SFP-25G-SR-C Juniper Networks SFP-28 25 Gigabit Transceiver Module

Overview of Juniper Networks SFP-25G-SR-C

The Juniper Networks SFP-25G-SR-C optical transceiver is a high-performance SFP28 module engineered for 25 Gigabit Ethernet applications over multimode fiber (MMF). Designed for seamless integration and reliable data transmission, this compact optical solution provides exceptional speed, efficiency, and low-latency connectivity. With support for digital optical monitoring and full MSA compliance, it ensures dependable performance across enterprise and data center environments.

Main Specifications

• Brand: Juniper Networks
• Prat Number: SFP-25G-SR-C
• Data Rate: 25Gbps Ethernet
• Form Factor: SFP28
• Transceiver Type: Optical
• Breakout Support: Not supported
• Connector: Duplex LC
• Transceiver operating temperature
• Supply voltage monitoring
• Laser bias current
• Transmit output power
• Receive input power

Optical Characteristics

Transmission Parameters

• Wavelength range: 840 nm – 860 nm
• Spectral width (RMS max): 0.6 nm
• Output power (min): -8.4 dBm
• Output power (max): 2.4 dBm

Reception Parameters

• Receiver input (min): -10.3 dBm
• Receiver input (max): 2.4 dBm
• Stressed receiver sensitivity: -5.2 dBm

Fiber Compatibility

• The module is optimized for multimode fiber (MMF) and designed to perform with both OM3 and OM4 standards:
• Core size / cladding: 50/125 μm
• OM3 bandwidth: 2000 MHz·km
• OM4 bandwidth: 4700 MHz·km

Reach and Distance

• OM3 cable: up to 70 meters
• OM4 cable: up to 100 meters

Physical and Power Specifications

Dimensions & Weight

• Height: 8.55 mm
• Width: 13.55 mm
• Depth: 57.5 mm
• Weight: 0.15 kg

Power Consumption

• The SFP-25G-SR-C is energy-efficient with a maximum power draw of just 1.5 W, making it ideal for dense network deployments where reduced consumption is essential.

Operating Conditions

Temperature Range

• Operating temperature: 0°C to 70°C
• Storage temperature: -40°C to 85°C

Compliance Standards

• This transceiver meets SFF-8402 MSA compliance standards, ensuring broad interoperability with multiple vendors and network infrastructures.

Benefits of SFP-25G-SR-C

• Compact SFP28 form factor designed for high-density environments
• Reliable 25GbE connectivity for enterprise and cloud networks
• Advanced DOM features for performance tracking and fault isolation
• Support for OM3 and OM4 multimode fibers
• Low power consumption for cost efficiency
• Engineered by Juniper Networks for superior durability and compatibility

Applications in Networking

• High-speed data centers
• Cloud infrastructure
• Enterprise networking
• Storage area networks
• Aggregation and access layers

Key Attributes and Keywords

• SFP-25G-SR-C
• Juniper SFP-28 25G
• 25 Gigabit transceiver module
• 25G SFP28 multimode transceiver
• SFP-28 LC duplex 25G
• 25GBASE-SR optical module
• data center 25G optics
• OEM compatible SFP28
• hot-pluggable 25G transceiver
• DOM / DDM SFP-25G

SFP-25G-SR-C / SFP-28 25 Gigabit Transceiver Modules

The SFP-25G-SR-C Juniper Networks SFP-28 25 Gigabit Transceiver Module category covers short-range, high-performance optical modules engineered for 25 Gigabit Ethernet links on modern data center and carrier-class networks. These modules are part of the SFP28 family — the compact, hot-pluggable transceiver format designed to provide a cost-effective upgrade path from 10G SFP+ to 25G per lane connectivity. The modules in this category are optimized for multimode fiber (MMF) fiber runs up to specified distances and are commonly used with LC duplex connectors. They are purpose-built for Juniper platforms but many items also support broad OEM compatibility with switches and routers that accept SFP28 footprints and SFF-8472 diagnostics.

