IC Role / Device Role / Timing Role: Front-end ESD guard for differential receiver inputs exposed to service port connectors and harness routing near motors. Use Value: Provides AEC-Q101 reliability and ±15 kV ESD immunity without adding impedance discontinuity or crosstalk in high-density PCB layouts. |
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 VRWM; 0.3 pF capacitance; not AEC-Q101 qualified | Targeted at low-voltage USB/PCIe interfaces, not Automotive Ethernet | Select only for non-automotive, low-voltage, high-speed digital interfaces requiring ultra-low capacitance |
| ON SEMICONDUCTOR NUF2221MUTAG | Bidirectional; 5 V VRWM; 0.65 pF; AEC-Q101 qualified; 2-line but lower standoff | Designed for CAN/LIN bus protection, not 100/1000BASE-T1 compliance | Use where lower working voltage and smaller capacitance are prioritized over Ethernet-specific transient handling |
Compared with RCLAMP0524P.TCT and NUF2221MUTAG, the VETH100A203SHG3-18 uniquely combines ±24 V working range, >100 V trigger, OPEN Alliance validation, and 1.75 pF capacitance-making it the only option qualified for production Automotive Ethernet PHY protection at 100/1000BASE-T1 data rates.
Availability
VETH100A203SHG3-18 is available at Aetrix Electronics and suitable for automotive Ethernet PHY protection, 100BASE-T1 in-vehicle networks, and 1000BASE-T1 high-speed link designs requiring stable component supply, AEC-Q101 qualification, and OPEN Alliance compliance.
Supply support for VETH100A203SHG3-18 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 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 is engineered specifically for Automotive Ethernet ESD protection, addressing the stringent signal integrity, high-voltage standoff, and system-level EMC requirements of OPEN Alliance–compliant 100/1000BASE-T1 networks.
FAQ
What is the maximum operating temperature for VETH100A203SHG3-18?
The VETH100A203SHG3-18 has a junction temperature range of -55 °C to +150 °C, fully compliant with AEC-Q101 for under-hood and cabin automotive applications. This rating is verified per JESD22-A103 and JESD22-A104 test conditions, and applies to continuous operation under specified power dissipation limits. The SOT-23 package's thermal resistance enables reliable performance even in thermally constrained ECU enclosures where the VETH100A203SHG3-18 is deployed.
Does VETH100A203SHG3-18 meet OPEN Alliance 1000BASE-T1 requirements?
Yes, the VETH100A203SHG3-18 is explicitly validated for IEEE 1000BASE-T1 EMC Test Specification for Suppression Devices per OPEN Alliance TC12 documentation. Test reports-including mixed-mode S-parameter measurement, ESD discharge current profiling, and RF immunity evaluation-confirm its suitability for 1 Gbps Automotive Ethernet links. These results are available upon request from Vishay's ESD protection team at [email protected].
What is the clamping voltage of VETH100A203SHG3-18 at 10 A TLP current?
The VETH100A203SHG3-18 delivers a clamping voltage of ≤34 V at ITLP = 10 A with 100 ns pulse width, as specified in its electrical characteristics table. This value reflects stable snap-back behavior with low dynamic resistance (rdyn = 0.4 Ω), ensuring predictable voltage limiting during high-energy ESD events. The clamping performance is measured under standardized TLP conditions and confirmed across production lots for the VETH100A203SHG3-18.
Is VETH100A203SHG3-18 RoHS-compliant and lead-free?
Yes, the VETH100A203SHG3-18 is RoHS-compliant and features Sn (e3) lead plating, per Vishay's environmental compliance documentation. Its terminations are lead-free, and soldering compatibility is verified per J-STD-020 MSL Level 1 guidelines with peak reflow temperature up to 260 °C. The "G3" in the part number denotes green (halogen-free) and lead-free compliance, and the "H" indicates tape-and-reel packaging per ordering code VETH100A203SHG3-18.
How does VETH100A203SHG3-18 differ from standard TVS diodes in Ethernet applications?
Unlike general-purpose TVS diodes, the VETH100A203SHG3-18 uses a tailored snap-back avalanche structure with >100 V trigger voltage and <2 pF capacitance-enabling it to remain transparent during normal 100/1000BASE-T1 operation while clamping fast ESD pulses. Standard TVS devices typically exhibit higher capacitance (>5 pF) or lower trigger voltages (<30 V), causing signal degradation or false triggering. The VETH100A203SHG3-18 is also OPEN Alliance–tested and AEC-Q101 qualified, unlike most generic TVS parts.
VETH100A203SHG3-18 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
VETH100A203SHG3-18 FAQ
1.How can I place an order for VETH100A203SHG3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VETH100A203SHG3-18 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 VETH100A203SHG3-18 reliable?
The price and inventory of VETH100A203SHG3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VETH100A203SHG3-18 is usually 5 days.
3.What payment methods are accepted for VETH100A203SHG3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VETH100A203SHG3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VETH100A203SHG3-18?
VETH100A203SHG3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VETH100A203SHG3-18 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 VETH100A203SHG3-18?
For technical support, including VETH100A203SHG3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VETH100A203SHG3-18 requirements.
6.How does Aetrix verify that VETH100A203SHG3-18 is sourced from the original manufacturer or authorized distributors?
All VETH100A203SHG3-18 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 VETH100A203SHG3-18 meets industry standards.
7.What is the process for return or replacement of VETH100A203SHG3-18?
All VETH100A203SHG3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VETH100A203SHG3-18, 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 VETH100A203SHG3-18 part is unused and in its original packaging.
Return procedure for VETH100A203SHG3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VETH100A203SHG3-18 Tags
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