SFPs / Transceivers
Lantronix TN-SFP-OC3Sx Series 100Base-FX/OC-3 Single-Mode SFPs
The TN-SFP-OC3Sx Series are MSA-compliant duplex SFP transceivers for 100Base-FX Fast Ethernet and OC-3 links over single-mode fiber, with LC connectors, digital diagnostics and reaches of 20, 30 or 80 km.
From $214.50
Overview
About the Lantronix TN-SFP-OC3Sx Series
These hot-pluggable SFP modules (also written TN SFP OC3S or OC3 SFP) carry 100 Mbps Fast Ethernet or OC-3 traffic over duplex single-mode fiber. Lantronix lists Fast Ethernet and OC-3 switches and routers, xDSL equipment and metro edge switching as the target applications, where a 100 Mbps port needs to reach a site tens of kilometers away rather than across a building.
All three models use LC connectors and support digital diagnostics (DMI), so a host that reads SFP diagnostics can report optical levels and module health. Two models run at 1310 nm: TN-SFP-OC3S reaches 20 km with a 17.0 dB link budget and TN-SFP-OC3S3 reaches 30 km with 20.0 dB. TN-SFP-OC3S8 moves to 1550 nm for 80 km with a 29.0 dB budget. Each module draws 0.66 W at 3.3 V and operates from -10 to 85 C.
The modules are hot-pluggable, comply with the SFP Multi-Source Agreement for use in MSA-standard SFP ports, and meet IEEE 802.3 plus IEC 60825 and FDA 21 CFR 1040.10 and 1040.11 laser safety requirements. Each measures 13 x 55 x 8 mm. UL listing applies to specific SKUs only, so confirm it per part number.
Key capabilities
- Three distance classes
- Choose 20 km or 30 km at 1310 nm, or 80 km at 1550 nm, to match the module's reach and link budget to the actual fiber span.
- Fast Ethernet and OC-3
- Each module supports 100Base-FX Ethernet and OC-3 SONET rates, so one part family covers both kinds of 100 Mbps-class optical ports.
- Digital diagnostics (DMI)
- DMI lets compatible hosts read optical and module diagnostics, which speeds troubleshooting of long single-mode spans.
- Extended temperature range
- Modules operate from -10 to 85 C, suiting equipment in closets, cabinets and remote sites with limited climate control.
- MSA-compliant hot-plug
- The modules follow the SFP Multi-Source Agreement footprint and can be inserted or removed with the host powered on.
How to choose the right TN-SFP-OC3Sx Series part number
Pick by distance and wavelength; all three are duplex single-mode LC modules with DMI. TN-SFP-OC3S runs at 1310 nm to 20 km with a 17.0 dB budget and is the model listed as UL Listed and TAA compliant. TN-SFP-OC3S3 also runs at 1310 nm but reaches 30 km with a 20.0 dB budget. TN-SFP-OC3S8 uses 1550 nm for 80 km with a 29.0 dB budget. Both ends of a link need matching wavelength modules, and the link loss must fall within the module's budget.
Configure & order
Find your TN-SFP-OC3Sx Series part number
Every orderable TN-SFP-OC3Sx 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-SFP-OC3S
$214.50
Ships on backorder
TN-SFP-OC3S3
$269.50
Ships on backorder
TN-SFP-OC3S8
$632.50
Ships on backorder
Where the TN-SFP-OC3Sx Series is used
- Long-reach Fast Ethernet uplinks between campus buildings
- OC-3 ports on switches and routers in metro networks
- Metro edge switching over single-mode fiber up to 80 km
- xDSL equipment uplinks to remote aggregation sites
TN-SFP-OC3Sx Series datasheets & documentation
TN-SFP-OC3Sx Series FAQ
What is the difference between TN-SFP-OC3S, OC3S3 and OC3S8?
All are 100Base-FX/OC-3 duplex single-mode LC SFPs with DMI. TN-SFP-OC3S reaches 20 km at 1310 nm (17.0 dB), TN-SFP-OC3S3 reaches 30 km at 1310 nm (20.0 dB) and TN-SFP-OC3S8 reaches 80 km at 1550 nm (29.0 dB).
Do TN-SFP-OC3Sx modules support OC-3 as well as Fast Ethernet?
Yes. Lantronix specifies these modules as 100Base-FX/OC-3 transceivers for Fast Ethernet and OC-3 switches and routers, xDSL applications and metro edge switching. All three models support the OC-3 rate as well as 100 Mbps Ethernet.
What is the operating temperature of the TN-SFP-OC3Sx Series?
The TN-SFP-OC3S, OC3S3 and OC3S8 operate from -10 C to 85 C. Each module draws 0.66 W from a 3.3 V supply and measures 13 x 55 x 8 mm in the standard SFP footprint.
Is the TN-SFP-OC3S TAA compliant?
The TN-SFP-OC3S is listed as TAA compliant and UL Listed. Lantronix notes that UL listing applies to specific SKUs only, so check the individual part number when a project requires TAA or UL documentation.
