DEM431XT D-Link SFP+ 10GBASE-SR Multi-Mode Fibre Transceiver (550m)

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  • Enhanced Small Form-factor Pluggable Format

The transceivers use the Enhanced Small Formfactor Pluggable format (SFP+). The SFP+ form factor is smaller than other form factors such as Xenpak, X2, and 10G XFP, ensuring lower costs, lower power disruption, and higher port density. They provide the necessary signal amplification for data to be transmitted to the network cable from the port, and vice versa, for the port to receive data from the network cable.

  • Hot Pluggable

All D-Link transceivers are hot-pluggable. You can connect a transceiver while the system is powered on without causing any problems. This permits modules to be added or removed without interrupting the network. 10G Ethernet speeds. The transceivers all support 10G Ethernet, which results in very fast data transmissions of up to 10 Gbit/s. This is 10 times faster than Gigabit Ethernet and enables the switch to handle faster and higher data transmissions, making it very suitable for business needs.

  • Digital Diagnostics Monitoring (DDM)

Several of the 10G SFP+ Modules1 feature DDM realtime monitoring of critical parameters, including transmitted and received power, temperature, and voltage. This allows for convenient monitoring of the module’s fiber connection and early detection of problems.

  • Bi-directional WDM transmission

Bi-directional WDM transmission allows data to be transmitted simultaneously in both directions on a fiber cable. This helps you save on the cost of deploying extra fiber cables as well as allows for more flexible bandwidth allocation.

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DEM-431XT is a high performance 850nm Multi-Mode SFP+ transceiver. Supporting Full-duplex, 10 Gigabit speeds on Multi-Mode fiber cables. The DEM-431XT is 802.3ae 10GBASE-SR compliant and supports Full-duplex 802.3x Flow control. The DEM-431XT provides the necessary signal amplification for data to be transmitted to the network cable from the port, and vice versa.

Technical Specifications


  • 10 Gbps


  • Standard Compliance: IEEE-802.3ae
  • Form Factor Type: SFP+
  • Fiber Channel FC-PI Standard: 1200-Mx-SN-I
  • Fiber Media Support: Multi-Mode
  • Distance Capacity: Distance Capacity


  • Connector: Duplex LC Connector
  • Wavelength: 850 nm
  • Output Optical Power (TX Optical Power): Max.: -1 dBm
    Min.: -6.5 dBm
  • Input Optical Power(RX Optical Power): Max.: -1 dBm
    Min.: -11.1 dBm
  • Sensitivity: -11.1 dBm
  • Cable Type: Multi-mode 50/125 um or 62.5/125 um fiber


  • Power: 3.3 V
  • Maximum Input Current: 3.3 V: 300 mA
  • Minimum Power Budget: 4.6 dB
  • Maximum Power Budget: 10.1 dB
  • Heat Generated: 3.6 kJ/h


  • MTBF (Hours): 3,960,000

Physical and Environment

  • Operating Temperature: 0 to 70 °C
  • Storage Temperature: 40 to 85 °C
  • Operating Humidity: 5 to 85%
  • Storage Humidity: 5 to 95%
  • Dimensions (W x D x H): (0.58 x 2.22 x 0.47 inches) Compliant with SFF8432,14.8 x 56.5 x 11.85 mm
  • Weight: 18 g (0.04 lbs)

Emission(EMI) and Safety

  • Safety: UL, TUV, CDRH
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