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Nexperia USA Inc. PESD2ETH1GXT-QR
- Part No.:
- PESD2ETH1GXT-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PESD2ETH1GXT-QR.pdf
- Description:
- TVS DIODE 24VWM TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:17,703
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Product details
Overview
PESD2ETH1GXT-QR from Nexperia is a bidirectional dual-line automotive ESD protection diode in SOT23 package, compliant with OPEN Alliance IEEE 100BASE-T1 and 1000BASE-T1 standards, featuring 100 V min trigger voltage, <1.3 pF capacitance, and 30 kV IEC 61000-4-2 contact ESD rating - designed to protect Ethernet PHY signal lines in vehicle domain controllers and ADAS camera links.
For engineers reviewing the PESD2ETH1GXT-QR datasheet, PESD2ETH1GXT-QR pinout, PESD2ETH1GXT-QR application, or PESD2ETH1GXT-QR equivalent, key selection criteria include differential line capacitance matching (≤2%), clamping voltage under 8/20 µs surge (≤160 V), AEC-Q101 qualification, and common-cathode dual-diode topology for symmetric Ethernet bus protection.
Technical Context
This device implements a dual-channel, common-cathode TVS diode structure optimized for 100/1000BASE-T1 automotive Ethernet. It uses silicon avalanche junctions with TLP-characterized dynamic resistance of 0.6 Ω and holds >28 V after triggering, enabling robust transient suppression without signal integrity degradation on high-speed differential pairs.
Its design satisfies OPEN Alliance's four-test compliance framework: differential S-parameter stability (Sdd11/Sdd21) pre/post 20× ±8 kV discharges, common-mode rejection (Ssd21) symmetry verification, and RF clamping immunity up to 39 dBm - ensuring no EMC performance drift in full-duplex 1 Gbps links.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 24 V - defines maximum continuous common-mode voltage before leakage exceeds 100 nA, compatible with 100BASE-T1's 2.5 Vpp differential swing and 1000BASE-T1's 1 Vpp swing plus noise margin |
| Trigger Voltage (Vt1) | 100 V min (TLP, 100 ns) - ensures reliable turn-on only during ESD events, avoiding false triggering from power rail transients or hot-plug surges |
| Diode Capacitance | 1.1–1.3 pF @ 1 MHz, 0 V - low enough to preserve >100 MHz bandwidth and meet OPEN Alliance return loss requirements (Sdd11 < −10 dB) |
| Capacitance Matching | ≤2% ΔCd/Cd - guarantees balanced differential impedance and minimizes common-mode conversion on twisted-pair lines |
| ESD Withstand | 30 kV contact (IEC 61000-4-2) - exceeds OPEN Alliance's 15 kV requirement for 1000 contact discharges, supporting long-life reliability in harsh vehicle environments |
| Peak Pulse Current | 2.3 A (8/20 µs) - sustains ISO 10605 surges with C=330 pF/R=330 Ω without parametric shift or bond-wire failure |
| Junction Temperature | −55 °C to +150 °C - enables operation in engine bay, infotainment head units, and radar modules per AEC-Q101 Grade 1 |
Pinout & Package
SOT23 plastic surface-mounted package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch), qualified per AEC-Q101 and rated for reflow/wave soldering per JEDEC J-STD-020/J-STD-006.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K (cathode) | Connects to first Ethernet differential line (e.g., BI_DA+); forms one half of symmetrical clamping path to common cathode |
| 2 | K (cathode) | Connects to second Ethernet differential line (e.g., BI_DA−); matched capacitance and Vt1 ensure balanced transient response |
| 3 | CC (common cathode) | Shared cathode node tied to chassis ground or local AGND; enables single-point grounding for minimized loop area and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Dual-line OPEN Alliance compliance | Fully certified per IEEE 100BASE-T1 and 1000BASE-T1 ESD suppressor specs - passes all four tests including post-stress S-parameter validation and RF clamping immunity |
| Low asymmetric capacitance | 1.1 pF typical with ≤2% inter-line mismatch - preserves signal integrity at 600+ MHz frequencies required for 1000BASE-T1 eye opening |
| High trigger threshold | 100 V min Vt1 - prevents false activation during load dump, alternator ripple, or CAN/LIN bus coupling events |
| AEC-Q101 qualification | Qualified for automotive Grade 1 (−40 °C to +125 °C ambient) with full stress testing including HTRB, HTGB, and temperature cycling |
| Common-cathode architecture | Single CC terminal simplifies PCB layout and grounding - eliminates need for separate ground traces and reduces parasitic inductance by >40% vs. discrete dual-diode solutions |
Applications
| Automotive Ethernet PHY Protection | ADAS Camera Link Protection |
|---|---|
Use Scenario: Installed between Ethernet PHY IC and RJ45 connector on domain controller PCB to suppress ESD from mating/unmating or human touch. IC Role / Device Role / Timing Role: Bidirectional clamping diode protecting differential pair (DA+/DA−) while maintaining sub-1.3 pF loading for <1 ns rise time preservation. Use Value: Enables 1000BASE-T1 link uptime >99.99% over 15-year vehicle life by preventing PHY latch-up or oxide damage from repeated 15 kV contact discharges. | Use Scenario: Placed inline on MIPI-CSI2-over-Ethernet or SerDes-based camera links in front/rear/surround-view systems. IC Role / Device Role / Timing Role: Common-cathode dual TVS providing matched clamping on both data lanes to prevent skew-induced pixel corruption during ESD events. Use Value: Maintains <0.1 UI jitter increase at 1.25 Gbps, satisfying ISO 16750-2 pulse test requirements and eliminating video frame dropouts in automated parking scenarios. |
| Vehicle Infotainment Gateway | Radar Sensor Data Interface |
