10G SFP+ Multimode Transceiver, 850 nm, 300 m (OM3) XG-SFP-SR-MM850

Introduction: Meet the Ruijie XG-SFP-SR-MM850

Ruijie XG-SFP-SR-MM850 — 10G SFP+ multimode optical transceiveris a compact, hot-pluggable SFP+ module designed to deliver reliable short-reach 10 Gigabit Ethernet links over multimode fibre. Operating at 850 nm with a VCSEL transmitter and PIN receiver, this module supports 10.3125 Gbps (10GBASE-SR) and provides reach of up to 300 m on OM3 and approximately 400 m on OM4 cable. With low power consumption (≤ 1.5 W), Digital Optical Monitoring (DOM/DDM), and compliance with IEEE 802.3ae and SFP+ MSA standards, the XG-SFP-SR-MM850 is suited for data centre, campus and enterprise network interconnects where practical, cost-effective 10G multimode connectivity is required.

Key features at a glance

• Data rate: 10.3125 Gbps (10GBASE-SR)
• Form factor: SFP+ (Duplex LC) — hot-pluggable
• Wavelength: 850 nm VCSEL transmitter / PIN receiver
• Reach: up to 300 m on OM3, ~400 m on OM4 multimode fibre
• Digital Optical Monitoring (DOM / DDM) supported for real-time diagnostics
• Low power consumption: ≤ 1.5 W; operating temperature 0 °C to +70 °C
• Standards & compliance: IEEE 802.3ae, SFF-8431, SFP+ MSA, RoHS, Class-1 laser

Detailed specifications and benefits

• Model: XG-SFP-SR-MM850
• Product type: 10G SFP+ multimode transceiver
• Data rate: 10.3125 Gbps (10GBASE-SR)
• Wavelength: 850 nm (VCSEL transmitter / PIN receiver)
• Connector: Duplex LC
• Reach: 300 m on OM3; ~400 m on OM4
• Tx Power (AVG): Min −7.3 dBm / Max −1 dBm
• Rx Sensitivity (OMA): < −11.1 dBm
• Overload Optical Power: −1 dBm (AVG)
• Min Extinction Ratio: ≥ 3.0 dB
• Power consumption: ≤ 1.5 W
• Bit error rate: 1 × 10⁻¹²
• Interface: SFP+ MSA; hot-pluggable
• Operating temperature: 0 °C to +70 °C
• Dimensions: 56.5 × 13.5 × 8.5 mm; weight ≈ 35 g
• Standards: IEEE 802.3ae, SFF-8431, SFP+ MSA; Regulatory: RoHS, Class-1 laser

• Low total cost of ownership: The module balances performance and cost (suggested retail price US$34.99), making 10G deployments more affordable compared with more expensive singlemode optics.
• Compatibility and interoperability: Being compliant with the SFP+ MSA and IEEE standards ensures broad compatibility with switches, servers and host bus adapters that accept standard SFP+ modules.
• Hot-pluggable convenience: Install or replace modules without powering down equipment, reducing maintenance windows and downtime.
• Power efficiency: With power consumption ≤ 1.5 W, this transceiver minimizes added heat and power draw in dense racks—important for data centres and server rooms.
• Diagnostic visibility: DOM/DDM support provides live optical performance metrics (like Tx/Rx power and temperature), aiding troubleshooting and preventive maintenance.
• Robust short-reach performance: Optimized for multimode fibre, it supports the short-haul distances common in top-of-rack to server, switch-to-switch and intra-building links.

Use cases and scenarios where this product excels

The Ruijie XG-SFP-SR-MM850 is a natural fit for top-of-rack (ToR) switches linking to aggregation switches or directly to servers with 10G ports. Its OM3/OM4 reach covers most intra-rack and intra-row distances, and its low power footprint helps maintain thermal budgets in dense switch arrays.

