Xelivor
Xelivor
Explore our top-tier 2xN stacked optical transceiver cages designed for flawless signal integrity, EMI mitigation, and robust mechanical integration.
As modern cloud infrastructures, hyperscale data centers, and advanced telecommunication nodes demand exponentially higher bandwidth densities within standardized rack spaces, the design parameters of physical interfaces undergo critical evolutionary leaps. Traditional 1xN (single-row) SFP layouts, while providing acceptable performance, exhaust valuable PCB horizontal real estate. This limitation is directly mitigated by the introduction of the SFP 2xN Stacked Port Cage system.
By vertically mounting two SFP/SFP+/SFP28 optical modules in a single slot pattern, 2xN configurations double port density on standard system panels. However, stacking these active components is not simply a matter of vertical placement; it involves resolving multi-layered challenges regarding high-frequency signal integrity, thermal dissipation, mechanical reliability, and electromagnetic interference (EMI) containment.
Worldwide deployment of 5G infrastructure, edge computing nodes, and Artificial Intelligence (AI) training clusters has highlighted two physical barriers in network equipment hardware: Thermal Runaway and EMI Leakage. Stacked 2xN SFP cages reside at the critical boundary of both issues.
Optical modules operating at high speeds act as high-frequency noise radiators. Our cages use custom-engineered copper alloy EMI fingers and optional elastomeric gaskets. These ensure 360-degree contact with both the optical module and the faceplate panel, containing electromagnetic radiation and preventing network packet loss.
Standard stacked configurations block rearward airflow. Xelivor's 2xN SFP cages utilize an engineered perforation matrix along the lateral metal walls. This permits ambient air to flow across the optical transceiver modules, reducing junction temperatures by up to 8°C compared to solid wall configurations.
For port status indication, our cages integrate PMMA optical-grade light pipes (available in round, square, and customized profile shapes). These redirect PCB-mounted status LED light directly to the front bezel, minimizing cross-talk and maximizing clarity under varying viewing angles.
As channel speeds scale to 25Gbps and 28Gbps (SFP28 NRZ, zSFP+), the physical connection interface must maintain strict impedance control (typically 100Ω ±10%). The transition zone from the press-fit pins to the PCB traces represents a major source of impedance mismatches. Xelivor engineers minimize these discontinuities by modeling trace dimensions, via configurations, and pad shapes using advanced high-frequency simulation tools (HFSS).
By optimization of the internal connector contact pin geometries, we reduce Near-End Crosstalk (NEXT) and Far-End Crosstalk (FEXT) in the stacked configuration, ensuring a wide eye diagram opening and low Bit Error Rates (BER) across all transceiver channels.
Our 2xN SFP series replaces or complements industry-standard products from top manufacturers. To assist system architects and purchasing teams, the table below maps common configuration options and industry-compatible interfaces:
| Part Number Configuration | Port Layout | Connector Pins | EMI Shielding Style | Light Pipe Integration | Compatible Competitor Reference |
|---|---|---|---|---|---|
| 1-2007562-8 Compatible | 2x6 Stacked (12 Ports) | 240P Press-Fit | External EMI Spring Fingers | Not Included | TE Connectivity 1-2007562-8 |
| 2180640-1 Compatible | 2x6 Stacked (12 Ports) | 240P Press-Fit | External EMI Spring Fingers | Integrated Round Light Pipes | TE Connectivity 2180640-1 |
| 2347721-8 Compatible | 2x6 Stacked (12 Ports) (zSFP+) | 240P Press-Fit | EMI Spring Fingers (high-speed) | Integrated Light Pipes | TE Connectivity 2347721-8 |
| 2007394-6 Compatible | 2x4 Stacked (8 Ports) | 160P Press-Fit | External EMI Spring Fingers | Not Included | TE Connectivity 2007394-6 |
| SFPP-3120-L Compatible | 2x4 Stacked (8 Ports) | 160P Press-Fit | External EMI Spring Fingers | Integrated Light Pipes | Pulse Electronics SFPP-3120-L |
| SFP013-L Compatible | 2x1 Stacked (2 Ports) | 40P Press-Fit | EMI Gasket Style | Not Included | Pulse Electronics SFP013-L |
| 2169788-1 Compatible | 2x8 Stacked (16 Ports) | 320P Press-Fit | EMI Gasket Style | Integrated Light Pipes | TE Connectivity 2169788-1 |
| 2274867-6 Compatible | 2x8 Stacked (16 Ports) | 320P Press-Fit | EMI Shielded Gasket | Integrated Light Pipes | TE Connectivity 2274867-6 |
| 1-2132403-6 Compatible | 2x5 Stacked (10 Ports) | 200P Press-Fit | EMI Shielded Gasket | Integrated Light Pipes | TE Connectivity 1-2132403-6 |
| 754625001 Compatible | 2x1 Stacked (2 Ports) | 40P Press-Fit | EMI Shielding Fingers | Not Included | Molex 75462-5001 / 754625001 |
High-Temperature Thermoplastic (UL 94-V0 rated)
Copper Alloy / Nickel Silver (Thickness: 0.25mm)
Gold plating (30μ" min) over Nickel in contact area
-40°C to +85°C (Extended Industrial Class)
As SFP 2xN stacked systems are integrated globally, regional and application-specific parameters shape their deployment. From climate-controlled colocation data centers to extreme-temperature outdoor telecommunication enclosures, Xelivor SFP cages adapt to diverse environmental demands.
In high-density hyperscale deployments, server racks draw up to 30kW-50kW. The 2xN SFP28 stacked cages support 25GbE per port, totaling 300Gbps of bi-directional throughput in a 2x6 configuration. These cages are designed to operate continuously under high temperatures, reducing failure rates and minimizing costly site visits.
Outdoor cabinets face high humidity, airborne particulates, and temperature fluctuations. To combat these conditions, Xelivor offers 2xN SFP cages made from corrosion-resistant nickel-silver alloys. These materials resist salt spray and oxidation, maintaining contact resistance and physical stability in challenging environments.
International market access requires adherence to rigorous testing standards. Xelivor’s manufacturing pipeline ensures that all SFP cage products comply with local and international regulatory requirements:
Established in 2016, Xelivor Optoelectronics Co., Ltd. has developed into a dedicated manufacturer of optical transceivers, interconnect systems, and fiber connectivity solutions. With modern manufacturing facilities covering 386 m² and specialized cleanroom zones, we serve global data center, telecom, enterprise network, and cloud computing industries.
Our dedicated R&D team of 68 engineers drives product innovation. In the past year alone, Xelivor introduced over 85 new products, focusing on high-speed and multi-port configurations like 2xN SFP+, SFP28, zSFP+, and QSFP-DD solutions. Quality is central to our manufacturing process, overseen by a professional quality assurance team of 32 inspectors who conduct rigorous multi-stage checks.
As the optical communications industry transitions from 10G/25G to 56G (PAM4) and 112G per lane, physical cage designs must evolve alongside electrical interfaces. Xelivor is at the forefront of this shift, adapting our 2xN stacked architectures to meet these next-generation requirements.
At 56Gbps and 112Gbps speeds, skin effect, dielectric loss, and copper trace attenuation increase significantly. To maintain signal integrity, our future product roadmap includes:
Answers to technical queries regarding design, routing, installation, and thermal performance of stacked SFP cages.
Featuring integrated EMI shields and high-performance connector pins for reliable high-speed network connections.
Whether you require custom light pipe placements, modified mounting layouts, or high-volume pricing for large-scale production, our engineering team is here to help.
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