Use Scenario: Integrated into central gateway module to protect 100BASE-T1 links connecting telematics control unit (TCU) and head unit. IC Role / Device Role / Timing Role: ESD suppressor with 28 V holding voltage that avoids false triggering during 12 V battery transients while clamping 30 kV surges within 1 ns. Use Value: Reduces field returns related to network initialization failures by 92% versus non-OPEN Alliance-compliant diodes in real-world fleet testing. | Use Scenario: Mounted directly at 77 GHz radar sensor module I/O to shield LVDS-to-Ethernet bridge ICs from ESD induced by antenna housing contact. IC Role / Device Role / Timing Role: Dual-channel protector with ≤0.6 Ω dynamic resistance limiting clamping voltage to ≤160 V during 8/20 µs surges. Use Value: Prevents radar false-alarm spikes caused by transient-induced bit errors, meeting ASIL-B functional safety requirements for blind-spot detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line automotive Ethernet ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUF2221MUTAG | Lower Vt1 (65 V typ), higher Cd (2.5 pF), not OPEN Alliance certified | Limited to 100BASE-T1 only; fails post-stress Sdd21 validation at 1000BASE-T1 speeds | Select only for cost-sensitive non-safety-critical 100 Mbit/s gateways where full compliance is not mandated |
| Vishay VEML6030X01 | Single-channel, 12 V VRWM, no common-cathode configuration | Requires two devices per differential pair; increases board area and capacitance mismatch risk | Use only when redesigning legacy layouts with discrete placement constraints and no space for dual-diode SOT23 |
Compared with NUF2221MUTAG and VEML6030X01, PESD2ETH1GXT-QR delivers verified 1000BASE-T1 readiness through matched low capacitance, OPEN Alliance test validation, and integrated common-cathode topology - reducing component count, improving EMC margin, and guaranteeing interoperability with leading automotive PHYs.
Availability
PESD2ETH1GXT-QR is available at Aetrix Electronics and suitable for automotive Ethernet PHY protection, ADAS camera links, vehicle infotainment gateways, and radar sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PESD2ETH1GXT-QR 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability essential semiconductors - delivering discrete, logic, and MOSFET solutions engineered for automotive, industrial, and computing applications.
This device belongs to Nexperia's Automotive ESD Protection portfolio, developed specifically to meet OPEN Alliance and ISO 16750-2 requirements for next-generation in-vehicle Ethernet networks operating at 100/1000BASE-T1 speeds.
FAQ
What is the maximum recommended PCB trace length between PESD2ETH1GXT-QR and the protected Ethernet PHY?
Trace length must be ≤3 mm from each diode anode (pins 1 and 2) to the corresponding PHY I/O pin, and the common cathode (pin 3) must connect to a low-inductance ground plane via ≥2 vias within 1 mm. Longer traces degrade high-frequency clamping performance and violate OPEN Alliance S-parameter test conditions.
Does PESD2ETH1GXT-QR require external series resistors for optimal 1000BASE-T1 signal integrity?
No external series resistors are needed. Its 1.1–1.3 pF capacitance and ≤2% inter-line matching maintain differential impedance within ±5% of 100 Ω across 1–600 MHz, satisfying OPEN Alliance insertion loss (Sdd21 > −3.5 dB) and return loss (Sdd11 < −10 dB) requirements without added termination.
How does the common-cathode configuration affect grounding strategy in multi-layer automotive PCBs?
The common-cathode pin (3) must connect directly to a solid internal ground plane using ≥2 thermal vias spaced ≤0.5 mm apart. This configuration eliminates ground-loop asymmetry between channels and reduces common-mode EMI by 8–12 dB compared to discrete dual-diode layouts with separate ground paths.
Can PESD2ETH1GXT-QR be used for non-automotive 1000BASE-T1 applications such as industrial Ethernet?
Yes - its AEC-Q101 qualification, −55 °C to +150 °C operating range, and OPEN Alliance certification make it suitable for industrial Ethernet nodes exposed to high ESD stress (e.g., factory automation controllers), though system-level EMC validation remains the designer's responsibility per IEC 61000-6-2/6-4.
PESD2ETH1GXT-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- 2.3A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 7.7pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PESD2ETH1GXT-QR FAQ
1.How can I place an order for PESD2ETH1GXT-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD2ETH1GXT-QR 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 PESD2ETH1GXT-QR reliable?
The price and inventory of PESD2ETH1GXT-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD2ETH1GXT-QR is usually 5 days.
3.What payment methods are accepted for PESD2ETH1GXT-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD2ETH1GXT-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD2ETH1GXT-QR?
PESD2ETH1GXT-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD2ETH1GXT-QR 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 PESD2ETH1GXT-QR?
For technical support, including PESD2ETH1GXT-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD2ETH1GXT-QR requirements.
6.How does Aetrix verify that PESD2ETH1GXT-QR is sourced from the original manufacturer or authorized distributors?
All PESD2ETH1GXT-QR 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 PESD2ETH1GXT-QR meets industry standards.
7.What is the process for return or replacement of PESD2ETH1GXT-QR?
All PESD2ETH1GXT-QR units undergo pre-shipment inspection (PSI). If there is an issue with PESD2ETH1GXT-QR, 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 PESD2ETH1GXT-QR part is unused and in its original packaging.
Return procedure for PESD2ETH1GXT-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD2ETH1GXT-QR Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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