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Small silver SFP transceiver module with LC duplex port and bail latch

Transition Networks

Transition Networks TN-SFP-SX 1000BASE-SX SFP transceiver

SKU CH-5XZV-9J55H

Gigabit SFP transceiver for multi-mode fibre with an LC connector reaching 220 to 550 metres at 1.25 Gbps

  • Port count1 x LC 1000Base-SX
  • Product typeTransceiver
  • Network cablingMulti-mode Fiber
  • Maximum range722 ft to 1804 ft (220m to 550m)
  • Transfer speed1.25 Gbit/s
  • HighlightsSold as 1 Each.
  • 25 Gbps transfer rate for Gigabit Ethernet links
  • LC duplex connector fits standard SFP cages
  • Multi-mode fibre reaches 220 m to 550 m
  • Hot-pluggable MSA design works in switches and routers
  • Compact 2.18" × 0.52" × 0.33" form factor

Gigabit SFP transceiver for multi-mode fibre

The Transition Networks TN-SFP-SX is a Small Form Factor Pluggable transceiver built for 1.25 Gbps bi-directional serial optical links. It fits switches and routers that accept the industry-standard SFP Multi-Sourcing Agreement footprint and connects through a single LC duplex port for multi-mode fibre runs.

Replaces legacy GBIC modules or copper uplinks

Network operators upgrading from older GBIC form factors or copper-based 1000BASE-T uplinks gain a hot-pluggable fibre interface without replacing the host chassis. The move is worthwhile when link distances exceed copper limits or when electromagnetic immunity is required for the installation path.

Steady 1.25 Gbps throughput over 220 m to 550 m

The module maintains its rated line rate continuously across the full multi-mode distance window of 220 metres to 550 metres. Optical budget and receiver sensitivity are specified for sustained operation rather than short-burst peaks, so performance does not degrade during prolonged high-utilisation periods.

How it compares

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

Price $47.99
Cheaper than about 74% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameTRANSITION
Model nameTN-SFP-SX
Product typeTransceiver
Performance
Transfer speed1.25 Gbit/s
Connectivity
Network cablingMulti-mode Fiber
Maximum range722 ft to 1804 ft (220m to 550m)
Ports & slots
Port count1 x LC 1000Base-SX
Size & build
Product dimensions2.18 in × 0.52 in × 0.33 in
Shipping weight0.23 kg
Package size155 × 84 × 43 mm

Questions about this item

What LC duplex port spacing does the 2.18" x 0.52" x 0.33" transceiver need on my switch?

It uses the standard SFP MSA footprint, so any switch or router with an SFP cage that accepts 1.25 Gbps 1000BASE-SX modules will accommodate the 2.18-inch length and 0.52-inch width.

Which orientation and latch step do installers often miss when seating this 0.15 lb module?

Insert the transceiver label-side up until the spring latch clicks; the LC connector key must face downward, and the dust plugs stay on until the fiber patch cords are ready.

When should I plan to clean or replace the LC ferrules on a link running up to 550 m?

Inspect the LC end-faces with a fiber scope at each maintenance window; clean with a lint-free wipe and isopropyl alcohol if loss exceeds the 1.25 Gbps budget, and replace the transceiver only if the transmitter or receiver fails.

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