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onsemi NSP8818MUTAG
- Part No.:
- NSP8818MUTAG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 10-UDFN Exposed Pad
- Datasheet:
-
NSP8818MUTAG.pdf
- Description:
- TVS DIODE 3VWM 15VC 10UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,620
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Product details
Overview
NSP8818MUTAG from onsemi is a unidirectional ESD and surge protection diode array designed for high-speed Ethernet signal lines (10/100/GbE), featuring 3.0 V reverse working voltage, ≤2.0 pF I/O-to-I/O capacitance, 35 A peak pulse current (8/20 µs), 10 V clamping voltage at 35 A, and UDFN10 3.5×2 mm package with flow-through routing. It protects Ethernet transceivers from IEC 61000−4−2 ±30 kV contact ESD and IEC 61000−4−5 35 A lightning surges.
For engineers reviewing the NSP8818MUTAG datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, validated 10-pin UDFN layout, real-world Ethernet protection use cases, and two confirmed alternative parts with precise technical and application distinctions.
Technical Context
The NSP8818MUTAG implements a unidirectional TVS diode array architecture with common-GND configuration, optimized for differential pair protection without signal inversion. Its low dynamic resistance (RDYN) and tight clamping response (VC = VHOLD + IPP × RDYN) ensure sub-10 ns voltage suppression during IEC 61000−4−2 ESD events.
Designed explicitly for flow-through PCB routing, it maintains matched trace lengths and controlled impedance across high-speed differential lanes. The device operates from −55°C to +125°C junction temperature and meets UL 94 V−0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage | 3.0 V - Matches DC bias of 10/100/GbE PHY interfaces without leakage-induced signal degradation |
| Clamping Voltage @ 35 A | 10 V max - Limits transient overvoltage to safe levels below Ethernet transceiver ABS MAX ratings |
| Junction Capacitance | ≤2.0 pF (I/O-to-I/O) - Minimizes signal integrity impact on 100 MHz–1.25 GHz differential lanes |
| ESD Rating | ±30 kV contact per IEC 61000−4−2 - Exceeds industrial immunity requirements for end-equipment certification |
| Surge Current | 35 A (8/20 µs) per IEC 61000−4−5 - Withstands lightning-induced surges on outdoor-facing Ethernet ports |
| Package | UDFN10 3.5×2 mm, 0.575 mm pitch - Enables compact, low-inductance layout with symmetric I/O flow-through routing |
| Operating Temperature | −55°C to +125°C - Supports deployment in industrial and automotive Ethernet gateways |
Pinout & Package
NSP8818MUTAG uses a 10-terminal UDFN package (Case 506CU) with exposed thermal pad, 3.5 mm × 2.0 mm footprint, and 0.575 mm pitch. Pin 1 is marked by chamfered corner; pins 3 and 8 are GND; all I/O pins support bidirectional signal flow in flow-through topology.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, 2, 4, 5, 6, 7, 9, 10 | I/O (Signal Path) | Eight independent protected I/O terminals arranged as four differential pairs - enables full 4-pair GbE protection in single device |
| Pin 3, Pin 8 | GND | Dedicated ground terminals - provide low-inductance return path for surge current; minimum one required, both recommended for optimal clamping |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through routing scheme | Enables straight-line PCB trace layout across differential pairs - eliminates stubs and preserves 100 Ω differential impedance |
| Low I/O-to-I/O capacitance | ≤2.0 pF - Reduces insertion loss and crosstalk in GbE channels up to 1.25 Gbps |
| IEC 61000−4−2 ±30 kV contact ESD protection | Guarantees robustness against human-body-model ESD events in factory handling and field operation |
| UL 94 V−0 flammability rating | Ensures compliance with safety standards for enclosed networking equipment and server backplanes |
| Pb-free, Halogen-free, RoHS-compliant | Meets global environmental regulations for industrial and telecom OEM production |
Applications
| 10/100 Ethernet Interfaces | Gigabit Ethernet (GbE) Ports |
|---|---|
|
Use Scenario: Protection of RJ-45 copper interfaces in industrial switches operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Unidirectional TVS array placed between magnetics and PHY IC to clamp ESD/surge transients before they reach the transceiver. Use Value: Prevents latch-up and permanent damage to 10/100BASE-TX PHYs while maintaining <0.1 dB insertion loss at 100 MHz. |
Use Scenario: Surge hardening of GbE ports on network-attached storage (NAS) units deployed in enterprise data centers. IC Role / Device Role / Timing Role: Differential pair protector on all four twisted pairs - leverages flow-through routing to avoid skew between lanes. Use Value: Sustains signal integrity up to 1.25 Gbps with <2 pF loading and clamps 35 A lightning surges to <10 V within 1 ns. |
| MagJack® Integrated Magnetics | Notebook/Desktop Ethernet Controllers |
|
Use Scenario: Integration into MagJack modules with embedded common-mode chokes for space-constrained client devices. IC Role / Device Role / Timing Role: Secondary protection stage downstream of magnetics - handles residual surges bypassing primary choke filtering. Use Value: Compact UDFN10 footprint fits within MagJack's 12.8 mm × 12.8 mm envelope while delivering full IEC 61000−4−5 compliance. |
Use Scenario: ESD safeguard for onboard Ethernet controllers in thin-and-light laptops subjected to frequent docking/undocking cycles. IC Role / Device Role / Timing Role: Frontline ESD suppressor on MDI lines - activated only during ±30 kV contact discharge events. Use Value: Eliminates need for external RC filters by combining ultra-low capacitance (≤2 pF) with fast turn-on (<1 ns) response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Ethernet surge protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSP8814MUTAG | 8-pin UDFN (2.2×2 mm); 4-channel protection; lower pin count and smaller footprint | Suitable for 10/100 Ethernet only - lacks two I/O pairs needed for full GbE 4-pair protection | Select when board space is constrained and only two differential pairs require protection |
| SP1003-01FTG | Single-channel 3.3 V TVS; SOD-323 package; 0.5 pF typical capacitance; 12 A surge rating | Requires four discrete devices for one GbE port - increases layout complexity and total capacitance vs. integrated array | Prefer for low-capacitance point-of-use protection where channel independence and thermal isolation are critical |
Compared with NSP8818MUTAG, NSP8814MUTAG reduces PCB area but sacrifices GbE readiness, while SP1003-01FTG offers lower per-channel capacitance yet demands 4× placement effort and yields higher aggregate parasitic inductance.
