10/100BASE-T SFPNVIDIA/Mellanox SFP-10GLR-31-I Compatible 10G SFP+ LR Transceiver Module
This NVIDIA/Mellanox SFP-10GLR-31-I compatible transceiver provides 10G connectivity in a hot-swappable SFP+ package. Its optical design operates at the listed wavelength plan for up to the stated reach, using LC duplex. Complete parameters and related OEM references help high-density deployments balance optical performance, port access and thermal planning.
OEM Part Number: SFP-10GLR-31-IHT Part Number: SFP-10GLR-31
Product Highlights
- Compatible alternative to NVIDIA/Mellanox SFP-10GLR-31-I
- 10G connectivity at 10.3125Gbps
- LC duplex / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: -40 to 85°C (-40 to 185°F)
- Factory compatibility verification and optical performance testing before shipment
Specifications
| HT Part Number | SFP-10GLR-31 |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP+ |
| Max. Data Rate | 10.3125Gbps |
| Connector | LC duplex |
| Cable Type | SMF |
| Transmitter Type | DFB |
| Receiver Type | PIN |
| TX Power | -8.2~0.5dBm |
| Cable Distance | 10km |
| Power Budget | 6.2dB |
| Receiver Sensitivity | -14.4dBm |
| Max. Power Consumption | ≤1W |
| Receiver Overload | 0.5dBm |
| DDM/DOM | Supported |
| Operating Temperature | -40 to 85°C (-40 to 185°F) |
| Core Size | 9/125µm |
| Modulation | NRZ |
| Protocols | IEEE 802.3ae, SFF-8431, SFF-8472, SFP+ MSA, SFF-8432, CPRI, eCPRI |
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.
Before commissioning, measure the complete single-mode channel against the stated budget for the rated distance. Inspect every LC duplex connection and record diagnostic power where supported. Both ends must agree on rate, wavelength and optical standard.
Quality Assurance and Packaging
Quality control covers the optical or electrical interface, host identification and operating link. The verified unit is then individually protected and cartoned. Customer references, rack groups and project packing lists can be added for volume orders.
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. A sound acceptance record includes link state, diagnostic temperature, supply voltage and transmit or receive levels where the host exposes them. Compare the readings with the stated ranges rather than treating any received light as proof of adequate margin. Persistent alarms or borderline values should trigger an end-face and complete-channel inspection. 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.
High-Density Port and Thermal Planning
In a densely populated chassis, connector access and airflow form part of the optical-link design. Confirm that neighboring modules and patch leads leave room for latch operation, and include listed power consumption in the host thermal budget. Assess port density together with fiber management. For this model, the principal parameters are data rate 10.3125Gbps.
Ordering Information
Quote HT part number SFP-10GLR-31 together with OEM reference SFP-10GLR-31-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.
NVIDIA/Mellanox Compatibility and Factory Testing
The module is checked for host recognition as SFP-10GLR-31-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.
Frequently Asked Questions
Is this an original NVIDIA/Mellanox transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies SFP-10GLR-31-I, not an original NVIDIA/Mellanox-branded module.
Which fiber and connector are required?
Use LC duplex with SMF. The specified maximum reach is the distance stated in the specifications, 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.
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.
