Planet MFB-FX SFP-Port 100Base-FX Transceiver (1310 nm) - 2 km

The PLANET MFB-FX is an SFP 100Base-FX fiber transceiver for compatible network equipment, using 1310 nm multimode fiber with an LC port for links up to 2 km. It suits network administrators extending or maintaining short-range Fast Ethernet fiber connections.

Recommended For

• Network technicians maintaining an existing 100BASE-FX multimode fiber link can use it as a replacement optic when both ends support 100BASE-FX and the installed link matches the module’s fiber and connector requirements.
• IT teams extending or restoring a legacy 100 Mbps Ethernet connection between buildings, rooms, or equipment areas can consider it for a compatible multimode fiber run within its rated reach.
• Operators of PLANET switches with a 100BASE-FX SFP interface can use it for a matching Fast Ethernet fiber connection; confirm the exact switch model supports 100BASE-FX before selecting the optic.
• Teams keeping older industrial or facility equipment online over an existing 100BASE-FX multimode network may find it suitable when replacing like-for-like optics rather than upgrading the link.

Real-World Use Scenarios

• When a legacy 100 Mbps network needs a fiber link between two rooms or nearby buildings, install compatible 100BASE-FX SFPs at both ends and connect them with multimode fiber; the link can carry Ethernet traffic over a run of up to 2 km when the equipment and fiber match.
• When adding a fiber connection to a compatible PLANET switch or SFP media converter, use the MFB-FX in a port that supports 100BASE-FX; the device can then connect to another matching fiber endpoint without using a copper Ethernet run between them.
• When replacing a failed optic in an existing 100BASE-FX multimode link, choose this module if the host supports it and the link uses the matching fiber and LC connections; using the same link type at both ends helps restore the connection without changing the network design.
• When extending an older Fast Ethernet connection to a remote network point, this SFP can provide a fiber segment for compatible 100BASE-FX equipment; the resulting connection remains a 100 Mbps Ethernet link, rather than a Gigabit upgrade.
• When installing or replacing an optic in supported equipment, the module can be inserted or removed without powering down the device, so a compatible host may not need a full shutdown for the transceiver change.

Spec Summary