Generic SFP-25GLRS-31 Compatible 25G SFP28 LR-S Transceiver Module
Built for hosts recognizing SFP-25GLRS-31, this HT-manufactured SFP28 module delivers 25G transmission at 1310nm. Its rated reach is 300m, with Duplex LC as the physical interface. The specifications and engineering guidance below support field technicians install, maintain and identify the exact compatible module, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: SFP-25GLRS-31HT Part Number: SFP-25GLRS-31
Product Highlights
- Compatible alternative to Generic SFP-25GLRS-31
- 25G connectivity at 25.78125Gb/s
- Optical wavelength: 1310nm
- Specified reach: 300m
- Duplex LC / SMF interface
- Operating temperature: 0 to 70°C (32 to 158°F)
- Factory compatibility verification and optical performance testing before shipment
Specifications
| HT Part Number | SFP-25GLRS-31 |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP28 |
| Max Data Rate | 25.78125Gb/s |
| Wavelength | 1310nm |
| Max Cable Distance | 300m |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | DFB |
| Receiver Type | PIN |
| TX Power | -5~2dBm |
| Receiver Sensitivity | <-8.5dBm |
| Power Budget | 3.5W |
| Modulation | NRZ |
| Power Consumption | 1W |
| Extinction Ratio | 3W |
| CDR | Supported |
| FEC Function | Supported |
| Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | SFF-8472, SFF-8024, SFF-8431, SFF-8432, IEEE 802.3 by, IEEE 802.3cc |
| DOM | Supported |
| Application | 25G Ethernet/ Data Center |
Field Installation and Maintenance
Inspect the connector and patch lead before installation, then support the fiber without pulling on the module housing. Release the latch properly during maintenance and keep dust protection on unused interfaces. If a module is removed for later use, retain its part-number label and record its original port. For this model, the principal parameters are data rate 25.78125Gb/s, wavelength 1310nm, rated reach 300m.
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.
Before deployment, check the host port type, supported data rate and firmware requirements. The 25G interface configuration must match the remote equipment; sharing a SFP28 housing alone does not make two transceiver types interoperable.
The single-mode link budget should include fiber attenuation, connectors, splices and panels over the intended 300m 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 -5~2dBm; receiver sensitivity is <-8.5dBm; the stated optical power budget is 3.5W. During commissioning, record the host diagnostic readings after the link has stabilized and compare them with those limits. DOM values are useful operational indicators, but they do not replace calibrated optical measurements when a link is marginal. Investigate unexpected loss through connector inspection, cleaning and a channel measurement before replacing the module. 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.
Quality Assurance and Packaging
Before packing, the module receives interface inspection, identification and link checks. Protective packaging avoids pressure on the connector and latch. Customer references, rack groups and project packing lists can be added for volume orders.
Generic Compatibility and Factory Testing
Compatibility testing for SFP-25GLRS-31 combines identification with a live link and available transmit, receive and alarm information. Connector condition is inspected separately. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Frequently Asked Questions
Is this an original equipment manufacturer transceiver?
No. It is an HT-manufactured compatible transceiver supplied under our own manufacturer identity, not an original equipment manufacturer module.
Which fiber and connector are required?
Use Duplex LC with SMF. The specified maximum reach is 300m, 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
When ordering, specify SFP-25GLRS-31, SFP-25GLRS-31, quantity and intended host platform. Project labels can repeat these details for receiving and asset records. 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.
