D-Link Module Multi – Mood SFP 1000Base-SX Multi-mode Fibre

Transceiver \ DEM-311GT

The D-Link DEM-311GT is a high-performance Small Form-Factor Pluggable (SFP) transceiver module designed

for Gigabit Ethernet and multi-mode fiber applications. Engineered to provide fast, reliable,

and secure fiber optic connectivity, this module is an ideal solution for enterprise networks, data centers,

and campus backbones requiring high-speed fiber links over short distances.

Key Features:

• 1000Base-SX Gigabit Performance
  Complies with the IEEE 802.3z standard, delivering 1.25Gbps full-duplex data transfer rates, ideal for demanding network environments that require high bandwidth and low latency.

• Multi-Mode Fiber Support
  Optimized for use with multi-mode fiber optic cables, the DEM-311GT supports transmission distances of up to 550 meters, depending on the fiber quality and cable type (typically with 50/125µm fiber).

• Standard LC Duplex Connector
  Features an LC-type duplex connector, ensuring easy and secure connectivity with compatible fiber cables and network equipment.

• Hot-Pluggable Design
  The module can be installed or removed without powering down the system, providing flexibility and ease of maintenance for dynamic networks.

• Wide Compatibility
  Compatible with a broad range of D-Link switches and routers with SFP ports, as well as many

• third-party networking devices that support standard SFP modules.

• Compact and Durable
  Built in a compact form factor, it fits seamlessly into tight spaces within network infrastructure racks

• and enclosures while offering long-lasting performance.

Typical Applications:

• Short-range fiber uplinks between switches and core routers

• Enterprise and campus LAN backbone connections

• Gigabit Ethernet over fiber for server rooms and data centers

• Secure and interference-free network links in EMI-sensitive environments

Conclusion:
The D-Link DEM-311GT Multi-Mode SFP 1000Base-SX Transceiver is a reliable and cost-effective solution

for deploying high-speed fiber optic links within modern network environments. With its compact design,

excellent performance, and wide compatibility, it is the perfect choice for businesses seeking

efficient and scalable fiber connectivity.

Product/Performance Specifications

Optical Receiver Sensitivity

• -18dBm (max)

Interface Options

Connector Type

• LC

Operational Ranges

Support Voltage

• 3.1-3.5V

Max Voltage    

• 6.0V

Max Current    

• 300mA

Safety Certifications and Environmental Information

Class 1 Laser

• EN 60825-1

FDA 21

• 1040.10 & 1040.11

Physical Specifications

Dimensions (WxDxH)

• 13.8 x 57.2 x 8.5 mm

Warranty and Support Information

Warranty

• 2 Year Warranty

Support

• Free Technical Support

Ordering Information

Part Number            Description

DEM-310GT            1000BASE-LX SFP Up to 10km
DEM-311GT            1000BASE-SX SFP Up to 220/550m