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Small rectangular SFP transceiver module with silver metal housing and black LC duplex port visible

STARTECH

STARTECH SFP100BFXST SFP transceiver 100BASE-FX 1310nm 2km

SKU CH-6QHM-XKKVN MPN SFP100BFXST

Connects 100 Mbps Fast Ethernet links over multi-mode fiber up to 2 km using an LC duplex interface

  • Port count1 - Fiber Optic LC Duplex Female
  • Product typeTransceiver
  • Supported standardsIEEE 802.3u 100BASE-FX
  • Optical wavelength1310 nm
  • Fiber modeMulti-mode Optical Fiber
  • Supported protocolsTCP/IP
  • Reliable 100 Mbps links over 2 km multi-mode fiber
  • IEEE 802.3u 100BASE-FX standard ensures broad switch compatibility
  • 1310 nm wavelength optimised for multi-mode LC duplex connections
  • Hot-swappable SFP form factor allows changes without network downtime
  • Operates from 0 to 70 °C for standard rack environments

Product identity

The STARTECH SFP100BFXST is a hot-swappable SFP transceiver module built for 100BASE-FX Fast Ethernet links. It operates at 1310 nm over multi-mode fiber with an LC duplex connector and reaches distances up to 2 km. The module complies with IEEE 802.3u and MSA standards and supports Digital Diagnostic Monitoring.

Ideal use and limits

This module suits network administrators extending 100 Mbps links across campus or building backbones using existing multi-mode infrastructure. It is not for buyers who need Gigabit or 10 Gigabit throughput, single-mode fiber reach beyond 2 km, or compatibility with proprietary vendor coding schemes.

Pre-install checks

Verify that the host equipment accepts MSA-compliant SFP modules and provides an LC duplex port. Confirm the operating temperature range of 0 to 70 °C matches the deployment environment. Ensure multi-mode patch cables with LC connectors are available for the intended link distance.

How it compares

Measured against everything we stock in SFP & SFP+ Transceiver Modules, at today’s prices. Recalculated every night.

Price $29.99
Cheaper than about 88% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameStarTech.com
Model nameSFP100BFXST
Product typeTransceiver
Connectivity
Supported standardsIEEE 802.3u 100BASE-FX
Optical wavelength1310 nm
Fiber modeMulti-mode Optical Fiber
Supported protocolsTCP/IP
Maximum range2 km (1.2 mi)
Ports & slots
Port count1 - Fiber Optic LC Duplex Female
Size & build
Shipping weight0.05 kg
Package size114 × 89 × 33 mm
In the box
In the box1 x SFP transceiver
Environment & compliance
Temperature rangeOperating Temperature: 0 to 70 degree Celsius (32 to 158 degree Fahrenheit)
Storage Temperature: -40 to 85 degree Celsius (-40 to 185 degree Fahrenheit)
Humidity range5 to 95% RH

Questions about this item

What type of switch port is required for the SFP100BFXST to operate?

The module fits any SFP slot that supports 100BASE-FX at 1310 nm over multi-mode fiber with an LC duplex connector.

Will the transceiver link with legacy 100BASE-FX equipment running at 100 Mbps?

Yes, it complies with IEEE 802.3u 100BASE-FX so it interoperates with older 100 Mbps fiber gear using the same wavelength and multi-mode cable.

How can I confirm the link is healthy after installation?

Check the switch port LEDs for a solid link light and verify the DDM read-outs show temperature within 0–70 °C and normal optical power levels.

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