Xelivor Xelivor

SFP Cage Manufacturer & Factory

High-Density, Low-EMI Shielding Cages and Interconnect Solutions Tailored for Next-Generation Cloud, Telecom, and Enterprise Networks

Corporate Profile & High-Speed I/O Engineering Expertise

Establishing Next-Generation Benchmarks in Optical and Copper Data Transmission Hardware

As the backbone of high-density switching systems, optical transceiver cages require microscopic dimensional stability and advanced EMI (Electromagnetic Interference) containment. Xelivor Optoelectronics Co., Ltd. stands as a premier SFP cage manufacturer and factory, delivering comprehensive interconnect architectures to the global market. Established in 2016, our enterprise has dedicated itself to resolving signal integrity and thermal management challenges for optical transceivers and fiber connectivity configurations across telecommunications, cloud computing platforms, and enterprise data center frameworks.

Operational within a highly specialized, cleanroom-equipped engineering headquarters spanning 386 m², Xelivor leverages automated manufacturing parameters to produce tight-tolerance components. Supported by over 8 years of industrial manufacturing experience and 6 years of international trade operations, our global export network generates an annual export turnover exceeding USD 12 million. Today, network architects across North America, Europe, South America, the Middle East, and Southeast Asia rely on Xelivor hardware to sustain hyperscale workflows.

$12M+

Annual Export Value

68+

R&D Engineers

85+

New Products Annually

850+

Supply Chain Partners

Engineering Physics of High-Performance SFP Cages

SFP (Small Form-Factor Pluggable) cages function as mechanical housings and electromagnetic shields for hot-pluggable optical modules. As data rates climb from 10Gbps (SFP+) and 25Gbps (SFP28) to 56Gbps (SFP56) and 112Gbps (SFP112) per channel, high-speed routing is susceptible to radiative noise and thermal degradation. Understanding these mechanics is essential for system reliability:

  • Electromagnetic Interference (EMI) Mitigation: Metal spring fingers and conductive elastomeric gaskets seal all perimeter apertures. This keeps electromagnetic radiation within the housing and prevents cross-talk with neighboring ports or external systems.
  • Thermal Dissipation Configurations: Heat sinks made of high-conductivity aluminum alloys or copper are mounted directly onto the cages. Riding heatsinks with customized fin styles dissipate localized heat via forced-air system cooling.
  • Press-Fit (Compliant Pin) Technology: Solderless press-fit designs prevent thermal damage to thick, high-layer-count system PCBs during assembly. It guarantees high mechanical retention force and low impedance connections.

Interconnect Specification Profile

  • Base Material Copper Alloy / Nickel Silver
  • Plating Spec Tin over Nickel / Gold option
  • Mating Cycles Min. 100 insertions
  • Compliant Pin Style Eye-of-the-needle (Press-Fit)
  • Pitch Configurations Standard MSA Spacing

Localized & Specialized Application Scenarios

Deploying Optimized High-Speed Interconnects Across Harsh and High-Density Environments

Hyperscale Data Centers

In modern cloud facilities, stacked 2xN (e.g., 2x4, 2x6, 2x8) SFP28/QSFP28 cages enable maximum port density on top-of-rack (ToR) switches, saving rack space while maintaining optimal airflow and thermal margins.

Telecom Carrier Stations

Designed for cellular backhauls and distributed antenna systems (DAS), our cages resist mechanical vibration and corrosion, ensuring continuous 5G network performance in outdoor remote radio units (RRUs).

Industrial Ethernet & IIoT

Substation switches and industrial PLC architectures face extreme electromagnetic interference. Our nickel silver alloy SFP housings offer superior shielding effectiveness, preventing bit error rate (BER) spikes in industrial settings.

Technical Roadmap & Future Outlook

Empowering the Transition from 10G/25G to 56G PAM4 and 112G Architectures

As networks face rising demand from artificial intelligence (AI) models, high-performance computing (HPC), and low-latency storage access, the optical interface must evolve. The roadmap below highlights Xelivor's commitment to advancing structural and electrical performance standards:

Phase 1: SFP28/zSFP+ Standard

Optimized for 25Gbps NRZ transmission. Focuses on minimizing the resonance of critical spring components and refining surface flatness. This ensures a clean ground connection during quick-plug cycles.

