1.25G SFP Transceiver Module 1310nm 10/20km Duplex LC DDM — Product view 1
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1.25G SFP Transceiver Module 1310nm 10/20km Duplex LC DDM — In a host switch 2
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1.25G SFP Transceiver Module 1310nm 10/20km Duplex LC DDM — Application view 3
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1.25G SFP Transceiver Module 1310nm 10/20km Duplex LC DDM — Application view 4
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1.25G SFP Transceiver Module 1310nm 10/20km Duplex LC DDM — Application view 5
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1.25G SFP Transceiver Module 1310nm 10/20km Duplex LC DDM — Application view 6
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Product images are illustrative renders for marketing reference; final delivered product is built to order per confirmed specifications.

1.25G SFP

1.25G SFP Transceiver Module 1310nm 10/20km Duplex LC DDM

1.25G SFP Transceiver Module 1310nm 10/20km Duplex LC DDM SMF for Switches

This 1.25G Gigabit SFP transceiver runs 1000BASE-LX over dual-fiber single-mode links at 1310nm, reaching 10–20km with a duplex LC interface and DDM monitoring. Built to the SFP MSA standard, it is a reliable choice for switch uplinks, FTTX access and IP networks.

  • 1.25Gb/s Gigabit rate for stable Ethernet optical links
  • 1310nm single-mode transmission, 10–20km reach
  • Duplex LC interface — standard dual-fiber connectivity
  • Real-time DDM monitoring of optical power, temperature and voltage
Data rate
1.25 Gb/s
Wavelength
1310 nm
Reach
10 – 20 km
Interface
Duplex LC
Fibre / media
Single-Mode Fiber (SMF)
Diagnostics
Yes
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  • Coded and confirmed for your host platform before production
  • Samples for evaluation in the intended port
  • Specification, test data and compliance paperwork with the order

Overview

What this module is for.

This 1.25G Gigabit SFP transceiver runs 1000BASE-LX over dual-fiber single-mode links at 1310nm, reaching 10–20km with a duplex LC interface and DDM monitoring. Built to the SFP MSA standard, it is a reliable choice for switch uplinks, FTTX access and IP networks.

Review the exact module, host platform and complete link requirement before ordering. Our inquiry keeps the configuration, host details and quantity together in one record.

Check the optical budget for your path

Key selling points

  • 1.25Gb/s Gigabit rate for stable Ethernet optical links
  • 1310nm single-mode transmission, 10–20km reach
  • Duplex LC interface — standard dual-fiber connectivity
  • Real-time DDM monitoring of optical power, temperature and voltage
  • MSA-compliant, hot-pluggable, 3.3V — plug-and-play with mainstream switches

Technical detail

Listed specifications.

Fields published for initial selection. The production datasheet, coding and marking are confirmed with the quotation.

1.25G SFP Transceiver Module 1310nm 10/20km Duplex LC DDM — listed specifications
ParameterListed value
TypeFiber Optic Transceiver (SFP)
Data Rate1.25 Gb/s
Wavelength1310 nm
Transmission Distance10 – 20 km
ConnectorDuplex LC
Fiber TypeSingle-Mode Fiber (SMF)
Supply Voltage3.3 V
DDM / DOMYes
Operating Temperature0 ~ 70°C
CertificationCE / RoHS / FCC

Technical drawings

Dimensions, structure and interfaces.

Supplier drawings for this product family. Click any drawing to enlarge it — the callouts are readable at full size.

Drawing 1 of 4 — click to enlarge
Drawing 2 of 4 — click to enlarge
Drawing 3 of 4 — click to enlarge
Drawing 4 of 4 — click to enlarge

Drawings are illustrative. Confirm mechanical dimensions and interface details against the production datasheet before design-in.

Build quality

Details that decide reliability.

Gold-plated edge connector for high conductivity and stable signaling

Precision duplex LC optical port for reliable long-term connection

Low power consumption with strong thermal stability

Fully MSA-compliant for broad switch compatibility

Where it is used

Typical applications.

  • FTTH / FTTB / FTTX access networks
  • Switch uplinks and IP network aggregation
  • Enterprise, campus and metro Ethernet
  • 10–20km point-to-point single-mode links

Application notes describe common deployments for this product type. Confirm the design of your own link with the responsible engineering team.

Application concepts
Network equipment in a data centre aisle

OEM / ODM

Customization options.

  • Commercial (0~70°C) and Industrial (-40~85°C) temperature grades
  • OEM/ODM coding for major switch platforms
  • Alternative reach and wavelength options
  • Neutral / custom export packaging

Availability, minimum quantity and lead time for customized configurations are confirmed in the quotation.

Discuss a custom configuration
Optical module coding and test

Ordering

What is confirmed, and what we need from you.

Listed ordering information

MOQ
1 piece
Single package size
25 × 20 × 10 cm; gross weight ~2.0 kg
Warranty
12 months
Lead time
samples in stock; bulk built to order

Include this in your inquiry

  • Product reference and required quantity
  • Host brand, model, port and software version
  • Fibre or cable type, connector and installed reach
  • Operating environment and temperature grade
  • Destination, sample needs and requested schedule

MOQ, lead time, warranty and applicable documents are confirmed in the quotation.

FAQ

Questions about this model.

What link distance is listed for the 1.25G SFP Transceiver Module 1310nm 10/20km Duplex LC DDM?

The listed reach is 10 – 20 km. Actual distance depends on the installed fibre loss, the number of connectors and splices and the receiver sensitivity at both ends, so confirm the optical budget for your own path before ordering. Our link budget calculator works through the arithmetic in a minute.

Which wavelength does this module use?

It is listed at 1310 nm. Both ends of a duplex link must use the same wavelength plan.

What connector and fibre does it need?

The listed interface is Duplex LC on Single-Mode Fiber (SMF). Check that your patch cords, panel adapters and polarity match before installation.

Does it support DDM / DOM diagnostics?

Listed as: Yes. Digital diagnostics report optical transmit power, receive power, bias current, supply voltage and module temperature through the host, which makes commissioning and fault isolation far faster than swapping parts.

Is an industrial temperature version available?

The listed operating temperature is 0 ~ 70°C. Commercial (0~70°C) and industrial (-40~85°C) grades can be quoted; state the installed environment in your inquiry so the right grade is offered.

Can it be coded for my switch?

Yes. Send the host manufacturer, the exact model and the software version with your inquiry. Coding is confirmed per platform before production — a connector that fits does not by itself prove the host will accept the module.

Can I evaluate a sample first?

Include the required quantity, host platform and destination in your inquiry. Sample availability, charges and lead time are confirmed in the quotation, and we recommend testing in the intended port before a bulk order.

More in the procurement FAQ.

Related

Other models in this family.

All 1.25G SFP

Next step

Confirm this configuration with us.

Send the host platform, the installed link and the quantity. We will confirm coding, reach and lead time in the quotation.

Request a quotation