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DGE-891/A
D-Link 1 port 10/100/1000Base-T to 1000Base-LX Gigabit Ether...
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DGE-891/A is a high-performance SFP+ transceiver engineered to deliver 10G data rate connectivity using an LC connector. Designed for long-range applications, this transceiver supports Ethernet protocols and is ideally suited for environments such as data centers, enterprise networks, and telecom infrastructures.
The DGE-891/A transceiver features an SFP+ form factor with compact physical dimensions that facilitate easy integration into networking equipment. Its robust design ensures reliable performance over extended distances while meeting the rigorous demands of modern high-speed communication systems.
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A large university connects two academic buildings 15 km apart over existing single-mode fiber. Installing a pair of DGE-891/A Gigabit Ethernet photoelectric converters (TX:1310 nm/RX:1550 nm, SC interface) provides seamless 10/100/1000 Mbps copper-to-fiber conversion. Outcome: High-speed, low-latency backbone extension with up to 20 km reach, ensuring reliable campus-wide data, video and VoIP services without costly fiber re-run.
A municipal authority deploys 4K IP cameras at a remote traffic junction 18 km from the central NVR. Pairing DGE-891/A converters with DMC-1100 media converters delivers a robust 1 Gbps fiber link over single-mode cable. Outcome: Uninterrupted, high-definition video streaming with EMI immunity and secure galvanic isolation, reducing maintenance costs and maximizing public safety.
An oil refinery links its control room and field sensors across a hazardous zone spanning 12 km. A pair of DGE-891/A converters provides galvanic isolation and fiber-based Gigabit Ethernet over single-mode SC-interface cable. Outcome: Enhanced network resilience and EMI resistance, safeguarding critical process control data and minimizing downtime in corrosive environments.
| DGE-891/A |  DGE-894/B |  DFE-850 |  DEM-432XT |  DGE-894/A | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP+ | QSFP | SFP | QSFP+ | QSFP |
| Data Rate | 10G | 100G | 10G | 100G | 100G |
| Connector Type | LC | LC | LC | LC | LC |
| Wavelength | 1310 nm | 1310 nm | 1310 nm | 1310nm | 1310 nm |
| Transmission Distance | Long-Range | Short-Range | Long-Range | Long-Range | Long-Range |
| Fiber Type | Single-mode | Multi-mode | Single-mode | Single-mode | Single-mode |
| Max Distance | 80 km | 150 meters | 80 km | 80 km | 80 km |
| Supported Protocols | Ethernet | Ethernet | Ethernet, Fibre Channel | Ethernet, Fibre Channel | Ethernet |
| 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 |
| 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 | Cisco / Juniper / Huawei / Arista |
| Product Name | DGE-891/A High-Performance Long-Range 10G SFP+ Transceiver | DGE-894/B QSFP 100G Short Range Transceiver | DFE-850 Optical Transceiver Module | DEM-432XT High-Speed Optical Transceiver | DGE-894/A High-Performance QSFP Transceiver |
| Height | 0.7 inches | 0.35 inches | 0.13 inches | 0.33 inches | 1.0 inches |
| Width | 0.6 inches | 0.82 inches | 0.59 inches | 0.78 inches | 0.7 inches |
| Depth | 1.2 inches | 1.30 inches | 0.34 inches | 1.0 inches | 0.9 inches |
| Weight | 0.05 lbs | 0.15 lbs | 0.04 lbs | 0.25 lbs | 0.15 lbs |
Single fiber gigabit converter works reliably over long distance. Stable link and clean SC connection in production.
Used as a pair for a remote building. Link stays solid and throughput is consistent.
Good converter for extending gigabit over fiber. Setup was straightforward.
Reliable performance with no drops. Useful for site to site connectivity.
Consistent conversion and dependable operation for enterprise use.
The DGE-891/A is a 1-port Gigabit Ethernet converter that converts 10/100/1000Base-T to 1000Base-LX over single-mode, single-fiber with SC interfaces.
It supports single-mode, single-fiber transmission for long-distance Gigabit Ethernet links.
It delivers reliable data transmission up to 20 kilometers over single-mode fiber.
It transmits at 1310 nm and receives at 1550 nm for optimal single-fiber performance.
It features one RJ45 10/100/1000Base-T port and one SC 1000Base-LX fiber interface.
For a complete fiber link, two units of DGE-891/A are required, though each module can function independently for diagnostics.
Yes, the DGE-891/A can be installed in D-Link’s DMC-1100 media converter chassis for centralized power and management.
Yes, the RJ45 port supports full-/half-duplex and 10/100/1000 Mbps auto-negotiation.
It uses an SC-style female connector for single-mode fiber connections.
The converter accepts a standard 5 V DC external power adapter or can draw power from the DMC-1100 chassis.
LEDs indicate power, copper link/activity, fiber link/activity, and transmission status.
It operates in temperatures from 0 °C to 50 °C (32 °F to 122 °F) for indoor deployments.
It is ideal for extending Gigabit Ethernet over long distances in campus, metro, and surveillance networks.
The official SKU is DGE-891/A for the 10/100/1000Base-T to 1000Base-LX converter.
Yes, it supports LFP to detect and propagate link failures between copper and fiber segments.
Yes, optical isolation and fiber connectivity eliminate EMI issues common in industrial settings.
United States