SFP28 optical transceiver Zyxel SFP25G-SR-ZZ0101F 25G 850 nm short-range multimode

Zyxel SFP25G-SR-ZZ0101F is a short-range SFP28 optical transceiver designed for 25 Gigabit Ethernet links over multimode fiber at 850 nm. The module delivers high-bandwidth, low-latency connectivity in a compact, hot-pluggable form factor suitable for use in data center switches, server uplinks and aggregation links. It supports standard 25GBASE-SR operation for short multimode fiber runs and is intended for straightforward installation and reliable operation in dense network environments.

Advantages

The transceiver offers a compact SFP28 form factor that simplifies upgrades and maintenance by allowing hot-plug installation without powering down equipment. Operating at 850 nm, it provides optimized performance for multimode fiber with a focus on low latency and high data throughput. The module is engineered for compatibility with 25G Ethernet interfaces and is appropriate for short-reach links inside racks or between adjacent racks, enabling efficient cabling and space usage.

Suitable for

• Data center switch-to-switch short-range connections
• Server uplinks requiring 25G bandwidth
• Top-of-rack aggregation and spine-leaf architectures
• High-density patch panels and short multimode fiber links

Key specifications

• Interface: SFP28 form factor for 25 Gigabit Ethernet
• Wavelength: 850 nm optimized for multimode fiber
• Media: Multimode fiber (MMF)
• Typical reach: short-range links within data center racks or between adjacent racks
• Hot-pluggable design for tool-free replacement
• Low-latency, high-throughput operation for 25G links

How to use

Insert the SFP28 transceiver into a compatible SFP28 port on a network switch or server until it seats securely. Connect multimode fiber patch cords with matching LC connectors to the module. Verify that the connected equipment is configured for 25G operation and that link status LEDs or management interfaces indicate an active connection. For module removal, disengage any retention mechanism and pull the module straight out to avoid damaging the port or fiber connectors.

Recommendations

Use high-quality OM3 or OM4 multimode fiber for reliable short-range performance and maintain clean LC connector endfaces to prevent signal loss. Ensure the host device supports SFP28 25G modules and confirm link settings in network management tools after installation. Avoid bending fiber beyond recommended radius and keep patch cord lengths appropriate for the planned rack layout.