Specifications of LINK-PP 1.25G BiDi 1x9 Transceiver
The LINK-PP L9-SC55311G-20PPI5 is a high-performance 1.25G BiDi 1x9 transceiver designed for robust optical communication. It features a reliable 5V power supply, PECL differential logic interfaces, and industrial-grade temperature tolerance from -40°C to +85°C. This optical module utilizes an advanced DFB laser diode and PIN receiver to ensure exceptional signal integrity.
LINK-PP Part Number
L9-SC55311G-20PPI5
Vendor Name
LINK-PP
Form Factor
1x9
Max Data Rate
1.25Gbps
Wavelength
1550nm-TX/1310nm-RX
Max Cable Distance
20km
Fiber Interface
Simplex SC
Fiber Type
SMF
Transmitter Type
DFB
Receiver Type
PIN
Differential Input/ Output
PECL
Signal Detect
PECL
Power Supply
5V
Operating Temperature Range
-40 to +85℃
Key Features of LINK-PP L9-SC55311G-20PPI5
This industrial 1x9 optical module delivers outstanding networking capabilities by combining a 1550nm DFB transmitter with a 1310nm PIN receiver. The LINK-PP L9-SC55311G-20PPI5 complies with ITU-T G.957 standards, offering unparalleled durability, class 1 laser safety, and flawless integration into diverse digital transmission systems.
Standard 1x9 Package for Reliable PCB Mounting
Engineered with an industry-standard 1x9 pin through-hole footprint, this transceiver ensures secure and straightforward PCB mounting. The robust through-hole design of the L9-SC55311G-20PPI5 guarantees stable electrical connectivity, making it ideal for continuous operation in demanding industrial network equipment.
1.25G Single-Fiber Connectivity for Industrial Gigabit Network
Operating seamlessly at 1.25Gbps, this module provides high-speed Gigabit Ethernet and Fiber Channel solutions. By maximizing bandwidth over single-fiber links, the L9-SC55311G-20PPI5 supports critical data flow in harsh industrial environments while minimizing overall optical fiber deployment costs.
WDM Technology: 1550nm-TX/1310nm-RX Bi-Directional Link
Utilizing advanced Wavelength Division Multiplexing, the L9-SC55311G-20PPI5 transmits at 1550nm and receives at 1310nm simultaneously. This WDM bi-directional technology efficiently halves your cabling requirements, optimizing fiber optic infrastructure for high-capacity digital video and networking systems.
Stable 20km Transmission for Medium-Reach Networks
Designed for medium-reach optical networks, this 1.25G BiDi module achieves a reliable transmission distance of up to 20km over 9/125μm single-mode fiber. The L9-SC55311G-20PPI5 guarantees low attenuation and high signal fidelity across extended campus or municipal networks.
Simplex SC Interface with Low EMI Design
Featuring a durable Simplex SC receptacle optical interface, the L9-SC55311G-20PPI5 ensures precise optical alignment. Furthermore, its specialized housing design significantly reduces electromagnetic interference, maintaining compliant EMI levels to protect sensitive adjacent networking components from signal disruption.
The LINK-PP L9-SC55311G-20PPI5 proudly holds multiple international regulatory approvals. These comprehensive certifications reflect our commitment to delivering safe, standard-compliant, and high-performance optical communication solutions globally.
Every single L9-SC55311G-20PPI5 undergoes a rigorous quality assurance protocol. Our factory executes comprehensive optical and electrical evaluations to guarantee defect-free manufacturing and absolute reliability in real-world deployments.
This 1x9 transceiver is fully certified with CE, FCC, UKCA, UL, and REACH standards. It also meets stringent IEC61000-4-2 ESD and CISPR22 Class B EMI regulatory compliance requirements.
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
Certified to comply with the ITU-T G.957 protocol, the L9-SC55311G-20PPI5 ensures interoperability across network switches. Its standardized 1x9 footprint guarantees perfectly seamless and certified printed circuit board integration.
Rigorous Testing Ensures Reliable 1x9 Performance
Advanced laboratory testing validates the superior durability and stability of the L9-SC55311G-20PPI5, ensuring it handles critical industrial networking demands without any failure.
Optical Spectrum Test
We meticulously measure the 1550nm wavelength stability to prevent signal drift during operation.
Eye Pattern Test
Sustained 1.25Gbps traffic analysis confirms zero packet loss and a flawless communication experience.
Bit Error Rate Test
Measures transmission accuracy to detect and prevent data errors.
Temperature Test
Confirms continuous L9-SC55311G-20PPI5 functionality within extreme -40°C to +85°C industrial operating environments.
Product Shipping for LINK-PP L9-SC55311G-20PPI5 1.25G 1x9
We provide secure, professional packaging and rapid dispatch services for the L9-SC55311G-20PPI5 to ensure your critical network infrastructure components arrive safely and promptly.
Anti-Static Protective Packaging
Each transceiver is securely sealed in an ESD-safe protective shielding bag.
Integrating the L9-SC55311G-20PPI5 into your system is straightforward. Simply solder the 9-pin through-hole configuration onto your networking board, supply a stable 5V power source, and connect your Simplex SC fiber patch cord to establish a robust optical link.
L9-SC55311G-20PPI5 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-SC55311G-20PPI5 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:
You should pair the L9-SC55311G-20PPI5 (Tx1550nm/Rx1310nm) with the LINK-PP L9-SC31551G-20PPI5 (Tx1310nm/Rx1550nm) so both ends transmit and receive on matching wavelengths over a single SMF strand. By
admin
A:
It complies with the 1x9 MSA footprint, IEEE 802.3z Gigabit Ethernet, RoHS, CE, FCC, and IEC/FDA Class 1 laser eye-safety standards for harsh industrial deployments. By
admin
A:
Yes, every industrial batch undergoes -40°C to +85°C thermal chamber aging, and we include full QC test reports along with tiered B2B project discounts for 150+ units. By
admin
A:
Yes, using standard OS2 9/125um single-mode fiber with simplex SC/UPC connectors easily supports the full 20km reach within the module's optical link budget. By
admin
A:
The 'I5' suffix in L9-SC55311G-20PPI5 indicates an industrial (-40°C to +85°C) module specifically engineered for a single +5V power supply. If your board uses +3.3V, please select the L9-SC55311G-20PPI variant. By
admin
Please write comments with more than three
character.
497758
579559
L***o
United States
Verified
Purchase
5 .0
2026-09-03
We put this industrial 1x9 BiDi in twelve unheated roadside enclosures across a 20km single-mode ring. Ambient hit -38°C in February and +52°C inside the box in July, and not one link flapped
Please write comments with more than three
character.
497758
579564
D***d
Argentina
Verified
Purchase
5 .0
2026-09-02
Qualified this -40 to +85°C module against our old stock on a 1.25Gbps traffic generator. Bit error rate stayed below 1E-12 across the temperature sweep, and the 5V rail tolerated our noisy DC supply
Australia · English · AUD
