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Black Box LGC5151A Gigabit Ethernet Media Converter - 2x RJ-45 to 1x SC Duplex - Multi-Mode 850nm - 0. 55 km
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Product Features
Technical Overview
This media converter delivers full Gigabit Ethernet performance across both copper and fiber interfaces. The RJ-45 ports auto-negotiate to 10/100/1000 Mbps speeds, while the SC duplex port handles bi-directional fiber communication at 1000 Mbps. The 850 nm wavelength is optimized for cost-effective multi-mode fiber deployments, balancing performance and budget in typical LAN extensions.
Internal electronics ensure signal integrity during conversion, minimizing latency and packet loss. The converter supports jumbo frames and flow control, maintaining network efficiency under heavy loads. It operates on standard AC power, with built-in protection against voltage fluctuations and thermal overload.
This section brings together practical product details such as Total Number of Ports, Network (RJ-45), Number of Network (RJ-45) Ports, Media Type Supported, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
Key Product Advantages
The LGC5151A extends network reach efficiently by converting copper to fiber, overcoming distance limitations of twisted-pair cabling. Its dual RJ-45 ports allow daisy-chaining or connection of multiple copper devices, while the SC duplex port integrates seamlessly into fiber infrastructures.
Distance Extension
Supports fiber runs up to 0.55 km, far exceeding the 100-meter limit of standard Ethernet over copper.
- Eliminates need for repeaters
- Reduces cable clutter
Media Flexibility
Converts between cost-effective twisted pair and high-bandwidth fiber, enabling hybrid network designs.
- Uses existing copper wiring
- Future-proofs with fiber readiness
Compact Design
Small footprint saves space in network closets, racks, or industrial control panels.
- Easy to deploy in tight spaces
- Low power consumption
Deployment / Use Cases
This media converter is ideal for extending LAN segments between buildings, across campuses, or within large facilities where fiber is required for distance or EMI immunity. It connects copper-based switches, routers, or endpoints to fiber backbones, enabling scalable network expansion.
Common applications include linking remote offices via existing fiber runs, integrating industrial Ethernet devices in manufacturing plants, and connecting security cameras or access points over long distances. The converter also serves in data center environments to interface copper server connections with fiber aggregation switches.
Campus Networking
Connect buildings across a campus using multi-mode fiber, maintaining Gigabit speeds over 0.55 km.
- Uses existing fiber infrastructure
- Preserves network performance
Industrial Ethernet
Deploy in factories or warehouses to extend network reach to machinery and sensors, resisting electrical interference.
- Durable for harsh environments
- Supports real-time control systems
Physical Profile
The LGC5151A features a compact, desktop-friendly enclosure measuring 4.75" wide, 4.52" deep, and 1.36" high. Its small form factor allows flexible placement on shelves, in racks with optional mounting kits, or alongside other network gear. The sturdy construction ensures reliable operation in varied environments, from climate-controlled server rooms to industrial settings.
- Width
- 4.75" (120.65 mm)
- Depth
- 4.52" (114.81 mm)
- Height
- 1.36" (34.54 mm)
- Length
- 850 nm
Highlights
- Converts Gigabit Ethernet between copper and multi-mode fiber
- Supports distances up to 0.55 km over 850 nm fiber
- Two RJ-45 ports for connecting multiple copper devices
- One SC duplex port for fiber uplink
- Auto-negotiates 10/100/1000 Mbps speeds on copper side
- Compact design for space-constrained deployments
- AC-powered for reliable operation
- Compliant with RoHS and WEEE environmental standards
- TAA compliant for government and educational procurement
- Backed by a 6-year limited warranty
Specifications
| Specifications | |
|---|---|
| Manufacturer | Black Box Corporation |
| Manufacturer Part Number | LGC5151A |
| Brand Name | Black Box |
| Product Line | Compact |
| Product Name | Gb ETH MED CONV 2-10/100/1000 COP 100/1000 MM FBR 850nm 0.5km SC |
| Product Type | Transceiver/Media Converter |
| Interfaces/Ports | |
| Total Number of Ports | 3 |
| Network (RJ-45) | Yes |
| Number of Network (RJ-45) Ports | 2 |
| Number of SC Ports | 1 |
| SC Port Type | Duplex |
| Media & Performance | |
| Media Type Supported | Twisted Pair,Optical Fiber |
| Fiber Mode Supported | Multi-mode |
| Fiber Optic Cable Wavelength | 850 nm |
| Maximum Distance Supported | 0.55 km (0.34 Mile) |
| Network & Communication | |
| Ethernet Technology | Gigabit Ethernet |
| Network Technology | 10/100/1000Base-T |
| Power Description | |
| Power Source | AC |
| Physical Characteristics | |
| Height | 1.36" (34.54 mm) |
| Width | 4.75" (120.65 mm) |
| Depth | 4.52" (114.81 mm) |
| Miscellaneous | |
| Environmentally Friendly | Yes |
| Environmental Compliance | Waste Electrical and Electronic Equipment Directive (WEEE),Restriction of Hazardous Substances (RoHS) |
| Country of Origin | Taiwan |
| TAA Compliant | Yes |
| Warranty | |
| Limited Warranty | 6 Year |
User Manual
FAQ
What does this media converter do?
The Black Box LGC5151A converts Gigabit Ethernet signals between standard twisted-pair copper cabling (RJ-45) and multi-mode fiber optic cabling (SC duplex). This allows network segments to extend beyond the 100-meter limit of copper, supporting distances up to 0.55 km over fiber while maintaining 10/100/1000 Mbps speeds.
What types of fiber does it support?
This converter supports multi-mode fiber optic cabling with an 850 nm wavelength. It is compatible with standard multi-mode fiber connectors (SC duplex) and is designed for use in typical LAN extensions where multi-mode fiber offers a cost-effective balance of performance and distance.
How many devices can I connect to the copper ports?
The converter has two RJ-45 ports, allowing direct connection of two copper-based devices such as computers, switches, or IP cameras. These ports auto-negotiate speed and duplex, supporting 10/100/1000 Mbps Ethernet. For connecting more devices, you can daisy-chain through an additional switch connected to one port.
What is the maximum distance supported over fiber?
The LGC5151A supports fiber runs up to 0.55 km (0.34 miles) when using multi-mode fiber at 850 nm. This distance is significantly longer than the 100-meter maximum for standard Ethernet over copper, making it suitable for connecting buildings or remote network segments without signal degradation.
Does it require any special configuration?
No, the converter is plug-and-play with no configuration needed. It auto-negotiates speed and duplex settings on the copper ports, and the fiber port operates at fixed Gigabit parameters. Simply connect power, attach copper and fiber cables, and it begins converting signals transparently.
What power source does it use?
The converter uses standard AC power via an included power adapter. It is designed for continuous operation in network environments, with built-in protection against power surges and overheating. The AC power input ensures reliable performance without relying on PoE or other network-based power.
| Qty | Price | Available |
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