DFE-851 - D-Link Optical Transceivers
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DFE-851
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DFE-851 Overview
D-Link 1 port 100Base-TX to 100Base-FX 100M Ethernet photoelectric converter, simple version, single-mode dual-fiber, SC interface, maximum transmission 15Km, wavelength 1310nm DFE-851
Overview
D-Link 1 port 100Base-TX to 100Base-FX 100M Ethernet photoelectric converter, simple version, single-mode dual-fiber, SC interface, maximum transmission 15Km, wavelength 1310nm
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Specification
DFE-851 Specification
D-Link 1 port 100Base-TX to 100Base-FX 100M Ethernet photoelectric converter, simple version, single-mode dual-fiber, SC interface, maximum transmission 15Km, wavelength 1310nm
Frequently Asked Questions
What is the primary function of the D-Link DFE-851 media converter? +
The DFE-851 is a compact photoelectric converter designed to bridge copper and fiber networks. It specifically converts 100Base-TX Fast Ethernet signals into 100Base-FX fiber optic signals, allowing you to extend your network reach over single-mode fiber cabling while maintaining reliable 100Mbps throughput.
What fiber cabling type and interface does the DFE-851 support? +
This unit is designed for single-mode dual-fiber applications. It features a standard SC interface, which is widely recognized for its secure and stable connections in fiber optic infrastructure, ensuring physical layer integrity for your 100Base-FX uplink connections.
What is the maximum distance the DFE-851 can transmit data? +
The DFE-851 is engineered to support long-distance connectivity up to 15 kilometers. This makes it an ideal solution for connecting remote network segments or linking different building facilities without signal degradation, provided the fiber run remains within the specified distance limit.
Does the DFE-851 operate at a specific wavelength? +
Yes, this converter operates at a 1310nm wavelength. This is a standard wavelength for single-mode fiber transmissions, ensuring compatibility with most 100Base-FX network equipment used in enterprise and industrial fiber optic deployments.
What deployment scenarios are best suited for this D-Link converter? +
The DFE-851 is perfect for scenarios requiring a simple, reliable point-to-point extension of an Ethernet network. It is commonly deployed to connect campus buildings, remote security cameras, or data closets that exceed the 100-meter limitation of standard copper Ethernet cabling.
Is the DFE-851 managed or unmanaged? +
This is a simple, unmanaged version of the D-Link media converter. It is designed for 'plug-and-play' functionality, requiring no complex configuration or management software. This simplifies deployment for technicians who need an immediate, transparent conversion between copper and fiber interfaces.
What kind of hardware setup does the DFE-851 require? +
The DFE-851 provides a straightforward physical setup. It features one 100Base-TX RJ45 copper port and one 100Base-FX SC fiber port. Because it acts as a photoelectric signal bridge, you simply connect your copper source to the RJ45 port and your fiber optic link to the SC interface to establish connectivity.
Can I use the DFE-851 with multi-mode fiber optic cabling? +
The DFE-851 is specifically optimized for single-mode fiber. While the SC interface may physically accept different fiber connectors, using multi-mode fiber with this single-mode device will not yield the intended performance or reach, as the transmission characteristics of single-mode and multi-mode fiber differ significantly.
How can I obtain a bulk quote for multiple DFE-851 units? +
Purchasing in volume is simple at BuyRouterSwitch.com. For enterprise-level procurement or large-scale project deployments, please contact our dedicated sales team directly through our website. We provide tailored pricing and streamlined procurement support to ensure your bulk orders are handled efficiently and meet your project timelines.
Why should I choose BuyRouterSwitch.com for D-Link hardware? +
BuyRouterSwitch.com is a trusted source for networking hardware, committed to providing authentic equipment for your critical infrastructure. By choosing us, you benefit from a secure ordering platform and a professional team focused on helping you find the exact D-Link components you need to maintain a robust and compliant network environment.

















