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onsemi SZNSP8814MUTAG
- Part No.:
- SZNSP8814MUTAG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
SZNSP8814MUTAG.pdf
- Description:
- TVS DIODE 3VWM 15VC 8-UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,649
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Product details
Overview
SZNSP8814MUTAG from onsemi is a unidirectional ESD and surge protection diode array designed for high-speed Ethernet signal lines (10/100/GbE). It features 3.0 V reverse working voltage, ≤2.0 pF I/O-to-I/O capacitance, ±30 kV IEC 61000−4−2 contact ESD protection, 35 A IEC 61000−4−5 (8/20 µs) peak pulse current capability, and clamps to ≤10 V at 35 A - enabling robust protection of voltage-sensitive Ethernet transceivers without degrading signal integrity.
For engineers reviewing the SZNSP8814MUTAG datasheet, pinout, applications, or equivalent options, key selection criteria include low-capacitance flow-through routing for differential pair layout, GND-referenced unidirectional clamping behavior, IEC-compliant surge survivability, and UDFN8 package compatibility with high-density PCB designs.
Technical Context
The SZNSP8814MUTAG implements a monolithic silicon avalanche diode array in a common-GND configuration, with four independent I/O channels each rated for 3.0 V VRWM and optimized for bidirectional signal paths requiring unidirectional protection to ground. Its low dynamic resistance (RDYN) ensures tight clamping across 1–35 A surge currents, while its sub-2 pF I/O-to-I/O capacitance preserves impedance matching on 100 Ω differential Ethernet traces.
This device operates within −55°C to +125°C junction temperature range and supports reflow soldering up to 260°C. The UDFN8 package enables flow-through PCB routing - critical for maintaining matched trace lengths and consistent differential impedance in 10/100/GbE applications - and integrates UL 94 V−0 flammability compliance and RoHS/lead-free/halogen-free construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 3.0 V - sets maximum continuous DC bias before leakage rise; matches typical Ethernet PHY supply rails and common-mode voltage limits. |
| I/O-to-I/O Capacitance (CJ) | ≤2.0 pF @ 1 MHz - minimizes signal distortion and insertion loss on high-speed differential pairs (e.g., 100BASE-TX, 1000BASE-T). |
| ESD Protection Level | ±30 kV contact per IEC 61000−4−2 - exceeds industrial immunity requirements and protects against human-body-model discharges. |
| Surge Current Rating | 35 A (8/20 µs) per IEC 61000−4−5 - handles lightning-induced surges on Ethernet ports without failure. |
| Clamping Voltage (VC) | ≤10 V @ 35 A - limits transient overvoltage seen by downstream PHY ICs, preventing latch-up or oxide damage. |
| Package | UDFN8 (2.2 × 2.0 mm, 0.575 mm pitch) - enables compact, flow-through PCB layout with minimal stub length and symmetric routing. |
| Operating Temperature | −55°C to +125°C - supports deployment in extended-temperature industrial and telecom equipment environments. |
Pinout & Package
Package: UDFN8 (Case 506CV), 2.2 mm × 2.0 mm body, 0.575 mm pitch, exposed thermal pad, Pb-free/RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, Pin 4, Pin 5, Pin 8 | GND | Common cathode connection for all four protection channels; minimum one GND connection required for functional operation. |
| Pin 2, Pin 3, Pin 6, Pin 7 | I/O | Four independent anode terminals - each connects to one Ethernet differential line (e.g., TX+, TX−, RX+, RX−) for unidirectional clamping to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through routing architecture | Enables straight-through PCB trace layout across all four I/O pins, preserving differential pair symmetry and minimizing impedance discontinuities. |
| Low I/O-to-I/O capacitance | ≤2.0 pF ensures <0.1 dB insertion loss at 100 MHz and maintains signal fidelity for 100BASE-TX and 1000BASE-T applications. |
