SFPs / Transceivers
Lantronix TN-SFP-OC3M and TN-SFP-GE-100FX 100Base-FX/OC-3 SFP Modules
The TN-SFP-OC3M and TN-SFP-GE-100FX are MSA-compliant 1310 nm multimode SFP modules with LC connectors and digital diagnostics: one for 100Base-FX and OC-3 ports, the other for running 100Base-FX from a Gigabit SGMII SFP slot.
From $159.50
Overview
About the Lantronix TN-SFP-OC3M & TN-SFP-GE-100FX
These two SFPs solve different 100 Mbps fiber problems with the same optics. Both are hot-pluggable, MSA-compliant modules running 1310 nm over multimode fiber on duplex LC connectors to 2 km, with DMI digital diagnostics. The difference is the host port they are designed for. Lantronix lists applications in Fast Ethernet and OC-3 switches and routers, xDSL equipment and metro edge switching.
The TN-SFP-OC3M supports both 100Base-FX and OC-3 framing, with an 11.0 dB link budget, and is UL Listed, so it suits SONET OC-3 interfaces as well as Fast Ethernet SFP ports. The TN-SFP-GE-100FX (also searched as TN-SFP-GE100FX) is built for a different case: when plugged into a Gigabit SFP slot that supports SGMII, it provides a 100Base-FX interface, letting a Gigabit switch connect to existing 100 Mbps fiber equipment. Its link budget is 10.0 dB.
Both modules draw 0.66 W from a 3.3 V supply, measure 13 x 55 x 8 mm, operate from 0°C to 70°C and meet IEC-60825 and CFR 1040.10/1040.11 laser safety requirements. Because the optics are 1310 nm multimode, the far end of the link must also use 1310 nm multimode optics, such as another TN-SFP-OC3M or a 100Base-FX device.
Key capabilities
- 100FX from Gigabit slots
- TN-SFP-GE-100FX gives a Gigabit SGMII SFP slot a 100Base-FX fiber interface to reach legacy Fast Ethernet devices.
- OC-3 framing support
- TN-SFP-OC3M handles OC-3 framing as well as 100Base-FX, for SONET OC-3 and Fast Ethernet ports on switches and routers.
- Digital diagnostics
- Both modules include DMI, so the host can read optical and operating values for monitoring and troubleshooting.
- 1310 nm multimode, 2 km
- Both run 1310 nm on duplex LC multimode fiber to 2 km, with 11.0 dB or 10.0 dB link budgets.
How to choose the right TN-SFP-OC3M & TN-SFP-GE-100FX part number
Pick by the host port. Use TN-SFP-OC3M in a Fast Ethernet or OC-3 SFP port; it supports OC-3 framing, has an 11.0 dB budget and is UL Listed. Use TN-SFP-GE-100FX in a Gigabit SFP slot that supports SGMII when the far end is a 100Base-FX device; it presents a 100Base-FX interface with a 10.0 dB budget. Both are 1310 nm multimode LC to 2 km with DMI and 0°C to 70°C operation.
Configure & order
Find your TN-SFP-OC3M & TN-SFP-GE-100FX part number
Every orderable TN-SFP-OC3M & TN-SFP-GE-100FX 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-SFP-OC3M
$159.50
Ships on backorder
TN-SFP-GE-100FX
$170.50
Ships on backorder
Where the TN-SFP-OC3M & TN-SFP-GE-100FX is used
- Connecting Gigabit switches to legacy 100Base-FX equipment
- OC-3 SONET interfaces on routers and access gear
- Fast Ethernet fiber ports in metro edge switching
- xDSL equipment with 100 Mbps fiber uplinks
TN-SFP-OC3M & TN-SFP-GE-100FX datasheets & documentation
TN-SFP-OC3M & TN-SFP-GE-100FX FAQ
What is the difference between TN-SFP-OC3M and TN-SFP-GE-100FX?
Both are 1310 nm multimode LC SFPs to 2 km with DMI. The TN-SFP-OC3M supports 100Base-FX and OC-3 framing for Fast Ethernet or OC-3 ports and is UL Listed. The TN-SFP-GE-100FX provides 100Base-FX when plugged into a Gigabit SGMII SFP slot.
Can I use a 100Base-FX SFP in a Gigabit SFP port?
With the right module. The TN-SFP-GE-100FX is made for this case: plugged into a Gigabit SFP slot that supports SGMII, it provides a 100Base-FX interface, so the switch can link to 100 Mbps fiber devices up to 2 km away.
Do these SFP modules support DMI?
Yes. Both the TN-SFP-OC3M and TN-SFP-GE-100FX include digital diagnostic monitoring (DMI), so compatible host switches and routers can read the module's optical and operating values for troubleshooting.
What is the operating temperature of the TN-SFP-OC3M?
0°C to 70°C. Lantronix's specifications also list a -40°C to 85°C rating for a TN-SFP-OC3MT variant, which is not one of the two part numbers on this page.