Technical Specifications and Electrical/Optical Characteristics

Detailed specs are crucial for buyers who compare transceivers by link budgets, fiber type, connector style, and device compatibility. Typical technical characteristics of the SFP-25G-SR-C (Juniper SFP-28 25G) modules include:

Compatibility and Vendor Interoperability

Network architects and procurement teams must verify compatibility between the SFP-25G-SR-C modules and their switch/router platforms. This category primarily targets Juniper Networks systems but also includes cross-compatible SFP28 transceivers that function in multi-vendor environments. Compatibility notes:

Common Use Cases and Deployment Scenarios

The SFP-25G-SR-C category suits a range of modern networking deployments, especially where higher per-port density and improved bandwidth are required but fiber run lengths remain short. Typical scenarios:

Top-of-Rack (ToR) Switch Uplinks

Deploy SFP-28 25G transceivers as uplinks from top-of-rack switches to aggregation or spine switches. 25G uplinks enable a better balance of cost and performance when server NICs or leaf switches use 25G links.

Leaf-Spine Data Center Fabrics

In leaf-spine architectures, 25G SFP28 modules are often used for leaf-to-server connections and selected leaf-to-spine links where 25G is sufficient and cost-effective. They play a major role in dense 25G server-facing fabrics.

Server Connectivity

Servers with 25G network interface cards (NICs) typically connect to switches using SFP28 modules. For short intra-rack connections, the SR variant provides a clean, low-latency optical path.

Network Upgrades and Migrations

Organizations migrating from 10G to 25G can often adopt SFP28 modules and reuse existing MMF cabling (OM3/OM4) — avoiding costly recabling projects while gaining a 2.5x capacity increase per lane.

Variations, Alternatives, and Complementary Products

This category often intersects with other transceiver types and cabling solutions. Knowing alternatives helps purchasers match price to performance.

Direct Attach Copper (DAC) and AOC Alternatives

For very short connections (typically within the same rack), direct attach copper (DAC) passive cables or active optical cables (AOC) can be lower-cost and lower-latency alternatives. DACs eliminate the need for a separate transceiver and patch cable, while AOCs provide an optical link in a pre-terminated cable format.

Higher-Speed Options: QSFP28 and 100G Migration

In aggregation layers where higher throughput is required, QSFP28 100G optics and breakout cables provide a migration path. A QSFP28 port with breakout to four 25G SFP28 lanes is a common design pattern for scalable fabrics.

Lower-Speed Backwards Compatibility

Many SFP28 modules maintain backward compatibility with 10G SFP+ hardware and copper SFP+ DACs; however, this depends on platform firmware and electrical support. When backward compatibility is required, validate vendor documentation and consider using SFP+ optics for legacy links.

Bundled Kits and Patch-Cable Combos

Bundles pairing SFP28 modules with pre-certified LC duplex patch cords or breakout kits simplify procurement and reduce compatibility headaches.

Short Product Snippet (Use in Grid Listings)

SFP-25G-SR-C Juniper SFP-28 25G Transceiver – LC Duplex, 850nm, OM3/OM4, DOM — High-performance 25G short-range optical module compatible with Juniper switches. Up to 100m on OM4, low-power SFP28 form factor for dense data center deployments.

Long Product Description (Use on Product Detail Page)

The SFP-25G-SR-C SFP28 transceiver for Juniper Networks delivers reliable 25 Gigabit connectivity for short-range multimode fiber links. Built to IEEE 802.3by standards, this module uses an 850 nm VCSEL and LC duplex interface to support intra-rack and inter-rack connections. Ideal for ToR uplinks, server connectivity, and leaf-spine topologies, it supports DOM for real-time link monitoring and is available in both commercial and extended temperature ratings. Validate compatibility against your Juniper chassis model and firmware prior to purchase.SFP-25G-SR-C refers to a specific 25G SR module variant for Juniper; SFP28 is the physical form factor. SFP28 modules implement the SFP28 electrical interface and can host 25G optical PHYs. While related, model numbers and manufacturer part numbers should be checked for exact compatibility.

Lifecycle Management

Incorporate post-sale support channels and lifecycle recommendations into the product page: link to vendor support pages, provide firmware upgrade notifications, and offer maintenance contracts for large-scale deployments. Recommend keeping a small pool of tested spares for high-availability links and document serial numbers and installation dates for warranty tracking.

Final Content Blocks for Conversion Optimization

Use trust signals and technical reassurance: display “Compatibility Verified” badges, publish independent test logs (where available), and include customer reviews specific to the SFP-25G-SR-C product line. Offer “Compare” tools that let buyers choose between OM3 and OM4 variants, OEM vs third-party, and show estimated TTL (time-to-link-up) and expected link-loss margins in a clear chart or table.