| IEC 61000−4−2/−4−5 certified protection | Validated to ±30 kV contact ESD and 35 A lightning surge - eliminates need for external TVS staging in cost-sensitive Ethernet port designs. |
| UL 94 V−0 flammability rating | Meets safety standards for enclosure-integrated Ethernet interfaces in commercial and industrial networking hardware. |
| Pb-free, halogen-free, RoHS-compliant | Supports global environmental compliance requirements and lead-free reflow assembly without reliability compromise. |
Applications
| 10/100BASE-TX Ethernet Ports | Gigabit Ethernet (1000BASE-T) Interfaces |
|---|---|
Use Scenario: Protecting RJ-45 connector lines in desktop PCs, switches, and IP cameras operating at 100 Mbps full-duplex. IC Role / Device Role / Timing Role: Unidirectional clamping diode array placed between magnetics and PHY IC to suppress ESD and surge transients on TX+/TX−/RX+/RX− lines. Use Value: Prevents PHY latch-up during ±8 kV IEC 61000−4−2 contact discharge while maintaining <100 ps skew between differential pairs due to matched pin capacitance. |
Use Scenario: Securing high-speed 1000BASE-T ports in enterprise routers and NAS devices where signal integrity and surge resilience are co-critical. IC Role / Device Role / Timing Role: Low-capacitance transient voltage suppressor integrated into MagJack® footprint to clamp common-mode surges without degrading return loss above 62.5 MHz. Use Value: Enables >35 dB return loss at 100 MHz and meets IEEE 802.3ab immunity requirements with single-device protection per differential pair. |
| Industrial Ethernet Controllers | Notebook/Laptop Onboard Ethernet |
Use Scenario: Hardening EtherCAT or PROFINET interfaces in factory automation controllers exposed to harsh EMI and lightning-prone environments. IC Role / Device Role / Timing Role: Surge protection element mounted directly at board edge before isolation magnetics, referenced to system GND plane. Use Value: Survives repeated 35 A (8/20 µs) surges without parameter shift, ensuring long-term reliability in unattended industrial deployments. |
Use Scenario: Integrated Ethernet PHY protection in space-constrained laptop motherboards where thermal and layout density are limiting factors. IC Role / Device Role / Timing Role: Compact UDFN8 ESD array replacing discrete diodes to reduce BOM count and PCB area while meeting USB-C adjacent port ESD requirements. Use Value: Saves ≥3.5 mm² board area versus quad-SOD-323 solution and supports automated placement with standard 0402 feeders. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD and surge protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP3052-01UTG | Bi-directional configuration; 5.5 V VRWM; 0.3 pF I/O-to-GND capacitance; lower surge rating (12 A, 8/20 µs). | Better suited for low-voltage USB 2.0 or HDMI lines where bidirectional clamping is required and lower VRWM is acceptable. | Select SP3052-01UTG only if bidirectional protection and ultra-low capacitance (<0.5 pF) outweigh need for 35 A surge handling. |
| TPD4E05U06DQAR | Unidirectional; 5.5 V VRWM; 0.5 pF I/O-to-GND; 4 A (8/20 µs); 0402 DFN package. | Targeted at portable electronics with tighter voltage margins and lower surge exposure (e.g., consumer IoT gateways). | Choose TPD4E05U06DQAR when VRWM >5 V is permissible and surge threat level is limited to ESD-only environments. |
Compared with SP3052-01UTG and TPD4E05U06DQAR, SZNSP8814MUTAG delivers higher surge current handling (35 A vs. ≤12 A), optimal VRWM alignment with 3.3 V Ethernet PHYs, and flow-through routing - making it the preferred choice for infrastructure-grade wired Ethernet protection where both ESD and lightning-level transients must be suppressed.
Availability
SZNSP8814MUTAG is available at Aetrix Electronics and suitable for 10/100/GbE Ethernet port hardening, industrial controller interface protection, and notebook onboard LAN applications requiring stable component supply, long-lifecycle support, and verified surge performance.
