The Dell SFP1G-SX-31 Compatible LINK-PP SFP module provides stable, low-loss optical transmission with data rates of 1.25Gbps over multi-mode fiber (MMF) at distances of up to 2 km and an operating wavelength of 1310 nm. It is designed for reliable short-to-medium distance networking with consistent signal integrity.
Dell Part Number
SFP1G-SX-31
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1310nm
Max Cable Distance
2km
Connector
Duplex LC
Media
MMF
Transmitter Type
FP
Receiver Type
PIN
TX Power
-12 to -3dBm
RX Power
-23 to -1dBm
Receiver Sensitivity
<-23dBm
Receiver Overload
-1dBm
Operating Temperature Range
0 to 70°C
Protocols
SFF-8472、MSA、IEEE 802.3
Key Features of Dell SFP1G-SX-31 Compatible LINK-PP 1G SFP
The Dell SFP1G-SX-31 Compatible LINK-PP SFP transceiver supports a transmission speed of 1.25 Gbps and maintains steady signal quality over two kilometers when using multi-mode fiber. It features a standard LC duplex interface for quick and easy installation, as well as built-in digital optical monitoring (DOM) for real-time diagnostics. Reliable performance, easier maintenance, and smooth integration with current network infrastructures are all guaranteed by these features.
The Dell SFP1G-SX-31 Compatible LINK-PP optical module consists of a FP laser transmitter and a PIN photodiode receiver. This combination allows for precise optical signal control, high transmission accuracy, and strong thermal stability under varying operating conditions.
SFP1G-SX-31: Reliable 1.25 Gbps Connectivity
The Dell SFP1G-SX-31 Compatible LINK-PP 1G SFP module delivers reliable 1.25Gbps connectivity for Gigabit Ethernet and fiber channel applications. It ensures stable links for enterprise networks, campus backbones, and access-layer deployments.
SFP1G-SX-31 Module with 1310nm Wavelength
This Dell SFP1G-SX-31 Compatible LINK-PP module's 1310 nm wavelength offers better attenuation resistance than shorter wavelengths, resulting in stable signal transmission and lower loss over longer multi-mode fiber (MMF) distances.
SFP1G-SX-31 Module Supporting 2km Transmission
The Dell SFP1G-SX-31 Compatible LINK-PP SFP module enables secure data transmission up to 2 kilometers over multi-mode fiber. It is best suited for inter-building connections, enterprise campus networks, and distribution layer links.
SFP1G-SX-31 Module with Duplex LC Interface
The dual LC interface offers a compact and efficient connection by separating transmit and receive channels for easier cable management. It provides quick installation, precise alignment, and wide compatibility with standard SFP ports on switches, routers, and media converters.
SFP1G-SX-31 Module with DOM for Real-Time Monitoring
Critical parameters like temperature, voltage, and optical power are accessible in real time thanks to the integrated DOM function. This enables enhanced network dependability, quicker troubleshooting, and proactive monitoring.
Quality you can trust, LINK-PP modules are produced under ISO 9001 systems and certified by CE, RoHS, and FCC to deliver globally compliant, worry-free performance.
Every module is meticulously verified through multiple quality tests to maintain wavelength precision, low error rates, and outstanding long-term stability.
SFP1G-SX-31 Quality Certifications
Recognized worldwide with ISO 9001, CE, RoHS, and FCC certifications, LINK-PP guarantees quality you can trust in every deployment.
This product is in conformity with ISO9001. This system is valid to a company engaging in development, production and supply service of fiber optical products. Please contact us to learn more.
ISO/IEC 27001 is an international standard for managing and processing information security. This standard is jointly developed by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It sets out requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS). Ensuring the confidentiality, integrity, and availability of organizational information assets, obtaining an ISO 27001 certificate means that the enterprise has passed the audit conducted by a certification body, proving that its information security management system has met the requirements of the international standard. Please contact us to learn more.
This product is in conformity with ISO14001.It is intended for use by an organization seeking to manage its environmental responsibilities in a systematic manner that contributes to the environmental pillar of sustainability. Please contact us to learn more.
ISO 45001 is a global standard that sets out the requirements for an occupational health and safety management system (OH&SMS).
