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Small rectangular SFP transceiver module with a black LC connector and silver metal housing

AddOn

AddOn FTLF8519P3BNL-AO 1000Base-SX SFP Transceiver 850nm 550m LC server accessory

SKU CH-9HMT-C9F8T MPN FTLF8519P3BNL-AO

Finisar-compatible SFP transceiver delivers 1 Gbit/s over multi-mode fibre at 850 nm up to 550 m via LC connector

  • Product typeSFP (mini-GBIC)
  • Details1 × 1000Base-SX
  • Key features1 x LC 1000Base-SX Network
  • Finisar-compatible SFP ensures drop-in replacement for OEM modules
  • 850 nm wavelength supports 550 m reach over multi-mode fibre
  • LC duplex connector enables standard multi-mode patch cabling
  • MSA compliance guarantees interoperability across multi-vendor networks
  • Factory-loaded OEM configuration data delivers identical initialisation and performance

Transceiver type and audience

This SFP transceiver delivers 1-Gigabit connectivity for network administrators upgrading or repairing enterprise switches and routers. It is built to Finisar FTLF8519P3BNL specifications and initialises identically to the original module.

Reach and headroom

The module operates at 850nm over multi-mode fiber with a maximum reach of 550m and an LC duplex interface. It handles campus and data-centre links within that distance but cannot support longer single-mode runs.

MSA compliance limits

The transceiver complies with multi-source agreement standards for mechanical and electrical compatibility across vendors. It does not extend beyond the defined 1000Base-SX parameter set, so 10-Gigabit or wavelength-division links are not supported.

How it compares

Measured against everything we stock in Drive Cages & Server Add-Ons, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 88% of the 1,119 comparable items (median $74.99).

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Specifications

Product
Brand nameAddOn - Network Upgrades
Model nameFTLF8519P3BNL-AO
Product typeSFP (mini-GBIC)
Size & build
Shipping weight0.16 kg
Package size121 × 70 × 30 mm

Questions about this item

Will this 850nm SFP work in my older switch that only accepts 1000Base-SX modules?

Yes, the module complies with MSA standards and initializes identically to OEM transceivers, so it can be mixed with existing 1000Base-SX equipment.

How do I verify the link is healthy after installing the transceiver?

The DOM feature lets you monitor real-time optical power and temperature through the switch management interface to confirm the 850nm link is within spec.

Does the package include the LC patch cable needed to reach 550m over multi-mode fiber?

Only the transceiver is supplied; you must source a compatible LC duplex multi-mode patch cable separately to complete the 550m link.

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