SFPs / Transceivers
Lantronix TN-GLC-SX-MM Series 1000Base-SX Multimode SFP Transceivers
The TN-GLC-SX-MM Series are Cisco compatible 1000Base-SX Gigabit SFP transceivers for multimode fiber with LC connectors, offered in standard, DMI, 2 km extended-reach and hardened -40 °C to 85 °C versions.
From $29.41
Overview
About the Lantronix TN-GLC-SX-MM Series
The TN-GLC-SX-MM family (also searched as GLC-SX-MM compatible SFPs) is Lantronix's line of Cisco compatible Gigabit SFPs for multimode fiber. It covers short-reach Gigabit fiber links in enterprise and industrial networks, such as switch-to-switch and switch-to-server uplinks over existing multimode cabling, and adds variants for diagnostics, longer multimode runs and extreme temperatures so one family covers the whole site.
The standard modules run 1000Base-SX at 850 nm, reaching 220 m on 62.5/125 µm and 550 m on 50/125 µm fiber with an 8.5 dB link budget. The 2K versions transmit at 1310 nm over multimode to 2 km with a 10.0 dB budget, for campus runs beyond 850 nm reach. MMD and RGD versions add DMI diagnostics, and the RGD versions operate from -40 °C to 85 °C rather than 0 °C to 70 °C. All use a duplex LC connector, draw 0.66 W at 3.3 V and are listed as TAA compliant.
Key capabilities
- Cisco compatible SX optics
- Lantronix markets the series as Cisco compatible Gigabit SFP modules for 1000Base-SX links on standard multimode fiber.
- 2 km on multimode
- TN-GLC-SX-MM-2K versions use 1310 nm to reach 2 km over multimode fiber, well beyond the 550 m of 850 nm SX optics.
- Hardened RGD versions
- RGD modules operate from -40 °C to 85 °C and include DMI, for hardened switches in outdoor or industrial enclosures.
- Optional DMI diagnostics
- TN-GLC-SX-MMD and the RGD versions add digital diagnostics so the host switch can monitor optical power and module status.
- 20-pack option
- TN-GLC-SX-MM-PK packages 20 standard 850 nm modules in one part number, for larger switch deployments that need many identical multimode optics.
How to choose the right TN-GLC-SX-MM Series part number
Start with distance and temperature. For standard 850 nm links up to 550 m, choose TN-GLC-SX-MM (no DMI, UL Listed), TN-GLC-SX-MMD (adds DMI) or TN-GLC-SX-MM-PK (pack of 20). For hardened sites, TN-GLC-SX-MM-RGD is the 850 nm version with DMI rated -40 °C to 85 °C. For multimode runs up to 2 km, choose TN-GLC-SX-MM-2K (1310 nm) or TN-GLC-SX-MM-2K-RGD, which adds DMI and the extended temperature range. Both ends of a link need matching wavelengths.
Configure & order
Find your TN-GLC-SX-MM Series part number
Every orderable TN-GLC-SX-MM Series configuration, filtered by the specs that actually differ between them. Pick what you need on the left and the matching part numbers appear here.
TN-GLC-SX-MM
$29.41
30 in stock
TN-GLC-SX-MM-PK
$1,107.70
Ships on backorder
TN-GLC-SX-MMD
$31.37
Ships on backorder
TN-GLC-SX-MM-2K
$74.20
4 in stock
TN-GLC-SX-MM-RGD
$39.22
1 in stock
TN-GLC-SX-MM-2K-RGD
$84.80
Ships on backorder
Where the TN-GLC-SX-MM Series is used
- Gigabit switch uplinks over existing multimode cabling
- Campus multimode runs up to 2 km with 2K modules
- Hardened switch fiber ports in outdoor cabinets
- Bulk SFP rollouts across access-layer switches
TN-GLC-SX-MM Series datasheets & documentation
TN-GLC-SX-MM Series FAQ
Is TN-GLC-SX-MM compatible with Cisco GLC-SX-MM ports?
Lantronix markets the TN-GLC-SX-MM Series as Cisco compatible Gigabit SFP modules. They are 1000Base-SX multimode SFPs with LC connectors following IEEE 802.3, intended for Gigabit SFP ports in switches and routers.
How far does TN-GLC-SX-MM transmit on multimode fiber?
The 850 nm modules reach 220 m on 62.5/125 µm and 550 m on 50/125 µm multimode fiber with an 8.5 dB link budget. The TN-GLC-SX-MM-2K and 2K-RGD versions use 1310 nm to reach 2 km with a 10.0 dB budget.
What does the RGD suffix mean on TN-GLC-SX-MM modules?
RGD identifies the hardened versions, TN-GLC-SX-MM-RGD and TN-GLC-SX-MM-2K-RGD, which operate from -40 °C to 85 °C and include DMI. Standard versions operate from 0 °C to 70 °C.
Which TN-GLC-SX-MM modules include DMI diagnostics?
TN-GLC-SX-MMD, TN-GLC-SX-MM-RGD and TN-GLC-SX-MM-2K-RGD include DMI digital diagnostics. The base TN-GLC-SX-MM, its 20-pack and TN-GLC-SX-MM-2K do not list diagnostics, so choose a DMI version if your switch monitors optical levels.
Can a TN-GLC-SX-MM-2K link to a standard 850 nm SX module?
No. The 2K modules transmit at 1310 nm while standard SX modules use 850 nm, so a link needs the same type at both ends. Pair 2K with 2K (or 2K-RGD) modules for 2 km multimode runs.