REACH is a European Union regulation concerning the Registration, Evaluation, Authorization and Restriction of Chemicals. It came into force on 1st June 2007 and replaced a number of European Directives and Regulations with a single system. The regulation aims to protect human health and environmental safety, maintain and improve the competitiveness of the EU chemical industry, and develop innovative capabilities for non-toxic and harmless compounds to prevent market fragmentation, increase the transparency of the use of chemicals, promote non-animal experiments, and pursue sustainable social development.Please contact us to learn more.
This product meets the applicable requirements of Directive (EU) 2015/863 of RoHS. It restricts the use of 10 hazardous materials in the manufacture of various types of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates. Please contact us to learn more.
This product fully accords with the FCC, which aims to manage the radio wave and magnetic fields more reasonably. Please contact us to learn more.
CB is an international system operated by IECEE. This product is based on IEC standards for testing the safety performance of electrical products. Please contact us to learn more.
This product fully accords with UKCA (UK Conformity Assessed) certificate, which signifies that it meets all relevant quality standards as well as health and safety requirements. Please contact us to learn more.
UL certification is a non-mandatory certification in the United States,mainly testing and certification of product safety performance.Its ultimate purpose is to obtain products with a fairly safe level for the market,and to contribute to ensuring human health and property safety.Please contact us to learn more.
SFP1G-SX-31 Certified for Reliable Host-Device Compatibility
Field-proven for full compatibility with LINK-PP equipment, ensuring effortless system integration.
Rigorous Testing Ensures Reliable SFP Performance
Exhaustive reliability trials confirm superior consistency and durability. Explore more at the LINK-PP Test Support Center.
Optical Spectrum Test
Analyzes spectral performance to avoid interference in dense optical environments.
Eye Pattern Test
Observes waveform patterns to confirm clear data representation.
Bit Error Rate Test
Assesses communication stability through precise error detection.
Temperature Test
Validates performance across a wide temperature range for reliable use in varied environments.
Product Shipping for Dell SFP1G-SX-31 Compatible LINK-PP 1G SFP
LINK-PP modules are prepared for immediate deployment and shipped through a logistics network designed for protection, speed, and consistency.
Anti-Static Protective Packaging
Components are kept fully protected throughout delivery by electrostatic protection.
Shock-Resistant Transport Protection
Secure cushioning minimizes the effects of rough handling.
Fast Order Processing and Dispatch
Efficient order management ensures fast and reliable fulfillment.
Global Logistics and International Delivery
Global distribution channels support efficient worldwide shipping.
The Dell SFP1G-SX-31 Compatible LINK-PP 1G SFP transceiver is ideal for enterprise networks, campus connectivity, fiber-to-the-building (FTTB) applications, and switch-to-switch links. It ensures stable optical connections with low signal degradation.
SFP1G-SX-31 Technical Support
LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.
Pre-Sales Technical Consultation
Professional technical guidance to help customers select the most suitable SFP1G-SX-31 modules based on network architecture and application requirements.
Compatibility Verification Support
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Deployment & Installation Assistance
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Long-Term Technical Assurance
Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.
A:
Yes, the LS-MM311G-02C fully complies with SFF-8472 and MSA standards. As long as your host switch or router supports standard SFF-8472 DOM/DDM telemetry via CLI or SNMP, you will be able to read real-time parameters such as RX/TX optical power, temperature, supply voltage, and laser bias current. By
admin on
2026-03-03
A:
Yes, the LS-MM311G-02C is fully hot-pluggable as per MSA specifications. You can insert or remove the SFP module from powered-on switch ports without rebooting the hardware or affecting the operation of adjacent ports. By
admin on
2026-02-12
A:
No, both ends of the optical link must operate on the exact same wavelength and optical specifications. The LS-MM311G-02C uses a 1310nm FP transmitter, so the transceiver on the far end must also be a 1310nm multimode SFP module to establish a valid optical connection. By
admin on
2025-04-19
A:
No optical attenuator is required for short test runs or short patch cables. The receiver overload threshold for this module is -1dBm, while the maximum transmitter power is -3dBm. Because the max TX power (-3dBm) is lower than the receiver overload limit (-1dBm), you can safely connect short patch leads without saturating or damaging the PIN receiver. By
admin on
2025-03-15
A:
The rated 2km distance is typically achieved on optimized multimode fiber (such as OM3/OM4) using 1310nm window transmission. On legacy OM1 or OM2 fiber, modal bandwidth limits may slightly reduce the maximum effective distance. However, because 1310nm suffers significantly lower chromatic dispersion on MMF than 850nm, it will still achieve substantially longer distances than standard 850nm 550m SFPs. By
admin on
2025-03-12
Outstanding price-to-performance ratio for 1G SFP 1310nm 2km DOM transceivers. We verified the SFF-8472 digital diagnostics via CLI, reading exact TX/RX power levels and operating temperatures. Flawless interoperability across multi-vendor hardware. No packet drops or thermal throttling issues during heavy backup cycles across our inter-building links.