Availability
NSP8818MUTAG is available at Aetrix Electronics and suitable for 10/100 Ethernet switches, Gigabit Ethernet servers, and MagJack-integrated client devices requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant surge protection.
Supply support for NSP8818MUTAG 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, and IoT applications.
The NSP8818MUTAG belongs to onsemi's ESD and Surge Protection Device family, engineered specifically for high-speed data line hardening - prioritizing low capacitance, fast clamping, and flow-through routing to preserve signal integrity in Ethernet, USB, and HDMI interfaces.
FAQ
What is the maximum clamping voltage of NSP8818MUTAG under IEC 61000−4−5 35 A surge conditions?
The NSP8818MUTAG clamps to a maximum of 10 V at 35 A (8/20 µs pulse), calculated as VC = VHOLD + (IPP × RDYN). This value is measured I/O-to-GND and ensures Ethernet PHY ICs remain within their absolute maximum voltage ratings during lightning-surge events. The clamping performance is validated per Figure 3 in the official onsemi datasheet.
Does NSP8818MUTAG support bidirectional signal paths or is it strictly unidirectional?
NSP8818MUTAG is a unidirectional TVS array - its internal structure connects anode to GND and cathode to I/O, enabling protection only against positive transients on I/O lines relative to GND. It does not protect against negative excursions beyond −0.85 V forward drop. For bidirectional protection, a separate complementary device or dual-rail design is required.
Can NSP8818MUTAG be used to protect USB 3.0 or HDMI signals?
No - NSP8818MUTAG is characterized and qualified exclusively for 10/100/GbE applications. Its 3.0 V VRWM and 10 V clamping are aligned with Ethernet PHY voltage rails, not USB 3.0 (3.3 V tolerant) or HDMI (5 V hot-plug detect). Capacitance (≤2.0 pF) is suitable, but ESD waveform response and failure modes have not been validated for those protocols.
What is the thermal pad requirement for NSP8818MUTAG's UDFN10 package?
The NSP8818MUTAG UDFN10 package includes an exposed thermal pad (pin 0) that must be soldered to a dedicated PCB thermal land for reliable power dissipation during surge events. Per onsemi's mounting footprint, the pad area should match the 2.3 mm × 1.1 mm exposed Cu region, with ≥4 thermal vias (0.3 mm diameter) connecting to inner ground planes to maintain junction temperature ≤125°C under repeated 35 A pulses.
How many differential pairs can a single NSP8818MUTAG protect?
A single NSP8818MUTAG protects four differential pairs - its eight I/O pins (pins 1,2,4,5,6,7,9,10) are configured as four independent signal paths, each with dedicated GND return via pins 3 and 8. This matches the four twisted pairs in 1000BASE-T GbE, enabling full-port protection with one device and no inter-pair coupling.
NSP8818MUTAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 10-UDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 8
- 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:
- 5pF @ 1MHz (Max)
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-UDFN (3.5x2)
NSP8818MUTAG FAQ
1.How can I place an order for NSP8818MUTAG through Aetrix?
Please submit a Request for Quotation (RFQ) for NSP8818MUTAG 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 NSP8818MUTAG reliable?
The price and inventory of NSP8818MUTAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NSP8818MUTAG is usually 5 days.
3.What payment methods are accepted for NSP8818MUTAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NSP8818MUTAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NSP8818MUTAG?
NSP8818MUTAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NSP8818MUTAG 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 NSP8818MUTAG?
For technical support, including NSP8818MUTAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NSP8818MUTAG requirements.
6.How does Aetrix verify that NSP8818MUTAG is sourced from the original manufacturer or authorized distributors?
All NSP8818MUTAG 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 NSP8818MUTAG meets industry standards.
7.What is the process for return or replacement of NSP8818MUTAG?
All NSP8818MUTAG units undergo pre-shipment inspection (PSI). If there is an issue with NSP8818MUTAG, 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 NSP8818MUTAG part is unused and in its original packaging.
Return procedure for NSP8818MUTAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NSP8818MUTAG 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
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