H3C SFP-GE-LX-SM1310-20 Compatible 1G SFP Transceiver Module

H3C SFP-GE-LX-SM1310-20 Compatible 1G SFP Transceiver Module

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 data-center designers evaluate optical reach, rack integration and host compatibility together, while keeping HT manufacture separate from the OEM cross-reference.

OEM Part Number: SFP-GE-LX-SM1310-20HT Part Number: SFP1G-ELX-31

Product Highlights

  • Compatible alternative to H3C SFP-GE-LX-SM1310-20
  • 1G connectivity at 1.25Gbps
  • Optical wavelength: 1310nm
  • Specified reach: 20km
  • Duplex LC/UPC / SMF interface
  • Digital diagnostic monitoring: Supported
  • Operating temperature: 0 to 70°C (32 to 158°F)

Specifications

H3C CompatibleSFP-GE-LX-SM1310-20
ManufacturerHT
HT Part NumberSFP1G-ELX-31
Form FactorSFP
Max. Data Rate1.25Gbps
Wavelength1310nm
Max. Cable Distance20km
ConnectorDuplex LC/UPC
MediaSMF
Transmitter TypeFP 1310nm
Receiver TypePIN
TX Power-9.5~-3dBm
Minimum Receiver Power< -23dBm
Power Budget13.5dB
Receiver Overload-3dBm
Power Consumption≤1W
Extinction Ratio>9dB
DDM/DOMSupported
Commercial Temperature Range0 to 70°C (32 to 158°F)
ProtocolsSFF-8472 MSA Compliant, IEEE 802.3ah-2004, IEEE 802.3z

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 1G interface configuration must match the remote equipment; sharing a SFP housing alone does not make two transceiver types interoperable.

Before commissioning, measure the complete single-mode channel against the stated budget for 20km. Inspect every Duplex LC/UPC connection and record diagnostic power where supported. Both ends must agree on rate, wavelength and optical standard.

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.

Optical Acceptance, Diagnostics and Handling

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.

Data-Center Optical Design and Airflow

Select the module by optical standard, reach and rack layout. Check the complete fiber channel, including panels and connectors, and keep dense bundles from blocking front-panel airflow. Account for listed power consumption and preserve enough space to remove a module without disturbing adjacent links. For this model, the principal parameters are data rate 1.25Gbps, wavelength 1310nm, rated reach 20km.

Ordering Information

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.

H3C Compatibility and Factory Testing

The module is checked for host recognition as SFP-GE-LX-SM1310-20, 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 H3C transceiver?

No. It is an HT-manufactured compatible alternative for equipment that specifies SFP-GE-LX-SM1310-20, not an original H3C-branded module.

Which fiber and connector are required?

Use Duplex LC/UPC with SMF. The specified maximum reach is 20km, 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.


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