SFP1G-SX-31Arista Networks SFP1G-SX-31 Compatible 1G SFP Transceiver Module
The SFP1G-SX-31 compatible module serves equipment requiring a 1G SFP interface with 1310nm optics and a 2km rating. Connection is through Duplex LC. Product data, application guidance and factory verification are presented together to support structured fiber installations preserve a documented and serviceable optical channel.
OEM Part Number: SFP1G-SX-31HT Part Number: SFP1G-SX-31
Product Highlights
- Compatible alternative to Arista Networks SFP1G-SX-31
- 1G connectivity at 1.25Gbps
- Optical wavelength: 1310nm
- Specified reach: 2km
- Duplex LC / SMF/MMF interface
- Operating temperature: 0 to 70°C (32 to 158°F)
- Factory compatibility verification and optical performance testing before shipment
Specifications
| HT Part Number | SFP1G-SX-31 |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP |
| Max. Data Rate | 1.25Gbps |
| Connector | Duplex LC |
| Max. Cable Distance | 2km |
| Media | SMF/MMF |
| Wavelength | 1310nm |
| Modulation | NRZ |
| Power Consumption | < 1W |
| Transmitter Type | FP |
| Receiver Type | PIN-TIA |
| TX Power | -9~-3dBm |
| Receiver Sensitivity | < -21dBm |
| BER | 1E-12 |
| DOM Support | Yes |
| Protocols | SFF-8472, MSA, IEEE 802.3 |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| MTTF | 80,226 Hours[Condition |
| 30°C Reference Operating Condition, Based on Accelerated Life Testing] | Warranty |
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.
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.
For this multimode module, confirm fiber grade, modal bandwidth and total loss before commissioning. The 2km figure applies only under suitable cabling conditions. Inspect every Duplex LC mating point and match the remote optical standard.
Arista Networks Compatibility and Factory Testing
Factory verification starts with the expected SFP1G-SX-31 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.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -9~-3dBm; receiver sensitivity is < -21dBm. 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. 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.
Structured Fiber Pathways and Serviceability
Treat the transceiver as part of the complete channel. Follow the intended patch-panel route, maintain bend control and leave service access around the port. Confirm connector polish and fiber type at every mated pair; a documented service allowance is preferable to excess slack concealed inside a rack. For this model, the principal parameters are data rate 1.25Gbps, wavelength 1310nm, rated reach 2km.
Ordering Information
When ordering, specify SFP1G-SX-31, SFP1G-SX-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.
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.
Frequently Asked Questions
Is this an original Arista Networks transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies SFP1G-SX-31, not an original Arista Networks-branded module.
Which fiber and connector are required?
Use Duplex LC with SMF/MMF. The specified maximum reach is 2km, 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.