Supply support for SZNSP8814MUTAG 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.
SZNSP8814MUTAG belongs to onsemi's ESD and Surge Protection Device family, engineered specifically for high-speed data line protection - balancing ultra-low capacitance, fast response time, and high-energy surge survivability in compact surface-mount packages.
FAQ
What is the primary circuit role of SZNSP8814MUTAG in an Ethernet design?
SZNSP8814MUTAG serves as a unidirectional ESD and surge protection diode array placed between Ethernet magnetics and the PHY IC. It clamps transient overvoltages on TX+/TX−/RX+/RX− differential lines to ground, limiting peak voltage to ≤10 V during 35 A surges while adding ≤2.0 pF capacitance - thereby safeguarding voltage-sensitive transceiver inputs without compromising signal integrity.
Does SZNSP8814MUTAG support bidirectional signal paths like 1000BASE-T?
Yes, SZNSP8814MUTAG supports bidirectional high-speed data transmission (e.g., 1000BASE-T) because it uses a unidirectional clamping architecture referenced to GND - allowing AC-coupled differential signals to pass freely in both directions while suppressing positive transients on each line. Its ≤2.0 pF I/O-to-I/O capacitance ensures minimal impact on return loss and jitter.
Can SZNSP8814MUTAG replace discrete TVS diodes in existing Ethernet layouts?
Yes, SZNSP8814MUTAG is designed as a drop-in replacement for quad-discrete TVS solutions in Ethernet port protection. Its UDFN8 flow-through pinout (I/O–I/O–I/O–I/O–GND–GND–I/O–I/O) enables direct substitution with no PCB redesign - maintaining matched trace lengths and eliminating stubs that cause impedance mismatch in traditional "L-shaped" discrete layouts.
What is the maximum allowable operating temperature for SZNSP8814MUTAG?
SZNSP8814MUTAG has a specified operating junction temperature range of −55°C to +125°C. This allows reliable deployment in extended-temperature environments such as industrial Ethernet switches, outdoor telecom cabinets, and automotive infotainment gateways - provided thermal design accounts for power dissipation during surge events and steady-state leakage.
How does SZNSP8814MUTAG achieve low capacitance while maintaining high surge capability?
SZNSP8814MUTAG achieves ≤2.0 pF I/O-to-I/O capacitance through optimized silicon geometry and low-parasitic UDFN8 packaging, while sustaining 35 A surge current via monolithic avalanche diode structures with low dynamic resistance (RDYN). The combination enables effective clamping (≤10 V at 35 A) without introducing signal degradation - a balance validated across IEC 61000−4−2, −4−5, and TLP testing.
SZNSP8814MUTAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 8-UDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3V (Max)
- Voltage - Breakdown (Min):
- 3.2V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 35A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- Ethernet
- Capacitance @ Frequency:
- 1.5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2.2x2)
SZNSP8814MUTAG FAQ
1.How can I place an order for SZNSP8814MUTAG through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNSP8814MUTAG 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 SZNSP8814MUTAG reliable?
The price and inventory of SZNSP8814MUTAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNSP8814MUTAG is usually 5 days.
3.What payment methods are accepted for SZNSP8814MUTAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNSP8814MUTAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNSP8814MUTAG?
SZNSP8814MUTAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNSP8814MUTAG 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 SZNSP8814MUTAG?
For technical support, including SZNSP8814MUTAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNSP8814MUTAG requirements.
6.How does Aetrix verify that SZNSP8814MUTAG is sourced from the original manufacturer or authorized distributors?
All SZNSP8814MUTAG 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 SZNSP8814MUTAG meets industry standards.
7.What is the process for return or replacement of SZNSP8814MUTAG?
All SZNSP8814MUTAG units undergo pre-shipment inspection (PSI). If there is an issue with SZNSP8814MUTAG, 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 SZNSP8814MUTAG part is unused and in its original packaging.
Return procedure for SZNSP8814MUTAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZNSP8814MUTAG Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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