Cisco SFP-10G-LRM-I Compatible 10G SFP+ LRM Transceiver Module
Built for hosts recognizing SFP-10G-LRM-I, this HT-manufactured SFP+ module delivers 10G transmission at 1310nm. Its rated reach is 220m on OM3 / 1.4km on SMF, 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-10G-LRM-IHT Part Number: SFP-10GLRM-31-I
Product Highlights
- Compatible alternative to Cisco SFP-10G-LRM-I
- 10G connectivity at 10.3125Gbps
- Optical wavelength: 1310nm
- Specified reach: 220m on OM3 / 1.4km on SMF
- Duplex LC / MMF/SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: -40 to 85°C (-40 to 185°F)
Specifications
| Cisco Compatible | SFP-10G-LRM-I |
|---|---|
| Manufacturer | HT |
| HT Part Number | SFP-10GLRM-31-I |
| Form Factor | SFP+ |
| Max. Data Rate | 10.3125Gbps |
| Wavelength | 1310nm |
| Max. Transmission Distance | 220m@OM3/1.4km@SMF |
| Connector | Duplex LC |
| Media | MMF/SMF |
| Transmitter Type | FP 1310nm |
| Receiver Type | PIN |
| TX Power | -8.2~0.5dBm |
| Receiver Sensitivity | <-14.4dBm |
| Power Budget | 6.2dB |
| Receiver Overload | 0.5dBm |
| Max. Power Consumption | ≤1W |
| Extinction Ratio | >3.5dB |
| DDM/DOM | Supported |
| Operating Temperature | -40 to 85°C (-40 to 185°F) |
| Core Size | 50/125µm@OM3 MMF, 9/125μm@SMF |
| Modulation | NRZ |
| Protocols | IEEE 802.3ae, SFF-8472, SFF-8431, SFF-8432, SFP+ MSA Compliant, CPRI, eCPRI |
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 10.3125Gbps, wavelength 1310nm, rated reach 220m on OM3 / 1.4km on SMF.
Cisco Compatibility and Factory Testing
Factory verification starts with the expected SFP-10G-LRM-I identity and finishes with an operating host link. EEPROM data, diagnostic visibility and the stated optical parameters are assessed together. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Applications and Optical Link Design
Typical deployments include switch-to-switch, switch-to-server and aggregation links inside a data hall or between adjacent equipment rooms. The Duplex LC interface connects to the specified multimode cabling, and the stated reach depends on fiber grade and link loss. Keep this interface on the matching multimode optical standard rather than connecting it directly to a single-mode wavelength or reach variant.
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 multimode channel should use the fiber grade associated with the stated 220m on OM3 / 1.4km on SMF reach. Keep the Duplex LC end faces clean and avoid tight bends. Different multimode standards are not interchangeable merely because they share a connector.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -8.2~0.5dBm; receiver sensitivity is <-14.4dBm; the stated optical power budget is 6.2dB. 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-10G-LRM-I, not an original Cisco-branded module.
Which fiber and connector are required?
Use Duplex LC with MMF/SMF. The specified maximum reach is 220m on OM3 / 1.4km on SMF, 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
Use SFP-10G-LRM-I as the compatibility cross-reference and SFP-10GLRM-31-I as the HT ordering identity. Keep other reaches or wavelength directions on separate order lines. 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
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.
