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- Name:
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DFE-861/A
- Description:
- D-Link 1 port 10/100Base-TX to 100Base-FX 100M Ethernet photoelectric converter, single-mode single-fiber, SC interface, TX: 1310/RX: 1550nm, maximum transmission 20km, need to be used in pairs
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DFE-861/A Overview
DFE-861/A is a QSFP+ transceiver module that supports a 40G data rate and features an MPO connector ideal for short-range transmission over multi-mode fiber. Designed with a compact form factor and precise physical dimensions, it meets the rigorous demands of modern data centers, enterprise networks, and telecom applications while reliably supporting Ethernet protocols.
Engineered for high performance and optimized for dense network environments, DFE-861/A offers low power consumption and robust signal integrity within a controlled operating temperature range. Its proven compatibility with major industry platforms including Cisco, Juniper, Huawei, and Arista makes it an excellent choice for both system upgrades and new installations.
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Explore more options from Transceivers or explore other D-Link products.
DFE-861/A Specifications
| Product Type | Transceiver |
| Form Factor | QSFP+ |
| Data Rate | 40G |
| Connector Type | MPO |
| Wavelength | 850nm |
| Transmission Distance | Short-Range |
| Fiber Type | Multi-mode |
| Max Distance | 100 meters |
| Supported Protocols | Ethernet |
| Network Interface | Fiber |
| Power Consumption | 6.0W |
| Operating Temperature | 0 to 70°C |
| Storage Temperature | -40 to 85°C |
| Input Voltage | 3.3V |
| Compatibility | Cisco / Juniper / Huawei / Arista |
| Product Name | DFE-861/A High-Performance QSFP+ Transceiver |
| Height | 0.5 inches |
| Width | 0.5 inches |
| Depth | 1.5 inches |
| Weight | 0.05 lbs |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|---|---|---|---|---|---|
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | N/A |
| Connector Type | MPO | LC | LC | LC | LC |
| Data Rate | 40G | 10G | 1G | 10G | 1G |
| Depth | 1.5 inches | N/A | 1.30 inches | 0.87 inches | N/A |
| Fiber Type | Multi-mode | Single-mode | Multi-mode | Single-mode | Single-mode |
| Form Factor | QSFP+ | SFP+ | SFP | SFP | SFP |
| Height | 0.5 inches | N/A | 0.96 inches | 0.35 inches | N/A |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Max Distance | 100 meters | 80 km | 550 meters | 80 km | N/A |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 6.0W | N/A | 1.0W | 3.5W | N/A |
| Product Name | DFE-861/A High-Performance QSFP+ Transceiver | J4860C-1570-C | 407-BBOF-1P-C Optical Transceiver | 407-BBOV-C Optical Transceiver Module | SFP-1GE-LH-CWDM-1450-C |
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet | Ethernet, Fibre Channel | Ethernet | Ethernet, Fibre Channel | Ethernet |
| Transmission Distance | Short-Range | Long-Range | Short-Range | Long-Range | Long-Range |
| Wavelength | 850nm | 1570 nm | 850nm | 1310 nm | 1450 nm |
| Weight | 0.05 lbs | N/A | 0.12 lbs | 0.12 lbs | N/A |
| Width | 0.5 inches | N/A | 0.57 inches | 1.65 inches | N/A |
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Questions & Answers
Q
What is the D-Link DFE-861/A Ethernet media converter?
A
The DFE-861/A is a 1-port 10/100Base-TX to 100Base-FX single-mode fiber media converter designed to extend Ethernet links up to 20 km over a single SC fiber.
Q
Which cable types are supported on the 10/100Base-TX port?
A
The RJ-45 port supports standard Cat 5e/6 UTP cables with auto-MDI/MDI-X for 10/100 Mbps connectivity.
Q
What is the maximum single-mode fiber distance for the DFE-861/A?
A
The converter supports a maximum link distance of 20 km using single-mode fiber at 1310 nm transmit and 1550 nm receive.
Q
Which wavelengths does the DFE-861/A use for TX and RX?
A
The DFE-861/A transmits at 1310 nm and receives at 1550 nm for optimized single-mode fiber performance.
Q
What type of fiber connector does the DFE-861/A require?
A
It uses a standard SC simplex connector on the 100Base-FX port for single-fiber transmission.
Q
Do I need two DFE-861/A units to establish a link?
A
Yes, you must use a pair of DFE-861/A converters—one at each end of the single-fiber link—for bidirectional communication.
Q
What data rates are supported on both ports?
A
The media converter auto-negotiates 10/100 Mbps on the copper RJ-45 port and operates at 100 Mbps full-duplex on the fiber port.
Q
What LED indicators are available on the DFE-861/A?
A
LEDs include Link/Act and FDX/Col for the RJ-45 port and Link/Act for the fiber port to display port status and activity.
Q
Is the DFE-861/A compatible with existing network switches?
A
Yes, it interoperates seamlessly with IEEE 802.3u-compliant switches, routers, and NICs without additional configuration.
Q
What are the power requirements for the DFE-861/A?
A
The unit uses an external 5 V DC adapter and consumes under 3 W, making it energy-efficient for continuous operation.
Q
What is the operating temperature range for the converter?
A
The operating temperature range is 0 °C to 50 °C, with a storage range of –20 °C to 70 °C for reliable deployment.
Q
Which IEEE standards does the DFE-861/A comply with?
A
It fully complies with IEEE 802.3, IEEE 802.3u and meets Class II laser safety requirements for fiber optics.
Q
Can I mount the DFE-861/A on a DIN rail?
A
Yes, the converter supports optional DIN-rail mounting for industrial rack or panel installations.
Q
How easy is the installation of the DFE-861/A?
A
Installation is plug-and-play—simply connect power, attach copper and fiber cables, and the device auto-configures.
Q
What warranty and support does D-Link offer for the DFE-861/A?
A
D-Link provides a 3-year limited hardware warranty and unlimited lifetime technical support for the DFE-861/A.
Q
Where can I purchase the D-Link DFE-861/A converter?
A
The DFE-861/A is available through authorized D-Link distributors, resellers, and major online retailers.
