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  •   Optical / copper integrated converter | SFP → RJ45 | 10/100/1000 Mbps | 1.25 Gb/s | Hot-plug function | metal enclosure

    Optical / copper integrated converter | SFP → RJ45 | 10/100/1000 Mbps | 1.25 Gb/s | Hot-plug function | metal enclosure

    Code: SM220
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    An SFP converter designed to convert an optical (SFP) interface into a standard copper LAN (RJ45) connection. This module allows easy connection of network equipment with an SFP slot to a conventional Ethernet cable (Cat 5 / Cat 5e), ensuring stable and reliable data transmission up to 1.25 Gb/s in both directions.

    Thanks to hot-plug support, low power consumption, and a fully metal enclosure, the converter is an excellent solution for home networks as well as professional IT, industrial, and infrastructure projects. 

  • Product description

    Technical Specifications

    Type: Optical-to-copper converter (SFP → RJ45)
    Model: SM220
    Manufacturer: CUDY
    Data transfer rate: up to 1.25 Gb/s, bidirectional
    Supported standards: IEEE 802.3; 10/100/1000BASE-T; 1000BASE-X
    Interfaces: SFP-T → RJ45
    Ethernet transmission: 1.25 Gb/s over Cat 5 cable
    Power supply: +3.3 V
    Power consumption: ~1.05 W (typical)
    Operating temperature: 0 °C … +70 °C
    Enclosure: fully metal (reduced EMI)
    Compliance: RoHS, lead-free
    Hot-pluggable: yes
    Link indication: via RX_LOS pin
    TX_DISABLE: supported (used for IC reset function)

    Functions

    Conversion of optical SFP port to copper RJ45 (LAN)
    Automatic operation in 10 / 100 / 1000 Mbps modes
    Stable Gigabit Ethernet connection over standard network cable
    Hot-plug support – installation and replacement without powering off
    Reliable operation due to reduced EMI thanks to metal enclosure
    Low power consumption – suitable for 24/7 operation

    Applications

    For home users: Connecting fiber networks to routers or switches with SFP slots, simple solution to convert SFP to LAN, suitable for home servers, NAS, IP cameras, and network expansion
    For IT specialists / engineers: Suitable for data centers, server rooms, backbone solutions, compatible with Gigabit Ethernet and 1000BASE-X interfaces, stable and predictable operation according to SFP MSA standard, easy diagnostics via RX_LOS and TX_DISABLE pins
    For electricians / system integrators: Fast and reliable solution where RJ45 output from an SFP slot is required, suitable for switches, routers, and industrial networks, metal enclosure provides improved resistance to electromagnetic interference

    Pros

    Up to 1.25 Gb/s bidirectional transmission
    Automatic support for 10/100/1000 Mbps
    Hot-plug – no need to power down equipment
    Metal enclosure – reduced EMI interference
    Low power consumption (~1.05 W)
    Wide compatibility with SFP equipment

    Cons

    Designed only for copper (RJ45) connection, not SFP–SFP optical links
    Operating temperature up to +70 °C (not suitable for extreme outdoor conditions) 

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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