2.5G BiDi SFP-2.5G-BX120 Single-Fiber 1490/1550nm 120km — Product view 1
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2.5G BiDi SFP-2.5G-BX120 Single-Fiber 1490/1550nm 120km — In a host switch 2
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2.5G BiDi SFP-2.5G-BX120 Single-Fiber 1490/1550nm 120km — Application view 3
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2.5G BiDi SFP-2.5G-BX120 Single-Fiber 1490/1550nm 120km — Application view 4
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2.5G BiDi SFP-2.5G-BX120 Single-Fiber 1490/1550nm 120km — Application view 5
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2.5G BiDi SFP-2.5G-BX120 Single-Fiber 1490/1550nm 120km — 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.

2.5G SFP

2.5G BiDi SFP-2.5G-BX120 Single-Fiber 1490/1550nm 120km

2.5G BiDi SFP-2.5G-BX120 | Single-Fiber 1490/1550nm 120km Simplex LC Transceiver with DDM

The SFP-2.5G-BX120 is a 2.5 Gigabit bidirectional (BiDi) SFP optical transceiver that carries transmit and receive over a single strand of single-mode fiber. Using 1490 nm / 1550 nm wavelength-division wavelengths and a simplex LC interface, it delivers long-haul reach up to 120 km — ideal for metro, access, and FTTx networks where fiber is scarce.

  • Long-haul single-fiber transmission up to 120 km
  • BiDi single-strand operation halves fiber usage (1490/1550 nm)
  • Simplex LC connector on single-mode fiber (SMF)
  • Digital Diagnostic Monitoring (DDM / DDMI) for real-time status
Data rate
2.5 Gbps
Wavelength
1490 nm / 1550 nm
Reach
120 km
Interface
Simplex LC
Fibre / media
Single-Mode (SMF)
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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.

The SFP-2.5G-BX120 is a 2.5 Gigabit bidirectional (BiDi) SFP optical transceiver that carries transmit and receive over a single strand of single-mode fiber. Using 1490 nm / 1550 nm wavelength-division wavelengths and a simplex LC interface, it delivers long-haul reach up to 120 km — ideal for metro, access, and FTTx networks where fiber is scarce. It includes full digital diagnostic monitoring (DDM), runs on 3.3 V, and is fully hot-pluggable, CE / FCC / RoHS certified.

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

  • Long-haul single-fiber transmission up to 120 km
  • BiDi single-strand operation halves fiber usage (1490/1550 nm)
  • Simplex LC connector on single-mode fiber (SMF)
  • Digital Diagnostic Monitoring (DDM / DDMI) for real-time status
  • 3.3 V supply, standard SFP form factor, hot-pluggable
  • CE / FCC / RoHS certified; OEM and custom label supported

Technical detail

Listed specifications.

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

2.5G BiDi SFP-2.5G-BX120 Single-Fiber 1490/1550nm 120km — listed specifications
ParameterListed value
Model NumberSFP-2.5G-BX120
Data Rate2.5 Gbps
Transmission ModeBiDi, Single Fiber
Wavelength1490 nm / 1550 nm
Transmission Distance120 km
Connector TypeSimplex LC
Fiber TypeSingle-Mode (SMF)
Digital DiagnosticsDDM / DDMI supported
Supply Voltage3.3 V
Operating Temperature0 ~ 70 °C
Form FactorSFP, Hot-Pluggable
ApplicationFTTx, Switches, IP Network
CertificationCE, FCC, RoHS
Warranty12 Months

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.

Single-fiber BiDi design reduces fiber infrastructure cost

Long-reach 120 km performance for metro and access links

Real-time DDM monitoring of temperature, voltage, bias, and optical power

Hot-swappable, rugged metal housing for durability and EMI protection

Where it is used

Typical applications.

  • Long-haul FTTx access and metro links
  • Carrier and ISP single-fiber deployments
  • Enterprise campus long-distance uplinks
  • IP network backbone extension

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.

  • OEM and custom label / coding supported
  • Paired BiDi wavelength sets (1490/1550 and 1550/1490) supplied to match
  • Compatible coding for major switch brands on request

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

Model
SFP-2.5G-BX120 (specify wavelength pairing)
Packaging
single item, 25 x 20 x 10 cm, 2.0 kg gross weight
Note
MOQ, lead time, and custom coding available on request

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 2.5G BiDi SFP-2.5G-BX120 Single-Fiber 1490/1550nm 120km?

The listed reach is 120 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 1490 nm / 1550 nm. Single-fibre BiDi modules must be ordered as matched A/B pairs so the transmit wavelength at one end matches the receive wavelength at the other. Ordering two of the same end will not link.

What connector and fibre does it need?

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

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 2.5G 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