
Safe checkout
Secure payments
Fast dispatch
1–2 day handling
Free shipping
U.S. ground
Warranty & RMA
Support after delivery
Transition J/FE-CF-03-EU 100BFX ST 100BFX Twisted Pair Media Converter
- Fast Ethernet Media Converter
- Converts 100BASE-TX (Twisted Pair) to 100BASE-FX (Fiber)
- Features ST fiber connectors
- Supports Multimode Fiber (MMF)
- Extends network distance up to 2 km
- Compact, standalone unit for easy deployment
J/FE-CF-03-EU isn't on our shelf today — we source it to order. Request a quote and we'll confirm price and lead time within one business day.
Key specifications
See full specs ↓- Product Type
- Media Converter
- Copper Port Speed
- 100 Mbps
- Fiber Port Speed
- 100 Mbps
- Copper Connector
- RJ45
- Fiber Connector
- ST
- Fiber Type
- Multimode
Product details
The Transition J/FE-CF-03-EU is a Fast Ethernet media converter that connects 100BASE-TX twisted pair networks to 100BASE-FX fiber optic networks. It features ST connectors and supports multimode fiber for extended reach.
Technical Information
| Product Type | Media Converter |
| Copper Port Speed | 100 Mbps |
| Fiber Port Speed | 100 Mbps |
| Copper Connector | RJ45 |
Additional Specifications
| Fiber Connector | ST |
| Fiber Type | Multimode |
| Max Fiber Distance | 2 km |
Description
The Transition J/FE-CF-03-EU is a Fast Ethernet media converter designed to bridge copper-based twisted-pair networks with fiber optic networks. It specifically translates signals between 100BASE-TX Ethernet over UTP (Unshielded Twisted Pair) cabling and 100BASE-FX Ethernet over fiber optic cabling. This functionality is essential for extending network reach beyond the standard 100-meter limit of copper Ethernet, enabling connectivity across larger facilities, between buildings, or in environments where electromagnetic interference is a concern. This converter utilizes a standard RJ45 connector for its 100BASE-TX copper interface, supporting 100 Mbps Fast Ethernet speeds. The fiber optic interface employs ST connectors, a common and reliable physical interface for fiber optic networks. The J/FE-CF-03-EU is designed for multimode fiber, which is typically used for shorter to medium-distance fiber optic links, commonly extending up to 2 kilometers. This makes it a suitable solution for intra-building or campus area networking. Equipped with diagnostic LEDs, the J/FE-CF-03-EU provides visual feedback on the operational status of both the copper and fiber links, as well as power and activity. Its standalone, compact form factor allows for flexible deployment options, whether placed on a desktop or installed in a wiring closet. The plug-and-play nature of the device simplifies installation, making it a practical choice for network administrators seeking to expand their network infrastructure efficiently.
Condition: Refurbished
Free U.S. ground shipping
Typically 1–2 days handling, 3–7 days in transit.
Purchase orders accepted
Government, enterprise, data center and small business.
Buying 10+ units?
Get volume pricing and availability for J/FE-CF-03-EU.

-NA%20J_FE-CF-03%20SC%20100BFX%20Media%20Conv.webp?width=1920&quality=75)
-EU%20100BFX%20UTP%20Fiber%20Media%20Converte.webp?width=1920&quality=75)


%20Just%20Convert-IT%20Stand-Alone%20SC%2010.webp?width=1920&quality=75)