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Small silver SFP transceiver module with side label and gold contacts

Perle

Perle SMI-100-S1ST20D SFP transceiver 10/100Base-T 100Base-BX-D

SKU CH-2QHX-QBZSW

A 10/100Base-T and 100Base-BX-D transceiver with AC-to-DC power adapter included

  • FeatureNetwork Technology:10/100Base-T Network Technology:100Base-B
  • Package ContentsSMI-100-S1ST20D Transceiver/Media Converter 100-240v AC, Reg
  • 10/100Base-T copper connectivity for standard Ethernet
  • 100Base-BX-D single-fibre optics extend links to 20 km
  • SFP form factor fits industry-standard switch slots
  • 100–240 V AC adapter powers unit worldwide
  • New Perle transceiver ships ready for immediate deployment

Perle SMI-100-S1ST20D SFP Transceiver

The Perle SMI-100-S1ST20D is a standalone SFP transceiver and media converter that supports 10/100Base-T copper and 100Base-BX-D single-fibre optics. It is designed for network administrators who need to extend Ethernet links over fibre without deploying a managed switch. The unit ships with a regulated 100-240v AC to DC power adapter for immediate desktop or rackmount use.

Distance and Speed Constraints

The 100Base-BX-D interface operates at 100 Mbps over a single strand of single-mode fibre using bidirectional wavelengths. Practical reach is limited to the standard 20 km associated with the BX-D designation, and auto-negotiation is restricted to 10/100Base-T on the copper side. No gigabit or 10-gigabit rates are supported, so the device cannot serve modern high-throughput uplinks.

Upgrade Path and Fit

This transceiver replaces a pair of separate media converters or a fixed copper-to-fibre switch port when only a single 100 Mbps fibre link is required. The jump is worth it for legacy building automation, security camera backhauls, or SCADA segments that already run at 100 Mbps and need fibre distance. It is not for networks that require gigabit speeds, SFP+ slots, or managed switching features such as VLAN tagging or link aggregation.

Highlights

  • 10/100Base-T copper connectivity for standard Ethernet
  • 100Base-BX-D single-fibre optics extend links to 20 km
  • SFP form factor fits industry-standard switch slots
  • 100–240 V AC adapter powers unit worldwide
  • New Perle transceiver ships ready for immediate deployment

Specifications

BrandPerle
ModelSMI-100-S1ST20D
FeatureNetwork Technology:10/100Base-T
Network Technology:100Base-BX-D
Package ContentsSMI-100-S1ST20D Transceiver/Media Converter
100-240v AC, Regulated DC Adapter

Questions about this item

Should I choose the copper or the fibre version of this transceiver?

The module combines both interfaces in one unit so no separate version choice is needed

What does the 100 Mbps fibre rating mean when the module is installed in a switch?

The single-mode fibre link operates at 100 Mbps full duplex with a 20 km reach

Which SFP standard does the SMI-100-S1ST20D follow and what distance does it support?

It follows the 100Base-BX-D standard and supports up to 20 km on single-mode fibre

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