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These three models (SFP 1GSXLC, SFP 1GSXLC T and SFP 1GLSXLC T)are the most classic naming conventions for gigabit ethernet transceivers by industrial communication giant Moxa. Due to the wide application of Moxa’s industrial switches in harsh outdoor environments such as rail transit, electricity, and wind power, this specific model often appears on weak current construction orders and procurement lists in China.
As we know that, there are three temperature ranges available:
- Commercial: -5 ° C to+70 ° C;
- Extended: -20 ° C to+80 ° C (extended temperature);
- Industrial: -40 ° C to+85 ° C (wide temperature).
The core difference between them is that “1GSXLC” is a standard gigabit multimode optical transceiver, while the latter two models with “T” are industrial wide temperature multimode optical transceivers.
The common parts of the three models are explained as follows:
- SFP-1G: Gigabit (1.25Gbps) SFP package series.
- SX: 1000BASE-SX international standard, also known as 850nm short-range multimode.
- LC: Duplex LC
| Moxa model | Fiber type | Wavelength | Interface | Max. distance | Temperature |
| sfp 1gsxlc | MMF | 850nm | Duplex LC | 550m | 0℃-70℃ |
| sfp 1gsxlc t | MMF | 850nm | Duplex LC | 550m | -40℃ ~ 85℃ |
| sfp 1glsxlc t | MMF | 1310nm | Duplex LC | 2km | -40℃ ~ 85℃ |
The following is a deep analysis and technical breakdown of these three models in practical engineering scenarios:
SFP 1GSLLC optical transceiver
SFP-1GSXLC is the most standardized engineering abbreviation of gigabit standard short distance multimode optical transceiver, which can operate within a temperature range of 0-70 ℃. When describing it, there is often no need to make any notes, as it defaults to a commercial grade module or is identified by the suffix “- C”
- Medium: Multimode fiber (MMF)
- Interface: Duplex LC
- Wavleng: 850nm
- Distance: Transmit up to 550 m over OM3/OM4 fiber
✅Yingda compatible model: SFP-1.25G-SX
SFP 1GSXLC T optical transceiver
This is the MOXA industrial wide temperature version SFP 1GSXLC optical transceiver. The suffix T for certain industries, such as power or industrial automation, represents Industrial Temperature ( -40℃ to 85℃). It is essentially the same as the product above, except that it can work in harsh outdoor environments (usually written as SFP-1G-SX-I or SFP-1G-SX-WT). The commonly used temperature range is 0 ℃ -70 ℃, and some may add a “- C” at the end of the model to indicate it.
- Medium: Multimode fiber (MMF)
- Wavelength: 850nm
- Interface: Duplex LC
- Distance: Transmit up to 550 m over OM3/OM4 fiber
- – T: Represents Wide Temperature (industrial-temp).
✅Yingda compatible model: SFP-1.25G-SX-T
SFP 1GLSXLC T optical transceiver
This is a model specifically customized long-distance multimode optical transceiver in the official Moxa catalog, which can achieve 2km transmission on multimode fibers using single-mode 1310nm lasers.
- LSX: stands for Long distance SX (Long distance multimode)
- Interface: Duplex LC
- Wavelength: 1310nm
- Distance: Transmit up to 1-2km over OM3/OM4 fiber
- – T: also represents an industrial wide temperature range of -40℃ to 85℃
✅Yingda compatible model：SFP-1.25G-LSX-T
Comparison between Standard Version and Wide Temperature Version
Moxa’s series strictly distinguishes between the standard version and the industrial wide temperature version, details as follows:
- Standard version (SFP-1GSXLC): Operating temperature range from 0 ° C to 70 ° C, suitable for indoor computer rooms.
- Industrial grade wide temperature version (SFP-1GSXLC-T): The working temperature can reach up to -40 ° C~85 ° C. Its internal electronic components, laser chips, and shell heat dissipation materials have undergone rigorous cold and heat resistance improvements, ensuring stable and uninterrupted operation even in outdoor blind boxes without air conditioning in the north or outdoor equipment boxes in the hot south.
How to choose?
If you are reviewing a procurement contract, weak current construction order, or preparing to place an order, please refer to the following comparison table:
- Confirm device brand: Although this module is named according to Moxa’s standard, there are many third-party manufacturers on the market, such as Yingda. Our company can provide a 100% compatible Moxa alternative solution. If you use it on a Moxa switch, please let us know “compatible with Moxa” when purchasing.
- “Downgrading” use is strictly prohibited: If the drawing or list clearly requires a – T suffix, ordinary commercial grade modules with a temperature range of 0~70 ° C must not be used as a substitute. Otherwise, in winter or summer, the equipment is very prone to crashing or optical path loss due to excessive temperature.
