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Small rectangular SFP transceiver with metal housing and duplex LC ports

D-Link

D-Link DEM-310GT SFP transceiver 1000BASE-LX 1310nm 10km

SKU CH-WYHV-Z5C71 MPN DEM-310GT

Single-mode SFP transceiver for 1000BASE-LX links up to 10 km over 1310 nm fiber with duplex LC connectors

  • Port countLC
  • Supported protocolsTCP/IP
  • Power adapterSupport Voltage: 3.1-3.5 V Max Voltage: 6.0 V Max Current: 3
  • HighlightsGigabit Speeds on Multimode/Singlemode Fiber Hot Pluggable M
  • Product dimensions2.3 in × 1.2 in × 0.5 in
  • Gigabit Ethernet over single-mode fibre up to 10 km
  • 1310 nm wavelength suits 1000BASE-LX standard
  • Hot-pluggable SFP fits standard LC duplex ports
  • Metal housing reduces EMI for reliable operation
  • Operates on 3.1–3.5 V with 300 mA max current

Target Use

The D-Link DEM-310GT is an SFP transceiver built for 1000BASE-LX links over single-mode fibre at 1310nm. It suits network engineers extending Gigabit Ethernet up to 10km between switches or routers. Buyers who need multimode runs beyond 550m or densities requiring smaller form factors cannot use this module.

Sustained Operation

The metal housing reduces EMI and aids heat dissipation during continuous full-duplex traffic at 1000 Mbps. Power draw stays within a 3.1-3.5V supply range and a 300mA current ceiling, so the module remains stable in chassis that provide compliant SFP slots without extra cooling.

Build and Connectivity

A duplex LC optical connector secures the fibre pair with a positive latch, while the hot-pluggable SFP footprint allows insertion or removal without powering down the host switch. The rugged metal enclosure resists handling damage in dense patch panels, and the 2.3 x 1.2 x 0.5 inch profile fits standard SFP cages without blocking adjacent ports.

How it compares

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

Price $25.99
Cheaper than about 90% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameD-Link
Model nameDEM-310GT
Connectivity
Supported protocolsTCP/IP
Ports & slots
Port countLC
Power
Power adapterSupport Voltage: 3.1-3.5 V
Max Voltage: 6.0 V
Max Current: 300 mA
Size & build
Product dimensions2.3 in × 1.2 in × 0.5 in
Shipping weight0.07 kg
Package size132 × 74 × 48 mm

Questions about this item

How much heat or power does the DEM-310GT draw when running continuously in a switch?

The module operates on a 3.1-3.5 V supply with a maximum current of 300 mA and a maximum voltage of 6.0 V, so sustained power draw stays below 1 W.

What cabling and host slot are required to use this transceiver?

You need an SFP port that accepts 1000BASE-LX optics and a duplex LC patch cable with 9 µm single-mode fiber for the 10 km reach.

Will the DEM-310GT link reliably with older Gigabit switches that only support 1000BASE-LX?

Yes, it complies with IEEE 802.3z 1000BASE-LX and uses the standard 1310 nm wavelength, so it interoperates with any compliant legacy port.

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