Which fiber type and wavelength does the DFE-851 use?

Utilizes single-mode dual-fiber SC connectors at a central wavelength of 1310 nm for optimized long-distance Ethernet performance.

Does the DFE-851 support auto-negotiation?

Yes, it supports auto-negotiation on the 100Base-TX port to automatically set the correct speed and duplex mode.

How do I install the DFE-851?

Installation is plug-and-play: connect the RJ-45 port to a switch or NIC, attach single-mode SC fibers to the FX port and plug in a 5 V DC power adapter.

What power requirements does the DFE-851 have?

Requires an external 5 V DC power supply (5 W max), providing stable operation for the converter module.

How can I monitor link and activity status?

Three LEDs indicate Power, TX Link/Activity and FX Link/Activity, offering instant diagnostics of electrical and fiber connections.

What environmental conditions does the DFE-851 support?

Designed for 0 °C to 50 °C operating temperature and 5% to 95% non-condensing humidity for standard indoor deployments.

How does the DFE-851 ensure data integrity and safety?

Offers 1500 V DC electrical isolation between copper and fiber ports to protect against surges and guarantee signal quality.

Can the DFE-851 be used in telecom closets and server rooms?

Yes, its compact fanless metal housing fits standard telecom racks, server rooms and compact network closets.

What is the MTBF of the DFE-851?

Boasts an MTBF (Mean Time Between Failures) of over 500,000 hours, delivering high reliability for critical network applications.

How do I troubleshoot link issues on the DFE-851?

Verify proper fiber polarity, check LED indicators, test cable continuity and confirm matching speed/duplex settings on connected devices.

Is the DFE-851 backward-compatible with lower speeds?

It is optimized for 100 Mbps operation and does not support 10 Mbps connectivity on either the copper or fiber port.

What warranty and support does D-Link offer for the DFE-851?

Backed by D-Link’s limited lifetime warranty, 24/7 technical support and comprehensive online resources including user guides and firmware updates.

FEATURED DEAL

Name:

DFE-851

Name: 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
Brand: D-Link
SKU: DFE-851
Rating: 4.2 (5 reviews)

Description:: 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
Rating:: 4.2(5)
Added to cart 28 times recently
Availability:: In stock - Ready to Ship
Brand:: D-Link
GTIN:: 8859100267965
Condition:

Get a Quote

3 Year Extended Warranty

Same-day Shipping

14-Day Money Back Guarantee

Shipping:

Payment:

dfe-851 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

3 Year Extended Warranty

Same-day Shipping

14-Day Money Back Guarantee

Need Additional Discount on Product?

Request a quote below - Get Exclusive Pricing and Support.

Shipping:

Payment:

DFE-851

D-Link 1 port 100Base-TX to 100Base-FX 100M Ethernet photoel...

TRUSTED, TRIED, PROVEN

$5,000,000+

Inventory Delivered By

Officially Accredited

& Verified By

Next-Gen IT

Solutions Powered By

DFE-851 Overview

DFE-851 is a high-performance SFP transceiver engineered to deliver a reliable 10G data rate through an LC connector interface. It is designed for short-range transmission over single-mode fiber, making it ideal for use in data centers, enterprise networks, and telecom applications while supporting Ethernet protocols.

This compact transceiver features standardized physical dimensions and robust environmental tolerances to ensure dependable network performance. Its compatibility with top-tier vendors and optimized power consumption further establish the DFE-851 as a trusted solution for high-speed optical interconnects.

DFE-851 price is is available on request. Get immediate quote.

Request bulk order quote for DFE-851 for additional pricing. Browse the full D-Link Transceivers series or explore all D-Link products.

DFE-851 Specifications

Product Type: Transceiver
Form Factor: SFP
Data Rate: 10G
Connector Type: LC
Wavelength: 1310 nm
Transmission Distance: Short-Range
Fiber Type: Single-mode
Max Distance: 10 km
Supported Protocols: Ethernet
Network Interface: Fiber
Power Consumption: 3.5W
Operating Temperature: 0 to 70°C
Storage Temperature: -40 to 85°C
Input Voltage: 3.3V
Compatibility: Cisco, Juniper, Huawei, Arista
Product Name: DFE-851 10G SFP Transceiver
Height: 0.7 inches
Width: 0.5 inches
Depth: 0.9 inches
Weight: 0.1 lbs

DFE-851 Use Case

Remote SCADA System Networking in Oil & Gas Facilities

In pipeline monitoring sites located up to 12 km from the central control room, the DFE-851-D-Link 1 port 100Base-TX to 100Base-FX 100 M Ethernet photoelectric converter (simple version, single-mode dual-fiber, SC interface, 1310 nm) provides a stable, EMI-free fiber link. This deployment ensures real-time SCADA telemetry, minimizes signal loss over long distances, and enhances operational safety and asset reliability.

