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DFE-861/A
D-Link 1 port 10/100Base-TX to 100Base-FX 100M Ethernet phot...
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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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An educational institution extends its Ethernet backbone 15 km to a remote research facility using a pair of DFE-861/A D-Link 1 port 10/100Base-TX to 100Base-FX photoelectric converters (single-mode single-fiber SC interface, TX 1310nm/RX 1550nm). This setup delivers a reliable 100 Mbps link, immune to EMI and ground-loop issues, while reusing existing single-fiber infrastructure. Outcome: centralized network management, lower CAPEX, and uninterrupted connectivity between campus sites.
A municipal security department deploys high-resolution IP cameras across a 12 km stretch of arterial roads using DFE-861/A converter pairs. The single-mode single-fiber SC interface (TX 1310nm/RX 1550nm) supports up to 100 Mbps for video streams, eliminating signal degradation over long distances. Benefit: real-time monitoring with minimal latency, simplified fiber cabling, and future-proof scalability for additional camera nodes.
A manufacturing plant links its central control room with a hazardous production area 8 km away via DFE-861/A D-Link photoelectric converters (1 port 10/100Base-TX to 100Base-FX, single-mode single-fiber SC, TX 1310nm/RX 1550nm). The fiber link safeguards against electrical surges and EMI, providing secure 100 Mbps data exchange for PLCs and safety sensors. Result: enhanced operational safety, deterministic performance, and cost-effective fiber extension without the need for repeaters.
To get the detailed certification, please go to the Compliance Center.
 DFE-861/A |  DGE-891/A |  DMC-300SC |  DMC-515SC |  DGE-894/B | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP+ | SFP+ | SFP | SFP+ | QSFP |
| Data Rate | 40G | 10G | 1G | 10G | 100G |
| Connector Type | MPO | LC | SC | LC | LC |
| Wavelength | 850nm | 1310 nm | 850nm | 850 nm | 1310 nm |
| Transmission Distance | Short-Range | Long-Range | Short-Range | Short-Range | Short-Range |
| Fiber Type | Multi-mode | Single-mode | Multi-mode | Multi-mode | Multi-mode |
| Max Distance | 100 meters | 80 km | 300 meters | 300 meters | 150 meters |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Network Interface | Fiber | Fiber | Ethernet | Fiber | Fiber |
| Power Consumption | 6.0W | 3.5W | 3.5W | 2.5W | 4.5W |
| 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-861/A High-Performance QSFP+ Transceiver | DGE-891/A High-Performance Long-Range 10G SFP+ Transceiver | DMC-300SC Digital Media Converter | DMC-515SC 10GBASE-SR SFP+ Transceiver | DGE-894/B QSFP 100G Short Range Transceiver |
| Height | 0.5 inches | 0.7 inches | 0.45 inches | 0.13 inches | 0.35 inches |
| Width | 0.5 inches | 0.6 inches | 1.20 inches | 0.59 inches | 0.82 inches |
| Depth | 1.5 inches | 1.2 inches | 1.70 inches | 0.87 inches | 1.30 inches |
| Weight | 0.05 lbs | 0.05 lbs | 0.10 lbs | 0.15 lbs | 0.15 lbs |
Single fiber fast Ethernet converter performed reliably over our long run. Stable SC link and consistent connectivity.
Installed as a pair and it worked immediately. No drops observed.
Good solution for extending 100M over fiber. Easy setup.
Reliable conversion with consistent performance.
Dependable media converter for business networks.
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.
The RJ-45 port supports standard Cat 5e/6 UTP cables with auto-MDI/MDI-X for 10/100 Mbps connectivity.
The converter supports a maximum link distance of 20 km using single-mode fiber at 1310 nm transmit and 1550 nm receive.
The DFE-861/A transmits at 1310 nm and receives at 1550 nm for optimized single-mode fiber performance.