D-Link DEM-311GT 1000BASE-SX SFP Transceiver 850nm 550m Multi-Mode
The D-Link DEM-311GT is a high-performance 850nm multimode SFP transceiver designed for Gigabit Ethernet networking. Supporting full duplex operation and 1.25 Gbps data speeds, this hot-pluggable module enables reliable fibre optic connectivity over distances of up to 550m on 50µm OM3 multimode fibre or 220m on 62.5µm OM1 fibre. Ideal for enterprise LAN, SAN networks, data centres, and ISP applications, the DEM-311GT features a metal housing to reduce EMI and increase durability.
Key Features
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1000BASE-SX Gigabit Performance: Delivers full duplex 1.25 Gbps data transfer rates for high-speed network connectivity
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Extended Reach: Supports up to 550m over 50µm multimode fibre and 220m over 62.5µm fibre
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Hot-Pluggable Design: Easily swap transceivers while the switch is powered on, minimising network downtime
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Wide Compatibility: Works seamlessly with D-Link switches and networking equipment featuring SFP/mini-GBIC ports
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Durable Construction: Metal housing reduces electromagnetic interference and enhances durability
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IEEE 802.3z Compliant: Ensures standards-based compatibility with Gigabit Ethernet networks
High-Speed Gigabit Connectivity
The DEM-311GT provides Gigabit Ethernet speeds over multimode fibre optic cable, making it perfect for businesses requiring high-bandwidth connections across multiple floors or buildings. With its 850nm shortwave laser and duplex LC connector, this SFP module delivers reliable, high-performance networking for enterprise environments.
Flexible Deployment Options
Whether you're building a new network or upgrading existing infrastructure, the DEM-311GT offers the flexibility needed for modern data centres and enterprise networks. Its hot-swappable capability allows network administrators to replace or upgrade modules without powering down equipment, ensuring maximum uptime and minimal disruption during maintenance.
Universal Compatibility
Designed to work with all D-Link switches supporting mini-GBIC/SFP ports, the DEM-311GT integrates seamlessly into your existing network infrastructure. The module is MSA (Multi-Source Agreement) compliant, ensuring compatibility with industry-standard networking equipment.
Ideal Applications
- Enterprise LAN and SAN networks
- Data centre interconnects
- ISP Gigabit Ethernet communication links
- Campus network backbone connections
- Building-to-building fibre links
What's in the Box
- D-Link DEM-311GT SFP Transceiver Module
Full Specifications
Performance
| Standard |
IEEE 802.3z 1000BASE-SX |
| Data Rate |
1.25 Gbps |
| Wavelength |
850nm |
| Maximum Distance (50µm MMF) |
550m |
| Maximum Distance (62.5µm MMF) |
220m |
| Fibre Type |
Multi-Mode Fibre (MMF) |
Interface
| Form Factor |
SFP (Small Form-Factor Pluggable) |
| Connector Type |
Duplex LC |
| Hot-Pluggable |
Yes |
Electrical
| Supply Voltage |
3.1 to 3.5V |
| Maximum Voltage |
6.0V |
| Maximum Current |
300mA |
| Optical Receiver Sensitivity |
-18dBm (maximum) |
Physical
| Dimensions (W × D × H) |
13.4mm × 56.4mm × 10.35mm (0.53in × 2.22in × 0.41in) |
Compliance & Safety
| Laser Safety |
Class 1 Laser, EN 60825-1, FDA 21 CFR 1040.10 & 1040.11 |
| RoHS Compliant |
Yes |
Warranty
| Warranty Period |
2-Year Limited Warranty |
| Technical Support |
Free Technical Support |
Specifications are sourced from the manufacturer product page and may be updated.