Multi-Building Enterprise Campus Backbone Extension

For corporate campuses spanning multiple buildings separated by up to 15 km, the DFE-851-D-Link 1 port 100Base-TX to 100Base-FX 100 M Ethernet photoelectric converter (simple version, single-mode dual-fiber, SC interface, 1310 nm) seamlessly extends existing networks over fiber. By converting copper RJ45 to single-mode fiber optics, it delivers high-speed, interference-resistant connectivity, simplifies infrastructure, and reduces operational costs while supporting core business applications.

Data Center Disaster Recovery Link over Metro Fiber

Between primary and secondary data centers located 14 km apart, the DFE-851-D-Link 1 port 100Base-TX to 100Base-FX 100 M Ethernet photoelectric converter (simple version, single-mode dual-fiber, SC interface, 1310 nm) establishes a dedicated, low-latency fiber link. This solution enables real-time replication of virtual workloads and backup data, ensuring business continuity, regulatory compliance, and rapid failover in disaster recovery scenarios.

Quality Certifications

To get the detailed certification, please go to the Compliance Center.

Product Comparison Table

	DFE-851	DMC-2000-PW-AC	DMC-1200	DMC-300SC	DEM-431XT
Product Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Form Factor	SFP	SFP+	SFP	SFP	XFP
Data Rate	10G	10G	10G	1G	10G
Connector Type	LC	LC	LC	SC	LC
Wavelength	1310 nm	1310 nm	1310 nm	850nm	1310 nm
Transmission Distance	Short-Range	Long-Range	Long-Range	Short-Range	Long-Range
Fiber Type	Single-mode	Single-mode	Single-mode	Multi-mode	Single-mode
Max Distance	10 km	10 km	80 km	300 meters	80 km
Supported Protocols	Ethernet	Ethernet	Ethernet	Ethernet	Ethernet, Fibre Channel
Network Interface	Fiber	Ethernet	Fiber	Ethernet	Fiber
Power Consumption	3.5W	3.8 W	3.5W	3.5W	3.5W
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Input Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Compatibility	Cisco, Juniper, Huawei, Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista
Product Name	DFE-851 10G SFP Transceiver	DMC-2000-PW-AC	DMC-1200 Optical Transceiver	DMC-300SC Digital Media Converter	DEM-431XT 10G XFP Optical Transceiver
Height	0.7 inches	0.87 inches	0.22 inches	0.45 inches	0.6 inches
Width	0.5 inches	0.55 inches	0.87 inches	1.20 inches	1.2 inches
Depth	0.9 inches	3.56 inches	1.1 inches	1.70 inches	1.8 inches
Weight	0.1 lbs	0.3 lbs	0.10 lbs	0.10 lbs	0.15 lbs

Reviews & Ratings

Gareth Whitman

Simple fiber converter that works reliably for long distance links.

Sadia Rehman

Stable connection once paired correctly. No dropouts experienced.

Hugh Lawson

Good value converter for extending Fast Ethernet.

Usman Khalil

Consistent signal quality across our link.

Paul Dennison

Reliable and easy to deploy.

Questions & Answers

What is the D-Link DFE-851 Ethernet photoelectric converter?

The DFE-851 is a 100Base-TX to 100Base-FX photoelectric converter featuring one 100 Mbps RJ-45 port and one single-mode dual-fiber SC port for up to 15 km at 1310 nm.

Which applications does the DFE-851 support?

It supports long-haul fiber connectivity for enterprise LANs, campus backbones, Metro Ethernet, video surveillance and industrial automation requiring reliable 100 Mbps links.

What interfaces are available on the DFE-851?

Equipped with one 100Base-TX RJ-45 copper port and one 100Base-FX SC fiber port, it facilitates seamless Ethernet-to-fiber conversion at 100 Mbps.

What is the maximum transmission distance of the DFE-851?

It delivers up to 15 kilometers of single-mode fiber transmission at 1310 nm without additional extenders or amplifiers.

Related Searches D-Link Transceivers

DFE-852 DFE-850 DFE-855 DFE-861/B DFE-861/A DMC-515SC DMC-300SC DGE-872

DFE-851 Overview

DFE-851 price is is available on request. Get immediate quote.

Request bulk order quote for DFE-851 for additional pricing. Browse the full D-Link Transceivers series or explore all D-Link products.

DFE-851 Specifications

Product Type

Transceiver

Form Factor

SFP

Data Rate

10G

Connector Type

Wavelength

1310 nm

Transmission Distance

Short-Range

Fiber Type

Single-mode

Max Distance

10 km

Supported Protocols

Ethernet

Network Interface

Fiber

Power Consumption

3.5W

Operating Temperature

0 to 70°C

Storage Temperature

-40 to 85°C

Input Voltage

3.3V

Compatibility

Cisco, Juniper, Huawei, Arista

Product Name

DFE-851 10G SFP Transceiver

Height

0.7 inches

Width

0.5 inches

Depth

0.9 inches

Weight

0.1 lbs