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Compact silver metal box with RJ45 and SC fiber ports

Black Box Corporation

Black Box Corporation LMC1003A-R3 media converter 1000Base-SX 850 nm 220 m SC

SKU CH-TTJS-KGJ1X MPN LMC1003A-R3

Converts Gigabit Ethernet between twisted pair and 850 nm multi-mode fibre up to 220 m, rack-mountable or wall-mountable, TAA-compliant

  • Converts copper to fibre for 220 m reach
  • 850 nm multimode optics suit short-haul links
  • Gigabit Ethernet speed on both RJ-45 and SC ports
  • Mounts in 14-slot FlexPoint chassis or on wall
  • TAA-compliant build assembled in the United States

Gigabit fibre-to-copper converter

The Black Box LMC1003A-R3 is a standalone media converter that bridges 1000Base-T copper links with 1000Base-SX multi-mode fibre at 850 nm. It supports a maximum reach of 220 m over duplex SC fibre and fits into a 14-slot FlexPoint chassis for rack deployment. The unit is TAA compliant and ships new with a one-year limited warranty.

Verify fibre type and power before ordering

Confirm that your existing cabling is multi-mode fibre with duplex SC connectors and that the link distance does not exceed 220 m. The converter requires an external power supply operating at 60 Hz and provides one RJ-45 port alongside the single SC port. Ensure rack or wall space matches the 1 in height, 3 in width and 4 in depth form factor.

Replaces fixed copper runs

This unit upgrades installations limited by copper distance or bandwidth by extending Gigabit Ethernet over fibre without replacing the switch infrastructure. The jump is worth it when you need to span 220 m at 1000 Mb/s and want the option to migrate later to a 14-slot chassis system. It is not suited for single-mode fibre links or distances beyond the rated 220 m.

Highlights

  • Converts copper to fibre for 220 m reach
  • 850 nm multimode optics suit short-haul links
  • Gigabit Ethernet speed on both RJ-45 and SC ports
  • Mounts in 14-slot FlexPoint chassis or on wall
  • TAA-compliant build assembled in the United States

Specifications

No published specifications for this item yet.

Questions about this item

Does the LMC1003A-R3 include a power supply or must I buy one separately?

The unit requires an external power supply; it is compatible with the FlexPoint 14-slot power chassis which powers multiple converters from one source.

Should I choose the 850 nm 220 m multimode version or a different wavelength for my fibre run?

This model operates at 850 nm over multimode fibre up to 220 m; select it when your link distance fits that range and your cabling is multimode.

What does the 1000Base-SX rating mean when the converter is installed in a live Gigabit Ethernet link?

It provides a 1000 Mbps copper RJ-45 port and a duplex SC fibre port at 850 nm, converting between twisted-pair and multimode fibre without reducing line-rate throughput.

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