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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

  • Device TypeTransceiver
  • StandardsIEEE 802.3u 100BASE-FX
  • Wavelength1310nm
  • Fiber CableMulti-mode Optical Fiber
  • ProtocolsTCP/IP
  • Ports1 - Fiber Optic LC Duplex Female
  • 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.

Highlights

  • 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

Specifications

BrandStarTech.com
ModelSFP100BFXST
Device TypeTransceiver
StandardsIEEE 802.3u 100BASE-FX
Wavelength1310nm
Fiber CableMulti-mode Optical Fiber
ProtocolsTCP/IP
Ports1 - Fiber Optic LC Duplex Female
Max Distance2 km (1.2 mi)
TemperatureOperating Temperature: 0 ~ 70 degree Celsius (32 ~ 158 degree Fahrenheit)
Storage Temperature: -40 ~ 85 degree Celsius (-40 ~ 185 degree Fahrenheit)
Humidity5~95% RH
FeatureDelivers reliable 100 Mbps connections for 100Base-FX compliant networks
Meets or exceeds MSA (Multi-Source Agreement) industry standards
Supports multi-mode fiber (LC connector)
Maximum distance up to 2 km / 1.2 mi.
1310nm optical wavelength
Digital Diagnostics Monitoring (DDM / DOM)
Hot-pluggable
Package Contents1 x SFP transceiver
Shipping weight0.05 kg
Package size114 × 89 × 33 mm

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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