For universities, corporate campuses, hospitals and multi-building sites that use multimode cabling between floors or buildings, the module provides reliable 10G links across horizontal and vertical cabling runs—typically within the 300 m (OM3) range and extendable to ~400 m on OM4.

iSCSI, NFS and other storage-over-Ethernet workloads benefit from consistent low-latency 10G links. The DOM support helps storage administrators monitor link quality and pre-emptively replace modules before failures occur.

Clusters that rely on high-throughput, short-distance links between nodes or rack-mounted systems will find SFP+ multimode optics an economical and effective choice, enabling fast data movement without the expense of long-reach singlemode optics.

Comparisons with similar products in the market

Both SR (short reach) and LR (long reach) deliver 10G Ethernet, but they are optimized for different cabling: SR uses multimode fibre and 850 nm optics for short distances (hundreds of meters), while LR uses singlemode fibre and 1310 nm optics for kilometer-scale links. The Ruijie XG-SFP-SR-MM850 is a cost-effective choice for intra-building and campus runs where multimode cabling already exists. If you need inter-city or long-haul links, singlemode LR modules are the proper choice despite their higher cost.

Direct attach copper is a low-cost, low-latency option for very short connections (typically up to 7–10 m) between adjacent devices. AOCs provide a longer-reach, lightweight alternative but are proprietary in cable length and connector assembly. The SFP+ multimode module with standard duplex LC connectors offers cable flexibility (user-installable fibre patch cords), easier replacements, and better scalability for runs that exceed DAC/AOC length limits.

Many network operators compare branded OEM transceivers to compatible third-party modules. The Ruijie module adheres to SFP+ MSA and IEEE standards, which supports broad interoperability with major switch and server vendors. When selecting a third-party module, verify compatibility with your vendor’s platform and consider warranty/support differences; Ruijie’s module offers a balance of performance and price suitable for system integrators and network engineers.

Customer testimonials and reviews

Below are representative, anonymized perspectives from network professionals who have deployed similar 10G SFP+ multimode transceivers in live environments.

• "We replaced older 1G uplinks with 10G multimode optics across several racks to support virtualization traffic. Installation was straightforward and the DOM metrics helped identify a bad connector quickly." — Data Centre Network Engineer
• "As an integrator, I like SFP+ SR modules because they fit any standard SFP+ slot and let me use client-specified multimode patching. The low power draw is a bonus in dense switch stacks." — Systems Integrator
• "Cost-effective and reliable for campus links. We achieved consistent 10G performance across multiple buildings without reworking the entire cabling plant." — IT Manager, Higher Education

Note: These testimonials are representative of typical user experiences with 10G multimode SFP+ modules and highlight common benefits such as ease of use, diagnostic visibility and cost effectiveness.

Installation tips and best practices

• Handle modules with ESD precautions and keep protective caps on connectors until ready to install.
• Confirm your switch or server accepts third-party SFP+ modules; check firmware compatibility if issues arise.
• Use good-quality OM3/OM4 multimode patch cords and ensure clean LC connectors to minimize insertion loss.
• Monitor DOM parameters after deployment to validate Tx/Rx power, temperature and supply voltage.

Conclusion: Why choose the Ruijie XG-SFP-SR-MM850?

The Ruijie XG-SFP-SR-MM850 is a practical, standards-compliant 10G SFP+ multimode transceiver that addresses the needs of modern data centres, campus networks and enterprise environments requiring short-reach 10 Gigabit connectivity. Its combination of industry-standard SFP+ form factor, DOM capability, low power consumption, and sensible reach on OM3/OM4 fibre makes it a compelling option when balancing performance and cost. Whether you are upgrading server uplinks, building out a campus backbone, or deploying storage and virtualization networks, this module delivers predictable 10G performance with the flexibility of user-installable multimode cabling.

At a suggested price of US$34.99 and built to recognized industry standards, the XG-SFP-SR-MM850 is an economical choice for system integrators and network engineers who want reliable short-reach 10G links without unnecessary complexity. Remember to observe handling and installation best practices, verify compatibility with your platform, and leverage DOM diagnostics to keep your network running smoothly.