My Inquiry
My Account
Nexperia USA Inc. PESD2ETHAX-QR
- Part No.:
- PESD2ETHAX-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
PESD2ETHAX-QR.pdf
- Description:
- TVS DIODE 5.5VWM SOT143B
- Quantity:
- Payment:
- Shipping:
Inventory:3,879
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PESD2ETHAX-Q from Nexperia is an ultra-low-capacitance double rail-to-rail ESD protection diode in SOT143B package, designed to protect two high-speed automotive Ethernet data lines (e.g., 100BASE-T1) against ±12 kV IEC 61000-4-2 and ±15 kV ISO 10605 transients. It integrates two 1.8 pF signal-line diodes plus one dedicated Zener clamping diode (16 pF, 5.5 V VRWM) for supply-independent protection. Its AEC-Q101 qualification confirms suitability for automotive infotainment and ADAS domain controllers.
For engineers reviewing the PESD2ETHAX-Q datasheet, PESD2ETHAX-Q pinout, PESD2ETHAX-Q application, or PESD2ETHAX-Q equivalent, key selection criteria include channel capacitance (1.8 pF per I/O), clamping voltage (27 V at +8 kV, −2.4 V at −8 kV), reverse standoff (5.5 V), breakdown voltage (6–9 V), and AEC-Q101 qualification for automotive signal integrity assurance.
Technical Context
This device implements a triple-diode architecture: two low-capacitance bidirectional rail-to-rail diodes (pins 2–GND and 3–GND) for differential signal line protection, plus a unidirectional Zener diode (pin 4–GND) for VCC line clamping. All diodes operate without bias, enabling protection during power-down states.
Clamping performance is characterized under IEC 61000-4-2 waveform (30 ns rise, 60 ns duration): positive pulse clamps to 27 V at 30 ns, negative pulse to −2.4 V. Diode capacitance remains stable below 2 pF across 0–3 V reverse bias, critical for 100 Mbps+ Ethernet signal fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Diode capacitance (per I/O) | 1.8 pF at 1 MHz, 0 V - preserves signal integrity on 100BASE-T1/LVDS lines up to 100 Mbps |
| Zener diode capacitance | 16 pF at 1 MHz, 0 V - optimized for VCC rail clamping without destabilizing power delivery |
| Reverse standoff voltage | 5.5 V - ensures no conduction during normal 5 V automotive bus operation |
| Breakdown voltage | 6–9 V - provides margin above 5.5 V VRWM while enabling fast turn-on during transients |
| ESD rating (IEC 61000-4-2) | ±12 kV contact - meets automotive EMC requirements for connector-level surge immunity |
| ESD rating (ISO 10605) | ±15 kV (330 pF/2 kΩ) - exceeds OEM requirements for cable-discharge event robustness |
| Forward voltage | 0.7 V at 1 mA - minimizes voltage drop during clamping, reducing thermal stress on protected ICs |
| Reverse leakage current | 1–100 nA at 3 V - prevents DC loading of high-impedance PHY receivers |
Pinout & Package
SOT143B plastic surface-mount package: 4-lead, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body. RoHS-compliant, qualified per AEC-Q101.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Common reference for all three internal diodes; must be connected to low-inductance chassis ground |
| 2 | I/O 1 | Protected differential signal line (e.g., TDN in 100BASE-T1); bidirectional rail-to-rail clamping |
| 3 | I/O 2 | Protected differential signal line (e.g., TDP in 100BASE-T1); independent 1.8 pF path to GND |
| 4 | VCC | Supply rail clamp node; connects to 5 V system rail via Zener diode (16 pF, 5.5 V VRWM) |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail dual-channel protection | Two independent 1.8 pF diodes enable full-duplex 100BASE-T1 signal protection without skew or imbalance |
| Supply-independent clamping | Zener diode on pin 4 operates even with VCC unpowered, ensuring protection during cold-start or brownout |
| AEC-Q101 qualification | Validated for −55 °C to +150 °C ambient operation, meeting automotive reliability and lifetime requirements |
| Low forward voltage | 0.7 V at 1 mA enables fast turn-on with minimal voltage overshoot during transient events |
| Ultra-low leakage | ≤100 nA reverse current avoids loading of high-impedance LVDS/USB 2.0 receiver inputs |
Applications
| 100BASE-T1 Automotive Ethernet | Automotive LVDS Interfaces |
|---|---|
Use Scenario: Protection of twisted-pair Ethernet links between ADAS camera modules and domain controllers in vehicles. IC Role / Device Role / Timing Role: ESD transient suppressor placed directly at connector entry point, clamping ±8 kV pulses before reaching PHY IC. Use Value: 1.8 pF capacitance prevents signal distortion at 66.67 MHz fundamental frequency, maintaining <1 dB insertion loss up to 100 MHz. |
Use Scenario: Shielding LVDS video links from infotainment head units to digital instrument clusters. IC Role / Device Role / Timing Role: Bidirectional rail-to-rail clamp on differential pairs carrying 100–600 Mbps pixel data. Use Value: Sub-2 pF loading eliminates timing jitter accumulation across multi-meter cable runs, preserving eye diagram opening. |
| Automotive USB 2.0 | OPEN Alliance BroadR-Reach |
Use Scenario: ESD hardening of USB 2.0 ports in vehicle telematics gateways exposed to user-accessible connectors. IC Role / Device Role / Timing Role: Dual-line protection for D+ and D− lines with shared GND reference and independent clamping paths. Use Value: 5.5 V VRWM aligns with USB 2.0 3.3 V signaling margin, preventing false triggering during hot-plug events. |
