
Built for hosts recognizing SFP-GE-LX-SM1310-20, this HT-manufactured SFP module delivers 1G transmission at 1310nm. Its rated reach is 20km, with Duplex LC/UPC as the physical interface. The specifications and engineering guidance below support network teams verify host acceptance as well as physical interface fit, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: SFP-GE-LX-SM1310-20HT Part Number: SFP1G-ELX-31
| H3C Compatible | SFP-GE-LX-SM1310-20 |
|---|---|
| Manufacturer | HT |
| HT Part Number | SFP1G-ELX-31 |
| Form Factor | SFP |
| Max. Data Rate | 1.25Gbps |
| Wavelength | 1310nm |
| Max. Cable Distance | 20km |
| Connector | Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | FP 1310nm |
| Receiver Type | PIN |
| TX Power | -9.5~-3dBm |
| Minimum Receiver Power | < -23dBm |
| Power Budget | 13.5dB |
| Receiver Overload | -3dBm |
| Power Consumption | ≤1W |
| Extinction Ratio | >9dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | SFF-8472 MSA Compliant, IEEE 802.3ah-2004, IEEE 802.3z |
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 1G interface configuration must match the remote equipment; sharing a SFP 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 20km route. Keep the Duplex LC/UPC interface clean and match the remote optical standard. Consider receiver overload as well as insufficient power on short links.
Factory verification starts with the expected SFP-GE-LX-SM1310-20 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.
For this model, the specified transmit-power range is -9.5~-3dBm; the stated optical power budget is 13.5dB. 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.
Check three layers before deployment: host acceptance of the module identity, port support for the stated rate, and a matching optical standard at the remote interface. For breakout operation, confirm lane configuration too. Similar-looking cages can behave differently across speeds and firmware settings. For this model, the principal parameters are data rate 1.25Gbps, wavelength 1310nm, rated reach 20km.
When ordering, specify SFP-GE-LX-SM1310-20, SFP1G-ELX-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.
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.
Each SFP-GE-LX-SM1310-20 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.
No. It is an HT-manufactured compatible alternative for equipment that specifies SFP-GE-LX-SM1310-20, not an original H3C-branded module.
Use Duplex LC/UPC with SMF. The specified maximum reach is 20km, subject to fiber quality and total link loss.
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.