Xelivor Xelivor

OEM/ODM Flex RJ45 Connector Manufacturers & Supplier

High-Density Ethernet Connectivity, Custom Impedance-Matched Assemblies, and Dynamic Signal Integrity Solutions for Telecommunication and High-Speed Computing.

Premium Interconnect & Ethernet Port Solutions

Explore our leading collection of low-profile, integrated magnetics, and shielded SFP assemblies engineered for strict industrial and telecom standards.

L829-1J1T-43 Low Profile 8P8C RJ45 Connector
L829-1J1T-43 L829-1J1T-43-F J0G-0009NL 1000 Base-T Low Profile 8P8C RJ 45 Connectors
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LPJE101AHNL Through Hole Short RJ45 Connector
LPJE101AHNL Single Port Without Magnetics Through Hole MagJack Short RJ45 Connector
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SMT RJ45 Modular Jack J3011G21DNL
SMT RJ45 Modular Jack J3011G21DNL
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Shielded Magnetic Dual Ports RJ-45 Connector
Shielded Magnetic Dual Ports RJ-45 Connector 1840538-3 6610128-1 1840538-4 1840538-2
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USB RJ45 Mag-jack HR872635H
One Port With USB RJ 45 Mag-jack HR872635H HR981121C
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TE Compatible SFP Cage Assembly 1888424-1
1888424-1 TE Compatible Through Hole EMI Shielded Housing 1x2 Ports Press-Fit SFP Cage Assembly
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TE Compatible 2x2 Ports SFP Cage 2007637-4
2007637-4 TE Compatible Through Hole 80P 2x2 Ports Press-Fit EMI Shielded SFP+ Cage With Connector
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Top Entry Female Ethernet Socket RJ11 Jack
Top Entry Female Ethernet Socket 1 Port Unshielded Vertical 4P4C RJ11 Connector Jack
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Industrial Whitepaper: Understanding Flex RJ45 Connector Architectures

An in-depth analysis of modern signal integrity, high-speed routing constraints, and the mechanical advantages of flexible board-to-board copper terminations.

Optimized Signal Integrity

Modern telecommunication channels operating at Multi-Gigabit Ethernet rates (2.5G, 5G, and 10G Base-T) demand ultra-low crosstalk and return loss. Flex RJ45 connectors solve routing congestion, ensuring impedance matches (100 ohms differential) across micro-vias and flexible PCB tracks.

EMI/RFI Shielding & Mitigation

Integrated MagJacks (RJ45 with internal magnetic components) isolate digital logic from external EMI. Utilizing brass and copper-alloy shields with multi-point grounding tabs ensures 360-degree protection, vital for harsh industrial environments.

Mechanical Compliance & Stress Relief

Rigid connectors often suffer solder joint fatigue due to thermal expansion and mechanical vibration. A flex-configured RJ45 interface absorbs micro-stresses, preserving electrical contact under extreme operational cycles.

The Shift to Flex RJ45 Terminations in Next-Generation Equipment

As standard PCB real estate shrinks inside IoT gateways, server blades, and edge AI compute systems, system designers cannot afford the routing footprints required by traditional copper connections. By utilizing Flex RJ45 connectors (which combine flexible printed circuit cables or flexible leads with robust modular jack housings), engineers can route high-speed Ethernet signals away from components generating massive heat, such as CPUs and GPUs. This isolation reduces thermal load on sensitive ethernet magnetic modules, enhancing overall system longevity.

Design Tip: When designing high-frequency circuits, ensure the transition between the rigid motherboard and the flexible RJ45 lead preserves a uniform ground reference plane to prevent impedance discontinuities, which can degrade packet delivery speeds on 10GBASE-T lines.

Global Commercial & Industrial Landscape

Analyzing supply chain dynamics, regional regulatory compliance, and localized application demands for flexible network interfaces.

The global market for Ethernet interconnects is undergoing a rapid evolution. Industrial Automation, Edge Computing, and Smart Cities require connectors that exceed basic IEEE 802.3 standards. In North America and Europe, stringent compliance requirements (like UL certification, RoHS, REACH, and FCC Part 68) drive demand for highly shielded, magnetically isolated solutions. Meanwhile, APAC serves as the manufacturing powerhouse, where speed-to-market and cost efficiency must meet advanced R&D engineering standards.

