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

STARTECH

STARTECH SFP100BLXST 100BASE-LX SFP transceiver 100 Mbps 10 km 1310nm LC

SKU CH-NQ5G-5ZE6Q MPN SFP100BLXST

Single-mode fiber SFP transceiver delivers 100 Mbps over 10 km at 1310 nm wavelength with LC duplex connector

  • Port count1 - Fiber Optic LC Duplex Female
  • Product typeTransceiver
  • Supported standardsIEEE 802.3u 100BASE-LX
  • Optical wavelength1310 nm
  • Fiber modeSingle-mode Optical Fiber
  • Supported protocolsTCP/IP
  • Reliable 100 Mbps links over 10 km single-mode fiber
  • MSA compliant design works with standard SFP ports
  • LC duplex connector fits existing patch cables
  • Operates from 0 °C to 70 °C for indoor deployments
  • Low power draw under 1 W reduces system load

100BASE-LX SFP Transceiver for Single-Mode Fibre

The StarTech SFP100BLXST is a hot-swappable SFP transceiver module built for IEEE 802.3u 100BASE-LX networks. It provides a single LC duplex female port operating at 1310 nm over single-mode optical fibre. The module delivers a maximum link distance of 10 km or 6.2 mi. It is suited for network administrators extending 100 Mbps fibre links between switches or media converters.

Practical Limits of the 100BASE-LX Standard

The 100BASE-LX standard fixes the signalling rate at 100 Mbps and the reach at 10 km on single-mode fibre. The transceiver consumes less than 1 W and complies with MSA mechanical and electrical specifications. Operating temperature spans 0 to 70 degree Celsius (32 to 158 degree Fahrenheit) with humidity tolerance of 5 to 95 percent RH. Storage temperature ranges from -40 to 85 degree Celsius (-40 to 185 degree Fahrenheit). These environmental bounds define where the module can be deployed reliably.

Compatibility Checks Before Ordering

Verify that the host equipment accepts MSA-compliant SFP modules and supports 100BASE-LX optics at 1310 nm. Confirm the fibre plant is single-mode with LC duplex patch cords matched to the 10 km distance budget. Ensure the switch or router port is configured for 100 Mbps full-duplex operation rather than a higher speed that the transceiver cannot negotiate. The package contains one transceiver only; cables are not included.

How it compares

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

Price $38.99
Cheaper than about 80% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameStarTech.com
Model nameSFP100BLXST
Product typeTransceiver
Connectivity
Supported standardsIEEE 802.3u 100BASE-LX
Optical wavelength1310 nm
Fiber modeSingle-mode Optical Fiber
Supported protocolsTCP/IP
Maximum range10 km (6.2 mi)
Ports & slots
Port count1 - Fiber Optic LC Duplex Female
Size & build
Shipping weight0.05 kg
Package size114 × 91 × 30 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

Should I pick the 10 km single-mode LC version or a shorter-range multimode module?

Choose this 10 km single-mode LC transceiver when your link spans up to 10 km over single-mode fiber; multimode models cover shorter distances and different cable types.

What does the 100 Mbps rating deliver in an actual 100BASE-LX link?

It provides a full-duplex 100 Mbps Ethernet connection over 1310 nm single-mode fiber, compliant with IEEE 802.3u, up to the rated 10 km distance.

How does the LC duplex interface and MSA compliance limit what switches I can use?

The LC duplex port fits any MSA-compliant SFP cage, so the module works in switches and routers that accept standard SFP transceivers.

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