Phase 2: SFP56 & PAM4 Modulation

Operating at 50Gbps using 4-level Pulse Amplitude Modulation. At this frequency, signal attenuation is critical. Xelivor integrates tighter impedance matched contacts to decrease return loss at the physical receptacle interface.

Phase 3: SFP112 & Co-Packaged Optics

Moving toward 112Gbps per channel. This stage integrates ultra-flat mounting plates and hybrid thermal heatsinks. These designs manage modules that operate at high temperatures without compromising EMI integrity.

China Factory Supply Chain Resilience & Manufacturing Advantages

The global electronic components landscape requires manufacturing flexibility, cost optimization, and rapid engineering iteration. Our production facility in China provides key structural advantages for your supply chain:

  • Vertical Integration: We control the full production cycle under one roof, from precision mold fabrication and sheet metal stamping to automated plating and automated packaging.
  • Strong Supplier Relationships: Partnering with over 850 raw material suppliers ensures steady access to specialized materials like copper alloys, steel plates, and plastic housings, even during market shortages.
  • Rapid Custom Prototyping: Our R&D team of 68 engineers can turn a customized customer specification into a physical, tested prototype in just weeks, reducing your time-to-market (TTM).

Why Partner With Xelivor?

By integrating automated assembly techniques and optical testing processes, we deliver Tier-1 quality at a competitive total cost of ownership (TCO).

ISO9001:2015 Registered Facility

Global Compliance & Localized Technical Support

Securing Seamless Compatibility and Regulatory Compliance Across International Borders

MSA Compliance

Our cages are designed to meet the Multi-Source Agreement (MSA) mechanical standards. This ensures compatibility with transceivers from any global manufacturer, including SFP, SFP+, SFP28, and QSFP formats.

Strict Quality Control

A professional team of 32 QA inspectors uses automated optical inspection (AOI), mechanical pull testers, and salt-spray corrosion chambers to test every product before shipment.

Environmental Standard Compliance

All raw materials and plating processes comply with RoHS 2.0, REACH, and CE directives, ensuring environmentally safe operation and easy customs clearance globally.

Frequently Asked Questions (FAQ)

Technical Answers to Common Questions in High-Speed I/O System Design

What is the difference between SFP+ and SFP28 cages?
Although SFP+ (10Gbps) and SFP28 (25Gbps) share the same physical form factor and dimensions, SFP28 cages require tighter impedance control, lower insertion loss, and better EMI shielding to manage the higher frequencies of 25Gbps transmission.
Why are press-fit pins preferred over through-hole solder pins?
Press-fit (compliant pin) designs provide solderless mechanical connections, avoiding the thermal stress of wave soldering on multi-layer PCBs. They also make replacing or repairing cages easier during maintenance.
What materials does Xelivor use for SFP cages?
We primarily use high-grade copper alloys (such as phosphor bronze) and nickel-silver alloys. Phosphor bronze offers excellent mechanical spring properties and electrical conductivity, while nickel-silver provides superior corrosion resistance and natural EMI shielding.
How do light pipes and heatsinks improve system performance?
Integrated light pipes route status LED light from the motherboard to the front panel without sacrificing EMI shielding. Heatsinks sit directly on the transceiver module to draw heat away, keeping the optics within safe operating temperature limits.
Can Xelivor manufacture custom cage configurations?
Yes. Supported by our 68 R&D engineers, we provide complete OEM/ODM customization. This includes custom port layouts, specialized heatsink fins, custom mounting configurations, and matching layout designs for your PCBs.

Inside the Manufacturing Facility

Examine Our Production Standardizations, Advanced Quality Check Systems, and Assembly Lines

Quality is at the core of our operations. Our comprehensive quality management system incorporates incoming material inspection (IQC), in-process quality control (IPQC), thermal aging tests, mechanical endurance verification, optical parameter checks, and final packaging inspection. With advanced machinery and structured assembly protocols, we ensure our global partners receive reliable, zero-defect hardware.

All SFP Cage Products