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Small rectangular network transceiver with metal casing and label

Perle

Perle S-100-S1ST20U 10/100Base-TX 100Base-BX-U transceiver

SKU CH-MNRT-TFX5E

Single-fibre transceiver converts 10/100Base-TX copper to 100Base-BX-U optics with included AC adapter

  • HighlightsNetwork Technology:10/100Base-TX Network Technology:100Base-
  • In the boxS-100-S1ST20U Transceiver/Media Converter 100-240v AC, Regul
  • Dual-rate copper and fibre connectivity via 10/100Base-TX and 100Base-BX-U
  • Up to 20 km single-fibre reach with BX-U wavelength pairing
  • Universal 100-240 V AC input with regulated DC adapter included
  • Compact media converter form factor for flexible deployment
  • Brand-new Perle unit, first listed by manufacturer in 2025

Perle S-100-S1ST20U Transceiver

The Perle S-100-S1ST20U is a single-strand fibre transceiver and media converter designed for 10/100Base-TX and 100Base-BX-U network links. It ships with a 100-240v AC regulated DC power adapter for immediate deployment in enterprise or campus environments. New condition ensures full manufacturer specification compliance.

Suits single-fibre 100 Mbps uplinks

This unit suits administrators extending Fast Ethernet over a single fibre strand using BX-U wavelengths. It does not suit networks requiring gigabit or multi-gigabit throughput, dual-strand fibre connectivity, or Power over Ethernet injection. Buyers needing managed switching features or SFP cage form factors should evaluate alternative hardware.

Single-strand 100Base-BX-U interface

The defining specification is the 100Base-BX-U single-fibre interface operating at 100 Mbps alongside a 10/100Base-TX copper port. This wavelength pairing determines compatibility with the matching BX-D device at the far end. Verify the existing link budget and fibre type before purchase.

How it compares

Measured against everything we stock in SFP & SFP+ Transceiver Modules, at today’s prices. Recalculated every night.

Price $338.99
Pricier than about 75% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand namePerle
Model nameS-100-S1ST20U
In the box
In the boxS-100-S1ST20U Transceiver/Media Converter
100-240v AC, Regulated DC Adapter

Questions about this item

Does the S-100-S1ST20U package include the power adapter or must I buy it separately?

The box contains the S-100-S1ST20U transceiver and a 100-240v AC regulated DC adapter, so no separate power supply is required.

The model supports both 10/100Base-TX and 100Base-BX-U; how do I decide which mode to use?

Use 10/100Base-TX for copper twisted-pair links up to 100 metres and 100Base-BX-U for single-fibre bi-directional links up to 20 kilometres.

What does the 20 in the model name mean for an actual installation?

It indicates a 20 kilometre reach on the 100Base-BX-U single-fibre interface.

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