25GBASE-ER SFP28 40km Optical Transceiver
25GBASE-ER SFP28 optical transceiver for up to 25.78Gbps over OS2 single-mode fiber to 40km, with a 1310nm DFB transmitter, APD receiver, duplex LC interface 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-ER SFP28 40km optical transceiver supports up to 25.78Gbps over OS2 single-mode fiber. It uses a 1310nm DFB transmitter and an APD receiver. 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 connections over OS2 single-mode fiber.
Reach Up to 40km
Verify route loss, connector and splice losses, and engineering margin before deployment.
Optical specifications
| Product Type | 25GBASE-ER SFP28 Optical Transceiver |
| Data Rate | Up to 25.78Gbps |
| Reach | 40km over single-mode fiber |
| Connector | Duplex LC |
| Wavelength | 1310nm nominal; transmitter range 1270-1330nm |
| Transmitter / Receiver | DFB / APD |
| TX Power | 0 to +6dBm |
| Receiver Sensitivity | -18dBm |
| Receiver Overload | -6dBm |
| Extinction Ratio / SMSR | 3.5dB minimum / 30dB minimum |
| Power | 3.3V; 3.135-3.465V; 450mA maximum |
| DDM / DOM | Supported |
| Temperature | 0 to +70 degrees C |
| Compliance | SFP MSA, SFF-8472 and RoHS |
Single-mode deployment
Use this module for long-reach campus, metro access and regional aggregation links that require 25G over duplex single-mode fiber. Check the end-to-end optical loss before installation; the maximum stated reach does not replace a link-budget review.
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
Use this published single-fiber alternative when the project must conserve fiber strands.
Compare with the 25G BiDi SFP28 40km optionFrequently Asked Questions
What fiber is required?
Use OS2 single-mode fiber with duplex LC connections.
Is the maximum reach 40km?
The specified reach is up to 40km. Actual deployment depends on route loss, connectors, splices and engineering margin.
Does this transceiver use one fiber or two?
It uses two fibers, one for transmit and one for receive.
What optical power levels should be checked?
The verified transmit power is 0 to +6dBm, receiver sensitivity is -18dBm and receiver overload is -6dBm.
Does it support DDM?
Yes. Digital diagnostic monitoring is supported for temperature, voltage, bias current, transmit power and receive power.
Is compatibility universal?
No. Coding, port mode, firmware and host requirements must be checked for the target device.
What can prevent link establishment?
Incorrect port mode or coding, reversed LC polarity, contaminated connectors, fiber faults, receiver overload or excessive route loss can prevent a stable link.
What temperature range is verified?
The verified commercial operating range is 0 to +70 degrees C.
Downloads
Request the 25GBASE-ER SFP28 40km datasheet
Confirm your 25G link
Share your device model, fiber route, link length and quantity for compatibility and optical review.
Request Compatibility Check
