25GBASE-LR SFP28 20km Optical Transceiver
25GBASE-LR SFP28 optical transceiver for up to 25.78Gbps over OS2 single-mode fiber to 20km, with a 1310nm interface, duplex LC and DDM / DOM support.
Specifications
- Warranty
- 3-Years
- Customization
- Free OEM labeling
- Delivery Time
- 48 hours dispatch
Confirm the link conditions first.
The Axonode 25GBASE-LR SFP28 20km transceiver supports up to 25.78Gbps over OS2 single-mode fiber. Confirm the duplex LC route, host port mode, compatibility coding and total optical loss before deployment.
25G SFP28 Port
Confirm that the host device supports a 25G SFP28 port and the required compatibility coding.
Duplex LC / OS2
Use duplex LC over single-mode fiber.
Reach Up to 20km
Verify route loss, connector and splice losses, and engineering margin before deployment.
Optical specifications
| Product Type | 25GBASE-LR SFP28 Optical Transceiver |
| Axonode Part Number | A-25G-SFP28-20KM |
| Data Rate | Up to 25.78Gbps |
| Reach | 20km over single-mode fiber |
| Connector | Duplex LC |
| Wavelength | 1310nm; 1270-1350nm |
| Transmitter / Receiver | DFB / PIN |
| TX Power | -7 to +2dBm |
| Receiver Sensitivity | -13.3dBm |
| Receiver Overload | +2dBm |
| Extinction Ratio / SMSR | 3.5dB minimum / 30dB minimum |
| Power | 3.3V; 3.135-3.465V; 400mA maximum |
| DDM / DOM | Supported |
| Temperature | 0 to +70 degrees C |
| Compliance | SFP+ MSA, SFF-8472 and RoHS |
Single-mode deployment
Use this module for campus backbone, metro access and access-to-aggregation links that require 25G over duplex single-mode fiber.
Compatibility prepared for your network
Confirm the exact device, port mode, software or firmware, coding profile and DDM requirements. SFP28 form factor alone does not guarantee host acceptance.
Testing and compliance
Testing can include wavelength, optical power, DDM readings, host recognition and link establishment according to product and project requirements.
Related product option
Review the published single-fiber alternative when fiber availability is limited.
Compare with the 25G BiDi SFP28 20km optionFrequently Asked Questions
What fiber is required?
Use OS2 single-mode fiber with duplex LC connections.
Is the maximum reach 20km?
The rated reach is up to 20km, subject to the actual route loss, connectors, splices and engineering margin.
Does it use one fiber or two?
It uses two fibers, one for transmit and one for receive.
Does it support DDM?
Yes. Digital diagnostic monitoring is supported.
What should be checked before ordering?
Confirm the host model, 25G port mode, coding, fiber type, connector and link loss.
Is compatibility universal?
No. Coding and host requirements must be checked for the target device and software version.
What can prevent link establishment?
Incorrect port mode, coding, LC polarity, dirty connectors, fiber faults or excessive loss can prevent a link.
What temperature range is verified?
The verified commercial operating range is 0 to +70 degrees C.
Downloads
Request the 25G LR 20km datasheet
Confirm your 25G link
Share your device model, fiber route, link length and quantity for compatibility and optical review.
Request Compatibility Check
