Cisco SFP-10/25G-LR-I Compatible 25G SFP28 LR Transceiver Module
Built for hosts recognizing SFP-10/25G-LR-I, this HT-manufactured SFP28 module delivers 25G transmission at 1310nm. Its rated reach is 10km, with Duplex LC as the physical interface. The specifications and engineering guidance below support project teams keep OEM references, delivery records and port schedules aligned, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: SFP-10/25G-LR-IHT Part Number: SFP-25GMLR-31-I
Product Highlights
- Compatible alternative to Cisco SFP-10/25G-LR-I
- 25G connectivity at 25.78Gbps
- Optical wavelength: 1310nm
- Specified reach: 10km
- Duplex LC / SMF interface
- Operating temperature: -40 to 85°C(-40 to 185°F)
- Factory compatibility verification and optical performance testing before shipment
Specifications
| Cisco Compatible | SFP-10/25G-LR-I |
|---|---|
| Manufacturer | HT |
| HT Part Number | SFP-25GMLR-31-I |
| Form Factor | SFP28 |
| Max Data Rate | 25.78Gbps |
| Wavelength | 1310nm |
| Max Cable Distance | 10km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | DFB |
| Receiver Type | PIN |
| TX Power | -7~2.5dBm |
| Receiver Sensitivity | ＜-12dBm |
| Power Budget | 5dB |
| Receiver Overload | 2.5dBm |
| Power Consumption | ≤1.5W |
| Extinction Ratio | ＞3dB |
| Industrial Temperature Range | -40 to 85°C(-40 to 185°F) |
| Protocols | SFF-8472, SFF-8024, SFF-8431, SFF-8432, CEI-28G-VSR |
| Core Size | G.652 |
| Packaging Technology | BOX Packaging |
| DOM | Supported |
Project Documentation and Traceability
Large deployments are easier to audit when the order code, optical standard and endpoint record agree. Keep the OEM reference in the compatibility document and the HT part number on the packing list. Labels and carton groups can be arranged by rack or port plan so installers need not identify modules by appearance. For this model, the principal parameters are data rate 25.78Gbps, wavelength 1310nm, rated reach 10km.
Cisco Compatibility and Factory Testing
The module is checked for host recognition as SFP-10/25G-LR-I, link establishment and diagnostic reporting. Physical cage fit alone is not treated as evidence of compatibility. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Applications and Optical Link Design
Use this module for equipment interconnection over the specified single-mode fiber plant, including enterprise backbone, campus, metro or data-center interconnect links according to its rated distance. Confirm that both ends use the same optical standard and wavelength plan, and allow for connector, splice and patch-panel loss within the stated power budget.
The industrial temperature rating makes this version appropriate for controlled outdoor cabinets, transport nodes and other installations exposed to wider ambient temperature variation. Adequate airflow, protected cable routing and host-platform temperature limits still apply.
The single-mode link budget should include fiber attenuation, connectors, splices and panels over the intended 10km route. Keep the Duplex LC interface clean and match the remote optical standard. Consider receiver overload as well as insufficient power on short links.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -7~2.5dBm; receiver sensitivity is ＜-12dBm; the stated optical power budget is 5dB. Digital diagnostics make later maintenance easier when baseline values are captured at installation. Save the initial readings with the port and OEM reference, then investigate meaningful changes rather than reacting to a single transient value. Diagnostic support depends on the host as well as the module, so unavailable fields should be confirmed with the platform documentation. Diagnostic monitoring is listed as Supported. Before every insertion, keep dust caps in place until the patch lead is ready, avoid touching the optical end face and use an appropriate inspection and cleaning procedure. Do not look into an active optical interface.
Frequently Asked Questions
Is this an original Cisco transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies SFP-10/25G-LR-I, not an original Cisco-branded module.
Which fiber and connector are required?
Use Duplex LC with SMF. The specified maximum reach is 10km, subject to fiber quality and total link loss.
Can it be mixed with another wavelength or reach version?
Only when the two ends share the same optical standard, wavelength plan and supported data rate. Check the exact part numbers and link budget rather than relying only on the module form factor.
Ordering Information
Quote HT part number SFP-25GMLR-31-I together with OEM reference SFP-10/25G-LR-I and quantity. Add the host model and software release when pre-order verification is required. Neutral labels, customer packaging and project-specific compatibility review are available on request.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.
Quality Assurance and Packaging
Each SFP-10/25G-LR-I compatible module is inspected, powered up and functionally checked before protective packing. Dust caps and individual trays shield the interface during transport. Customer references, rack groups and project packing lists can be added for volume orders.