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493575
455422
B***h
Turkey
Verified
Purchase
5 .0
2026-04-09
Bought 10 units of LS-MM311G-02C for an inter-building link across campus. 1310nm over OM3 multimode fiber gave us a clean link instantly. DDM stats are spot on.
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493575
455414
J***l
Turkey
Verified
Purchase
5 .0
2026-03-01
Deployed these in our outdoor enclosure network node. Standard 0 to 70℃ operating temp holds up fine in ventilated cabinets. DDM monitoring works great. ;)
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493575
455416
N***n
Belarus
Verified
Purchase
5 .0
2026-02-08
We replaced legacy short-reach optics with these LINK-PP LS-MM311G-02C modules for our 1.8km OM4 fiber backhaul. The 1310nm FP transmitter and PIN receiver deliver pristine signal margins with -15dBm RX level. Seamless compatibility across our mixed Arista and Juniper switch stack. SFF-8472 DDM telemetry integration works flawlessly with our SNMP monitoring tool.
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493575
455419
J***t
Belarus
Verified
Purchase
4 .0
2026-01-25
The LS-MM311G-02C transceiver modules perform exceptionally well with strong 1310nm signal over 1.5km MMF. However, the outer cardboard box arrived slightly squashed by the courier. Luckily, the anti-static packaging kept the duplex LC optics completely safe. Plugged into our Cisco switch and linked up instantly. Solid product, just needs sturdier shipping boxes.
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493575
455413
J***l
Nepal
Verified
Purchase
5 .0
2024-12-13
Installed 16 of these 1.25Gbps 1310nm 2km SFP modules in our aggregation switches for base station backhaul testing. The FP/PIN optical budget handles long multimode runs without optical attenuators. Full compliance with IEEE 802.3 standards ensured plug-and-play setup. Temperature stability in our server room (25°C) has been rock solid.
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493575
455409
E***g
Republic of Korea
Verified
Purchase
5 .0
2024-09-16
Needed a reliable 1.25Gbps SFP for our legacy FP/PIN 1310nm fiber run. Inserted into Cisco and MikroTik switches, recognized immediately without vendor lock issues. :)
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493575
455415
K***o
Germany
Verified
Purchase
5 .0
2024-08-02
I have received the order, and your shipping time is out of expected. And the 10/25/40G Transceiver Modules are functioning just as expected. we have always been satisfied with our equipment from you.
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493575
455401
B***g
France
Verified
Purchase
5 .0
2024-07-06
I am totally amazed by the so competitive price for the Transceiver Module. I bought 4pcs for test in advance, which work well on my switches. The price is much cheaper than original. What's more, the quality is pretty well, which has life warranty for it. Great product.
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493575
455407
C***n
Austria
Verified
Purchase
5 .0
2024-06-12
Tested these in a dual-homed switch topology linking storage servers to top-of-rack switches over duplex LC MMF. Line rates hit full 1.25Gbps throughput with negligible latency. DDM monitoring allows precise optical budget auditing. They run cool within the 0 to 70°C thermal envelope. Exceptional build quality and performance for bulk deployment.
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493575
455399
L***n
France
Verified
Purchase
5 .0
2023-05-17
I finally decide to give LINK-PP Ethernet port a try, since they are not as expensive as an original module. The result makes me very satisfied. They work well with very low insertion loss on our equipment, and the connection is also very firm.
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