Certificates
Certification	MSA, RoHS
Features
Product colour	Metallic
Hot-Plug support
Hot-swap
Logistics data
Shipping (inner) case length	36 cm
Shipping (inner) case width	26 cm
Shipping (inner) case height	31 cm
Shipping (inner) case net weight	3.2 kg
Products per shipping (inner) case	50 pc(s)
Pallet gross weight (air)	246.8 kg
Master (outer) cases per pallet (air)	54 pc(s)
Products per pallet (air)	2700 pc(s)
Pallet gross length	102 cm
Pallet gross width	122 cm
Pallet height (air)	199 cm
Pallet gross weight (sea)	246.8 kg
Master (outer) cases per pallet (sea)	54 pc(s)
Products per pallet (sea)	2700 pc(s)
Pallet height (sea)	199 cm
Shipping (inner) case gross weight	4.2 kg
Harmonized System (HS) code	85177900
Operational conditions
Operating temperature (T-T)	0 - 70 °C
Storage temperature (T-T)	-40 - 85 °C
Other features
Dimensions (WxDxH)	29.8 x 11.8 x 56.3 mm
I/O ports	mini-GBIC
Packaging data
Package width	74 mm
Package depth	131 mm
Package height	49 mm
Package weight	64 g
Performance
SFP transceiver type	Fiber optic
Maximum data transfer rate	1250 Mbit/s
Interface type	SFP
Fiber optic connector	LC
SFP transceiver standard	LX
Maximum transfer distance	10000 m
Wavelength	1310 nm
Ethernet interface type	Gigabit Ethernet
Networking standards	IEEE 802.3z
Cabling technology	1000Base-LX
Duplex system	Full
Single-mode fiber (SMF) supported
Multi-mode fiber (MMF) supported
Power
Maximum voltage	3.3 V

The D-Link DEM-310GT is an SFP module (Small Form-factor Pluggable) for use in Gigabit-Ethernet switches and other network devices with SFP slots. It serves as an optical transceiver for data transmission over fiber optic cables and enables a Gigabit-Ethernet connection with a maximum data transfer rate of 1250 Mbit/s. The module is specifically designed for use with single-mode fiber (SMF), with a fiber core diameter of 9/125 µm. It supports the 1000Base-LX technology in accordance with the IEEE 802.3z standard, ensuring a stable and reliable network connection over long distances. The maximum transmission distance is 10,000 meters, making it suitable for applications in large enterprise networks, between buildings, or in industrial environments. The optical cable connector is of type LC-Duplex, ensuring a secure and precise connection with corresponding fiber optic cables.

Applications

The DEM-310GT is suitable for use in networks requiring high bandwidth and long transmission distances. Typical application scenarios include connecting switches in different buildings, extending LAN infrastructures over large distances, or integrating into industrial networks where a robust and interference-resistant connection is required. The use of single-mode fiber ensures low attenuation and high signal quality, which is particularly advantageous over long distances. The module is intended for use in Gigabit- and Fast-Ethernet switches that feature SFP slots.

Functions and Features in Detail

The module supports full-duplex operation, meaning data can be transmitted simultaneously in both directions without affecting transmission rates. The maximum data rate of 1250 Mbit/s is achieved through the combination of Gigabit-Ethernet technology and 1000Base-LX standardization. The module is hot-swappable, meaning it can be replaced without interrupting network operation, significantly simplifying network maintenance and expansion. Power supply is provided by the network device with a maximum voltage of 3.3 V. The flow control function according to IEEE 802.3x ensures stable data transmission by preventing overloads caused by buffer overflow.

Technology Explained Simply

The DEM-310GT uses SFP technology, which provides a compact and standardized form for network transceivers. These modules are integrated into many modern switches and router systems, enabling flexible expansion of network infrastructure. The wavelength of 1310 nm is typical for single-mode fiber and ensures high signal quality over long distances. The use of LC-Duplex connectors enables a secure and precise mechanical connection with fiber optic cables. The MSA certification (Multi-Source Agreement) ensures compatibility with other SFP modules from different manufacturers, increasing interchangeability and flexibility. The module is RoHS-compliant, meaning it is manufactured without harmful substances.

Compatibility and Accessories

The module is designed for use in devices with SFP slots, particularly in Gigabit- and Fast-Ethernet switches. It is specifically designed for single-mode fiber and does not support multi-mode fiber. Compatible accessories available in our range include the SFP module D-Link DEM-311GT, which is designed for multi-mode fiber. Combining both modules enables flexible network design, depending on whether the connection is over short distances (multi-mode) or long distances (single-mode).

Installation and Mounting

Installation is performed by simply inserting the module into the SFP slot of the network device. Due to the hot-plug function, the module can be inserted or replaced while the device is operating, without interrupting network operation. The mechanical fit and electrical connection are designed to ensure a secure and reliable connection. The module dimensions are 29.8 x 11.8 x 56.3 mm, reflecting the compact design of the SFP format.

Operational Advantages

The DEM-310GT provides a reliable and high-performance connection over long distances, with the use of single-mode fiber ensuring high signal quality and low attenuation. The hot-swap function enables flexible network management, as modules can be replaced without network downtime. MSA compliance increases compatibility with various devices and manufacturers. The operating temperature range of 0 to 70 °C makes the module suitable for use in a wide range of environments, including industrial facilities. The storage temperature range of -40 to 85 °C demonstrates the module’s robustness even under extreme conditions.

Product Color and Design

The module features a metallic surface, typical for SFP modules, providing good heat dissipation and mechanical stability. The compact design fits into all standard SFP slots and allows dense placement in switches and other network devices.

Certifications and Standards

The module complies with the IEEE 802.3z and IEEE 802.3x standards, ensuring compatibility with Gigabit-Ethernet networks and support for flow control functions. Certification according to MSA guarantees interoperability with other SFP modules from different manufacturers. RoHS compliance indicates that the module is manufactured without harmful substances.

Operating Conditions

The module can be operated at temperatures from 0 to 70 °C, making it suitable for use in indoor environments and controlled industrial settings. The storage temperature range of -40 to 85 °C allows for safe storage under various conditions.

Additional Connectors

The module features a mini-GBIC connector, designed for connection with fiber optic cables equipped with LC-Duplex connectors. This connector is standard in SFP modules and enables a secure and precise connection.

Product Type and Manufacturer

The D-Link DEM-310GT is an SFP transceiver module for Gigabit-Ethernet applications. It is manufactured by D-Link and is specifically designed for use in networks with single-mode fiber. The module designation DEM-310GT is the manufacturer’s part number and uniquely identifies the product.