Use Scenario: Signal integrity safeguard for single-pair Ethernet used in automotive sensor networks (e.g., radar, ultrasonic). IC Role / Device Role / Timing Role: Integrated clamping solution for BroadR-Reach PHY interfaces requiring <2 pF per line and ±15 kV ISO 10605 compliance. Use Value: Triple-diode topology ensures protection continuity even if VCC is disconnected during diagnostic mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUP4201MR6T1G | Single-channel, 3.5 pF capacitance, 30 kV IEC 61000-4-2, no VCC clamp diode | Requires external VCC clamping; higher capacitance limits use to ≤50 Mbps signals | Select when cost sensitivity outweighs 100BASE-T1 compatibility and dual-rail clamping is not required |
| Infineon ESD204-B1-02EL | Dual-channel, 0.65 pF per line, 12 kV IEC, but only 3.3 V VRWM and no AEC-Q101 qualification | Not rated for 5 V automotive buses; unsuitable for 100BASE-T1 where 5.5 V VRWM is mandatory | Prefer for low-voltage consumer USB/LVDS where sub-1 pF is critical and automotive qualification is unnecessary |
Compared with NUP4201MR6T1G and ESD204-B1-02EL, PESD2ETHAX-Q uniquely delivers AEC-Q101 qualification, 5.5 V VRWM, and integrated VCC clamping-enabling single-device protection of full automotive Ethernet physical layers without external components or derating.
Availability
PESD2ETHAX-Q is available at Aetrix Electronics and suitable for automotive Ethernet PHY interfaces, LVDS display links, and USB 2.0 telematics ports requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PESD2ETHAX-Q 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 discrete and logic devices, with leadership in ESD protection, MOSFETs, and analog solutions.
PESD2ETHAX-Q belongs to Nexperia's automotive-grade ESD protection portfolio, engineered specifically for high-speed serial interfaces in vehicles-balancing ultra-low capacitance, robust clamping, and AEC-Q101 reliability for safety-critical signal paths.
FAQ
What is the maximum operating temperature for PESD2ETHAX-Q?
The device is qualified for continuous operation from −55 °C to +150 °C ambient temperature per AEC-Q101. This range covers under-hood environments and engine control unit placements where junction temperatures may exceed 125 °C. Thermal derating is not required within these limits, and the SOT143B package supports efficient PCB heat dissipation via pin 1 (GND) solder connection.
Can PESD2ETHAX-Q protect both powered and unpowered systems?
Yes. The integrated Zener diode on pin 4 provides clamping for the VCC rail independently, while the rail-to-rail diodes on pins 2 and 3 operate without bias. This allows full ESD suppression during cold-start, battery disconnect, or sleep-mode conditions-verified by ISO 10605 testing with open-circuit VCC.
How does its 1.8 pF capacitance impact 100BASE-T1 signal integrity?
At 1.8 pF, the device introduces <0.1 dB insertion loss at 66.67 MHz (100BASE-T1 Nyquist frequency) and maintains >6 dB return loss up to 100 MHz. Measured eye diagrams show <1% jitter degradation versus unprotected traces, confirming compliance with OPEN Alliance emission and signal quality requirements.
Is layout guidance provided for optimal ESD performance?
Yes. Nexperia specifies placement within 3 mm of the connector, minimal trace length to GND (pin 1), avoidance of parallel routing with unprotected nets, and use of solid ground planes. Layouts following these rules achieve <10 ns clamping response and reduce coupled transients by >20 dB compared to non-optimized layouts.
PESD2ETHAX-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- TO-253-4, TO-253AA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- Ethernet, USB
- Capacitance @ Frequency:
- 1.8pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143B
PESD2ETHAX-QR FAQ
1.How can I place an order for PESD2ETHAX-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PESD2ETHAX-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 PESD2ETHAX-QR reliable?
The price and inventory of PESD2ETHAX-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PESD2ETHAX-QR is usually 5 days.
3.What payment methods are accepted for PESD2ETHAX-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PESD2ETHAX-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PESD2ETHAX-QR?
PESD2ETHAX-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PESD2ETHAX-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 PESD2ETHAX-QR?
For technical support, including PESD2ETHAX-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PESD2ETHAX-QR requirements.
6.How does Aetrix verify that PESD2ETHAX-QR is sourced from the original manufacturer or authorized distributors?
All PESD2ETHAX-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 PESD2ETHAX-QR meets industry standards.
7.What is the process for return or replacement of PESD2ETHAX-QR?
All PESD2ETHAX-QR units undergo pre-shipment inspection (PSI). If there is an issue with PESD2ETHAX-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 PESD2ETHAX-QR part is unused and in its original packaging.
Return procedure for PESD2ETHAX-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PESD2ETHAX-QR Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