Additionally, the rising integration of Power over Ethernet (PoE, PoE+, and PoE++ up to 90W) means these flexible connectors must carry higher currents without thermal runaways. Contact plating is now standardized to 50 micro-inches of gold over nickel to counter contact degradation and oxide layer formation under heavy current loads and moisture.

Standard Parameters Standard RJ45 Connectors High-Performance Flex RJ45 Connectors SFP/SFP+ Cage Systems
Bandwidth Limit Up to 1 Gbps (Cat5e/Cat6) Up to 10 Gbps (Cat6a/Cat7/Cat8) Up to 28 Gbps (Direct Copper/Optical)
Vibration Immunity Low (Solder fatigue prone) High (Flex lead absorbs mechanical force) Medium (Depends on latching system)
Integrated Magnetics Optional (Often separate ICs) Standard (MagJack technology) No (External PHY or optical module)
Thermal Management Poor (Heat transfers to motherboard) Excellent (Isolated routing possible) Good (Leverages chassis ventilation)

Technological Roadmap & Future Outlook (2025–2030)

Anticipating the demands of autonomous industrial plants, smart transportation networks, and next-generation data centers.

Single Pair Ethernet (SPE)

SPE reduces wire counts to a single pair while delivering Power over Data Line (PoDL). We are developing flex-hybrid RJ45 designs to ease the transition from legacy 4-pair systems to sleek, cost-efficient SPE configurations.

AI-Assisted Signal Integrity

Future iterations of our flex assemblies utilize machine learning simulation models. By predicting copper trace degradation over millions of micro-bends, we configure physical layers to extend hardware lifespans.

Environmentally Sealed Flex

For applications in outdoor telecom stations and smart agriculture, we are developing flex designs with IP67/IP68 rating parameters. These prevent moisture ingress without increasing the connector's height profile.

Manufacturing Capabilities & Supply Chain Prowess

Xelivor Optoelectronics Co., Ltd. — Your trusted partner for high-speed fiber connectivity, active transceivers, and precision custom RJ45 configurations.

Xelivor Optoelectronics Co., Ltd. is a professional manufacturer of optical transceivers and fiber connectivity solutions, dedicated to serving global data center, telecom, enterprise network, and cloud computing industries. Established in 2016, the company operates from a modern manufacturing facility covering 386 m² and has built a strong reputation for delivering reliable, high-performance optical communication products worldwide.

With over 8 years of industry experience and 6 years of export experience, Xelivor has achieved annual export revenues exceeding USD 12 million. Our products are exported to customers across North America, Europe, Southeast Asia, the Middle East, and South America, supporting a wide range of networking applications from enterprise infrastructure to hyperscale data centers.

8+
Years Industry Experience
68
R&D Engineers
32
QA Inspectors
850+
Supply Chain Partners

Xelivor specializes in the design, development, and production of optical transceivers, including SFP, SFP+, SFP28, QSFP28, QSFP-DD, OSFP, DAC, and AOC solutions. Backed by a dedicated R&D team of 68 engineers, the company continuously invests in innovation and launched more than 85 new products in the past year to meet the evolving demands of high-speed optical networks.

Quality is at the core of our operations. Our quality management system incorporates incoming material inspection, in-process quality control, aging tests, compatibility verification, optical parameter testing, and final product inspection. A professional quality assurance team of 32 inspectors ensures every product meets strict international standards before shipment.

The company maintains long-term cooperation with more than 850 supply chain partners, enabling stable sourcing, efficient production, and rapid delivery capabilities. Our flexible manufacturing system supports OEM, ODM, private label, customized firmware, customized labeling, and packaging services to satisfy diverse customer requirements.

As a company with strong independent R&D capabilities, advanced testing equipment, and a customer-oriented approach, Xelivor serves distributors, system integrators, telecommunications operators, data center providers, network equipment vendors, and enterprise customers worldwide. Driven by innovation, quality, and partnership, Xelivor Optoelectronics Co., Ltd. remains committed to providing cost-effective, reliable, and future-ready optical communication solutions for global networking infrastructure.

