Industry-Verified Manufacturing Data (2026)

Network Interface Card

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Network Interface Card used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Network Interface Card is characterized by the integration of Controller Chip and PHY (Physical Layer) Transceiver. In industrial production environments, manufacturers listed on CNFX commonly emphasize Printed Circuit Board (PCB) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A hardware component that enables a computer to connect to a network and communicate with other devices.

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Product Specifications

Technical details and manufacturing context for Network Interface Card

Definition
Within a User Interface Station, the Network Interface Card serves as the critical communication interface that allows the station to connect to local area networks (LANs), wide area networks (WANs), or the internet. It facilitates data transmission and reception between the station's central processing unit and the network infrastructure, enabling access to shared resources, servers, and other networked devices essential for the station's operation.
Working Principle
The NIC converts data from the computer into electrical signals suitable for transmission over network cables (or radio waves for wireless NICs) according to specific network protocols (e.g., Ethernet). It receives incoming signals, converts them back into digital data the computer can process, and manages data flow to prevent collisions and ensure reliable communication.
Common Materials
Printed Circuit Board (PCB), Integrated Circuits (ICs/Chips), Connector (e.g., RJ-45)
Technical Parameters
  • Data transfer rate (e.g., 1 Gbps, 10 Gbps) (Gbps) Customizable
Components / BOM
  • Controller Chip
    Manages data transmission, protocol handling, and communication with the computer's bus.
    Material: Semiconductor (Silicon)
  • PHY (Physical Layer) Transceiver
    Converts digital data to analog signals for cable transmission and vice-versa.
    Material: Integrated Circuit
  • Boot ROM Socket
    Holds firmware (e.g., for PXE boot) that allows network-based startup.
    Material: Plastic, Metal Contacts
  • LED Indicators
    Provide visual status for link activity and network speed.
    Material: LED (Light Emitting Diode), Plastic Lens
Engineering Reasoning
0-70°C ambient temperature, 0-95% relative humidity (non-condensing), 4.75-5.25V DC power input
85°C junction temperature for silicon components, 1000V electrostatic discharge threshold, 150°C solder reflow temperature limit
Design Rationale: Electromigration in copper traces at current densities exceeding 10^6 A/cm², dielectric breakdown at electric fields >10 MV/m in SiO₂ insulation, thermal expansion mismatch between silicon (2.6 ppm/°C) and FR-4 substrate (14 ppm/°C)
Risk Mitigation (FMEA)
Trigger Electrostatic discharge exceeding 1000V HBM (Human Body Model)
Mode: Gate oxide breakdown in PHY transceiver IC, creating permanent short circuit
Strategy: Integrated ESD protection diodes with 5ns response time, chassis grounding at <1Ω resistance
Trigger Sustained current draw exceeding 1.5A through 24AWG copper traces
Mode: Copper trace delamination from FR-4 substrate due to 150°C localized heating
Strategy: Current limiting circuitry with 100ms response, 2oz copper plating (70μm thickness) on PCB

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Network Interface Card.

PCIe network interface card for servers gigabit Ethernet NIC with RJ-45 connector industrial network card with boot ROM socket high-speed NIC with LED status indicators enterprise network interface card with PHY transceiver

Applied To / Applications

This component is essential for the following industrial systems and equipment:

User Interface Station
View system integration details
DICOM Interface Module
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (electronic component)
other spec: Humidity: 10% to 90% non-condensing, Power: 3.3V/5V DC ±5%
temperature: 0°C to 70°C (operating), -40°C to 85°C (storage)
Media Compatibility
✓ Standard Ethernet networks (Cat5e/Cat6/Cat6a) ✓ Fiber optic networks (SFP/SFP+ modules) ✓ Industrial Ethernet protocols (Profinet, EtherNet/IP)
Unsuitable: High-voltage electrical environments without proper isolation
Sizing Data Required
  • Network speed requirement (e.g., 1Gbps, 10Gbps, 25Gbps)
  • Interface type (PCIe generation/slot type, form factor)
  • Network protocol compatibility (TCP/IP offload, RDMA support)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal degradation
Cause: Excessive heat buildup due to poor ventilation, dust accumulation, or high ambient temperatures leading to solder joint failure, component warping, or semiconductor breakdown.
Electrical overstress
Cause: Voltage spikes from power supply issues, electrostatic discharge (ESD) during handling, or improper grounding causing damage to integrated circuits, capacitors, or connectors.
Maintenance Indicators
  • Intermittent or complete loss of network connectivity despite functional cables and switches
  • Abnormal LED behavior (e.g., no lights, constant flashing when idle, or mismatched activity/status indicators)
Engineering Tips
  • Implement regular cleaning of card slots and heatsinks using compressed air to prevent dust-induced overheating and corrosion
  • Use ESD-safe procedures during installation/replacement and ensure proper chassis grounding to protect sensitive electronics from static discharge

Compliance & Manufacturing Standards

Reference Standards
ISO/IEC 11801: Information technology - Generic cabling for customer premises ANSI/TIA-568.2-D: Balanced Twisted-Pair Telecommunications Cabling and Components Standards CE Marking (EU Directive 2014/35/EU) for Low Voltage Equipment
Manufacturing Precision
  • Connector Pin Alignment: +/-0.15mm
  • PCB Trace Width: +/-10% of nominal value
Quality Inspection
  • Signal Integrity Test (Eye Diagram Analysis)
  • Electromagnetic Compatibility (EMC) Radiated Emissions Test

Factories Producing Network Interface Card

Verified manufacturers with capability to produce this product in China

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✓ 92% Supplier Capability Match Found

P Project Engineer from United States Feb 26, 2026
★★★★★
"Reliable performance in harsh Computer, Electronic and Optical Product Manufacturing environments. No issues with the Network Interface Card so far."
Technical Specifications Verified
S Sourcing Manager from United Arab Emirates Feb 23, 2026
★★★★★
"Testing the Network Interface Card now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
P Procurement Specialist from Australia Feb 20, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

11 sourcing managers are analyzing this specification now. Last inquiry for Network Interface Card from UAE (39m ago).

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Frequently Asked Questions

What is the primary function of a Network Interface Card?

A Network Interface Card (NIC) enables a computer to connect to a network, facilitating communication with other devices by converting data into signals suitable for network transmission.

What materials are commonly used in manufacturing Network Interface Cards?

Network Interface Cards are typically constructed using Printed Circuit Boards (PCBs), Integrated Circuits (ICs/chips) like controller chips and PHY transceivers, and connectors such as RJ-45 for Ethernet connections.

What are the key components in a Network Interface Card's Bill of Materials?

Essential components include a controller chip for data processing, a PHY transceiver for signal conversion, a boot ROM socket for firmware storage, and LED indicators for network status monitoring.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Computer, Electronic and Optical Product Manufacturing sector.

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