Specifications of LINK-PP 1.25G BiDi 1x9 Transceiver
The LINK-PP L9-SC31551G-20PPI is an industrial-grade 1.25G BiDi 1x9 transceiver designed for robust optical communication. It features a 3.3V power supply, LVPECL differential data logic, and operates reliably in extreme temperatures from -40°C to +85°C. Utilizing high-performance FP lasers and PIN detectors, it guarantees stable 20km signal transmission over single-mode fiber infrastructure.
LINK-PP Part Number
L9-SC31551G-20PPI
Vendor Name
LINK-PP
Form Factor
1x9
Max Data Rate
1.25Gbps
Wavelength
1310nm-TX/1550nm-RX
Max Cable Distance
20km
Fiber Interface
Simplex SC
Fiber Type
SMF
Transmitter Type
FP
Receiver Type
PIN
Differential Input/ Output
(LV)PECL
Signal Detect
(LV)PECL
Power Supply
3.3V
Operating Temperature Range
-40 to +85℃
Key Features of LINK-PP L9-SC31551G-20PPI
This high-quality LINK-PP L9-SC31551G-20PPI optical module delivers exceptional gigabit performance tailored for harsh industrial environments. It perfectly integrates advanced WDM fiber technology, reliable signaling, and compact through-hole housing. These distinct features ensure optimal network stability and maximum throughput for your fiber optic links.
Standard 1x9 Package for Reliable PCB Mounting
Engineered with a traditional 1x9 SIP form factor, this transceiver guarantees secure through-hole PCB mounting. The robust nine-pin configuration delivers superior mechanical stability and dependable electrical connections, perfectly preventing signal loss during strong industrial vibrations.
1.25G Single-Fiber Connectivity for Industrial Ethernet Systems
Delivering a reliable 1.25Gbps data rate, this optical module is exceptionally optimized for Gigabit Ethernet and Fiber Channel applications. The high-speed connectivity ensures seamless data exchange, making it an excellent choice for demanding industrial network systems.
WDM Technology: 1310nm-TX/1550nm-RX Bi-Directional Link
Utilizing advanced Wavelength Division Multiplexing, the L9-SC31551G-20PPI maximizes fiber capacity. It transmits data using a 1310nm FP laser diode while simultaneously receiving at 1550nm via a highly sensitive PIN detector, requiring only one single-mode fiber strand.
Stable 20km Transmission for Medium-Reach Networks
Designed for extended network coverage, this industrial 1.25G transceiver flawlessly pushes optical signals up to twenty kilometers. The powerful launch optical power combined with deep receiver sensitivity ensures consistent, long-distance communication across your enterprise infrastructure.
Simplex SC Interface with Low EMI Design
Featuring a user-friendly Simplex SC optical receptacle, this transceiver promotes quick, secure fiber connections. Its intelligent low EMI design minimizes electromagnetic interference, fully ensuring clean signal integrity and compliant operation within densely populated network hardware chassis.
LINK-PP L9-SC31551G-20PPI 1.25G 1x9 Certification
The LINK-PP L9-SC31551G-20PPI optical transceiver meets stringent international safety and performance standards. Comprehensive industry certifications guarantee its outstanding reliability, making it perfect for global telecommunications deployment.
Every single transceiver undergoes an intensive quality assurance protocol during manufacturing. This rigorous factory testing ensures uncompromising durability, verifying that components survive severe operational stress without failure.
This certified optical module strictly adheres to CE, FCC, UKCA, UL, and REACH regulations. It features robust IEC61000-4-2 ESD protection and conforms to CISPR22 Class B standards.
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.
Certified for Seamless PCB Integration & Protocol Compatibility
Fully compliant with ITU-T G.957 industry standards, this dependable transceiver ensures perfect protocol interoperability. The standardized design guarantees seamless integration into your existing printed circuit board environments.
Rigorous Testing Ensures Reliable 1x9 Performance
Comprehensive laboratory evaluations guarantee that the LINK-PP 1x9 transceiver delivers pristine signal quality and exceptional mechanical endurance under highly demanding industrial networking conditions.
Optical Spectrum Test
Verifies precise 1310nm transmitter wavelengths and strict output spectrum widths for optimal optical fidelity.
Eye Pattern Test
Ensures perfect signal clarity by evaluating the transmitter output against standard ITU-T G.957 parameters.
Bit Error Rate Test
Confirms virtually flawless gigabit data transmission over twenty kilometers of standard single-mode optical fiber.
Temperature Test
Validates consistent module performance across extreme industrial operating environments ranging from -40°C to +85°C.
Product Shipping for LINK-PP L9-SC31551G-20PPI 1.25G 1x9
We guarantee secure worldwide delivery for your optical modules. Our professional logistics team utilizes premium packaging materials to ensure products arrive completely undamaged everywhere.
Anti-Static Protective Packaging
Every module uses premium anti-static bags to prevent harmful electrical discharge damage.
Shock-Resistant Transport Protection
We implement robust cushioning trays to completely absorb intense physical transport shocks.
Fast Order Processing and Dispatch
Our efficient warehouse team quickly processes inventory to ensure rapid shipment dispatch.
Global Logistics and International Delivery
We partner with trusted couriers to provide swift, reliable international shipping solutions.
Installing this optical module is straightforward. Simply align the nine standard pins with your PCB holes, solder them securely, and plug your Simplex SC fiber cable directly into the receptacle to establish an instant industrial network connection.
L9-SC31551G-20PPI 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 L9-SC31551G-20PPI 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, every L9-SC31551G-20PPI unit is factory-tested across the full -40°C to +85°C industrial temperature range to guarantee stable 1.25Gbps Gigabit transmission in extreme outdoor enclosures. By
admin
A:
If your switch PHY expects LVPECL SD, connect Pin 4 directly with a standard pulldown resistor. If your MCU expects 3.3V CMOS/TTL, we can also supply the 'PTI' variant (TTL Signal Detect) upon request. By
admin
A:
Yes, every module carries a unique serial number and we include a complete factory optical test report (Tx power, Rx sensitivity, extinction ratio, and wavelength) with every B2B shipment. By
admin
A:
All three are 1.25G BiDi (Tx1310nm/Rx1550nm) 20km Simplex SC 1x9 modules. The 20PPC is 3.3V Commercial (0°C to +70°C), the 20PPI is 3.3V Industrial (-40°C to +85°C), and the 20PPI5 is 5V Industrial (-40°C to +85°C). By
admin
A:
Yes. Because the 1x9 optical transceiver is a transparent Layer-1 physical layer device operating at 1.25Gbps, it passes standard Ethernet frames, VLAN tags, and jumbo frames of any size without restriction. By
admin
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Tunisia
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5 .0
2026-09-25
Deployed across thirty remote wind turbine substations connected via single-strand OS2 fiber. Pairing L9-SC31551G-20PPI with 1550nm-TX headend transceivers gave us 5dB optical margin over 17km and zero packet loss.
Germany · English · EUR