Macro Industry Solutions

Targeted connectivity design methodologies that address localized mechanical, electrical, and structural challenges.

1. Industry 4.0 & Smart Manufacturing

Inside robot controllers, sensory arrays, and PLC cabinets, high-voltage equipment creates a lot of electrical noise. The Flex RJ45 connector, combined with integrated magnetics and grounding, ensures consistent data transmission. Its flexible structure handles constant movement, reducing solder cracks caused by vibration.

2. Edge AI & Hyper-Density Datacenters

To process massive AI workloads, modern GPU server boxes use dense boards that run hot. By shifting the ethernet port via a flexible PCB extension, engineers can place connectors at cool exhaust points. This design improves airflow and prevents overheating, ensuring stable, continuous operations.

3. Outdoor Telecom Infrastructure & Small Cells

With standard vertical RJ45 jacks, water and dust can easily settle in the contacts. Our vertical, top-entry, shielded connectors, fitted with custom-designed flex leads, allow you to position the jack opening facing downward. This simple design prevents dirt accumulation, helping system designs meet IP-rated outdoor standards.

Engineering & Sourcing Q&A

Detailed technical answers to help electrical designers and procurement managers choose the right connectors.

What is the impedance match target for Flex RJ45 connector leads?

For standard Ethernet transmission, the target is 100 ohms differential impedance. While manufacturing the flexible printed circuit (FPC), trace widths and spacing must be tightly controlled relative to the reference ground plane to avoid signal reflections, which lead to high packet drops.

How does integrated magnetics (MagJack) differ from standard RJ45 connectors?

Integrated MagJacks have internal signal isolation transformers, common-mode chokes, and capacitors built directly inside the metal housing. This design saves valuable space on the main PCB and reduces EMI, keeping digital signals clean and clear.

What materials are used to ensure the reliability of Xelivor's products?

We use high-temperature Liquid Crystal Polymer (LCP) and UL 94V-0 compliant plastics for housings, phosphor bronze for contacts (plated with 50 micro-inches of gold over nickel), and copper alloy shields with tin plating for solderability and corrosion resistance.

What customization options are available for OEM/ODM clients?

We provide full customization, including custom FPC lengths, modified contact pinouts, custom LED colors (such as green, yellow, or orange), specialized mounting options, specific shield ground tabs, and custom-designed packaging.

How does Xelivor test and verify its SFP cage assemblies and transceivers?

Our quality assurance includes strict raw material checks, inline optical testing, network compatibility verification across major hardware platforms, and accelerated thermal aging. This process ensures reliable performance for both copper and optical interfaces.

Additional Premium Network & SFP Assemblies

Browse our advanced single-port, vertical, and high-frequency network transceivers built for fast data transmission.

Single Port Modular Jack RJ45 Connector
Single Port 100/1000/2.5G/5G/10G Base-T 10p8c 8p8c Cat5 Cat5e Cat6 Cat6a Modular Network Conector PCB Jack 8P LAN RJ45 Connector
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RJ45 Female Jack with Dual USB
08C2-1X1T-03 08C2-1X1T-03-F 100 Base-T Single Port RJ45 Female Jack WITH Dual USB
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TE Replacement SFP Cage 2170193-1
2170193-1 TE Replacement Through Hole EMI Shielded Press-Fit SFP+ Cage With Light Pipe
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Low Profile RJ45 Connector with LEDs
L869-1A1T-32 L834-1G1T-S7 Tab up 10/100/1000 Base-t Low Profile RJ45 Connector With Leds
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Vertical Top Entry RJ45 Connector SI-46017-F
SI-46017-F 10/100 Base-t Vertical Top Entry Straight Female Socket RJ45 Connector With Leds
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SMT Magnetic RJ45 Connector 7498011122
7498011122 7498011122AR Tab up 10/100 Base-t SMT Magnetic Ethernet Surface Mount RJ45 Connector With Leds
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10GBASE-T SFP Ethernet Transceiver Module
10GBASE-T SFP+ Ethernet Module Copper RJ-45 30m Fiber Optical Transceiver
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Molex Compatible SFP Cage 754625001
754625001 Molex Compatible 2x1 Ports Through Hole 40P Press-Fit EMI Shielded SFP Cage With Connector
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