LevelOne SFP-3841 1.25Gbps Copper SFP Transceiver with RJ45 Interface, 100m

The LevelOne SFP-3841 is a high-performance 1.25Gbps Copper SFP Transceiver designed to provide flexible connectivity for Gigabit Ethernet networks. This module converts a standard 1000BASE-X optical SFP port into a copper 1000BASE-T RJ45 interface, allowing for reliable data transmission over unshielded twisted-pair Category 5 cabling at distances of up to 100 meters.

Advantages

This transceiver offers significant versatility for system designers by enabling the use of copper cabling in environments where optical fiber is not required or available. It features a hot-pluggable design, allowing for installation or replacement without powering down the host network equipment. The fully metallic enclosure ensures low electromagnetic interference, while the low power dissipation contributes to efficient operation. Furthermore, it supports an extended operating temperature range, making it suitable for various professional networking environments.

Suitable for

• Connecting network switches and routers via copper cabling
• Extending Gigabit Ethernet networks up to 100 meters
• Upgrading optical SFP ports to RJ45 copper interfaces

When it may not be suitable

This module is designed specifically for 1000BASE-T operation and may not be compatible with devices requiring different data rates or non-standard interfaces. It is not intended for long-distance transmission beyond the 100-meter limit of copper Ethernet technology.

Key specifications

• Data transfer rate: 1250 Mbit/s
• Interface: RJ45 to SFP
• Maximum reach: 100 meters
• Input voltage: 3.3 V
• Operating temperature: 0°C to 70°C
• Power consumption: 1.05 W typical

How to use

To install the LevelOne SFP-3841, ensure your network device is powered on if it supports hot-swapping, or power it down according to the manufacturer's instructions. Insert the transceiver into an available SFP slot on your switch or router until it clicks into place. Once installed, connect a standard Category 5 or higher Ethernet cable into the RJ45 port of the transceiver. The device will automatically negotiate the link with the connected hardware.

What to consider before purchase

• Verify that your network switch or router supports 1000BASE-T copper SFP modules
• Ensure the cabling used is Category 5 or better to maintain the 100-meter range
• Check the available SFP port compatibility on your host device

Usage recommendations

For optimal performance and to prevent potential damage, ensure the module is fully seated in the SFP slot and avoid bending the connected Ethernet cable at sharp angles near the RJ45 port.