Specifications of LINK-PP 1.25G BiDi 1x9 Transceiver
The LINK-PP L9-SC55311G-20PPC is a high-performance 1.25Gbps 1x9 BiDi optical transceiver designed for robust data communication networks. Operating on a single 3.3V power supply, this commercial-grade module utilizes a 1550nm DFB transmitter and 1310nm PIN receiver to deliver stable 20km transmission over single-mode fiber via a Simplex SC interface.
LINK-PP Part Number
L9-SC55311G-20PPC
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
LVPECL
Signal Detect
LVPECL
Power Supply
3.3V
Operating Temperature Range
0 to +70℃
Key Features of LINK-PP L9-SC55311G-20PPC
This advanced 1x9 BiDi optical module features high-quality LVPECL differential input and output signals for superior integrity. The L9-SC55311G-20PPC integrates a precision 1550nm DFB laser diode and guarantees Class 1 laser safety, making it an ideal choice for Gigabit Ethernet and demanding industrial optical link applications.
Standard 1x9 Package for Reliable PCB Mounting
Engineered with an industry-standard 9-pin SIP footprint, the L9-SC55311G-20PPC ensures secure through-hole PCB mounting. This classic 1x9 package design provides excellent mechanical stability and dependable electrical connections for continuous, vibration-resistant telecommunication networking operations.
1.25G Single-Fiber Connectivity for Video Transmission System
Delivering a seamless 1.25Gbps data rate, this optical transceiver excels in digital video transmission systems. The single-fiber connectivity maximizes broadband efficiency, ensuring zero-latency, high-definition multimedia routing for broadcast networks and commercial security surveillance infrastructures.
WDM Technology: 1550nm-TX/1310nm-RX Bi-Directional Link
Utilizing advanced Wavelength Division Multiplexing, the L9-SC55311G-20PPC establishes a robust bi-directional link over one fiber. Transmitting at 1550nm and receiving at 1310nm effectively doubles network capacity, drastically reducing fiber cabling costs for telecom deployments.
Stable 20km Transmission for Medium-Reach Networks
Optimized for medium-reach optical networks, this 1.25G BiDi module maintains exceptional signal fidelity across 20km of 9/125μm single-mode fiber. The high-sensitivity PIN receiver and powerful DFB laser ensure a reliable optical link budget without degradation.
Simplex SC Interface with Low EMI Design
The module features a durable Simplex SC receptacle optical interface paired with a low EMI design. This sophisticated shielding architecture minimizes electromagnetic interference, ensuring the L9-SC55311G-20PPC delivers crystal-clear data transmission in high-density networking equipment.
LINK-PP L9-SC55311G-20PPC 1.25G 1x9 Certification
The LINK-PP L9-SC55311G-20PPC meets stringent international standards, holding CE, FCC, UKCA, UL, and REACH certifications to guarantee global compliance and maximum safety for telecommunication hardware integrations.
This module complies with MIL-STD-883E for superior ESD protection and CISPR22 Class B for EMI immunity, ensuring stable operation even in electrically noisy industrial networking environments.
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 and Gigabit Ethernet protocols, the L9-SC55311G-20PPC offers seamless interoperability and flawless PCB integration for legacy optical switches and media converters.
Rigorous Testing Ensures Reliable 1x9 Performance
To guarantee superior fiber optic connectivity, the L9-SC55311G-20PPC is subjected to an array of stringent laboratory evaluations prior to shipment.
Optical Spectrum Test
Validates the precise 1550nm central wavelength and verifies optimal DFB laser output power.
Eye Pattern Test
Ensures ITU-T G.957 compliance by evaluating signal integrity and LVPECL electrical characteristics.
Bit Error Rate Test
Confirms flawless 1.25Gbps data transmission over 20km with zero packet loss or jitter.
Temperature Test
Guarantees stable commercial performance across the standard 0°C to 70°C operating temperature range.
Product Shipping for LINK-PP L9-SC55311G-20PPC 1.25G 1x9
We ensure your L9-SC55311G-20PPC optical transceivers are meticulously packaged and swiftly dispatched to maintain component integrity during international shipping logistics.
Anti-Static Protective Packaging
Individually sealed in premium ESD-safe bags to prevent electrostatic discharge damage.
Shock-Resistant Transport Protection
Cushioned with custom foam trays to absorb vibration during transit handling.
Fast Order Processing and Dispatch
Streamlined warehouse operations guarantee rapid processing and immediate dispatch of inventory.
Global Logistics and International Delivery
Partnered with top-tier couriers for secure, trackable, and prompt global delivery.
To deploy the LINK-PP L9-SC55311G-20PPC, directly solder its standard 1x9 pins onto your networking equipment's PCB. Ensure proper 3.3V power and LVPECL data connections, then insert a single-mode fiber into the Simplex SC port to activate the 1.25Gbps link.
L9-SC55311G-20PPC 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-20PPC 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:
The L9-SC55311G-20PPC is rated for commercial indoor temperatures (0°C to +70°C). For harsh outdoor cabinets, we recommend our industrial wide-temperature version, model L9-SC55311G-20PPI5 (-40°C to +85°C). By
admin
A:
Yes, the L9-SC55311G-20PPC is fully compliant with the industry-standard 1x9 footprint MSA, IEEE 802.3z 1000BASE-BX specifications, RoHS 6, and FDA/IEC Class 1 eye-safety regulations. By
admin
A:
Yes, we provide competitive B2B volume pricing for orders of 50, 100, and 200+ units, along with dedicated lead-time scheduling and Net terms for qualified enterprise accounts. By
admin
A:
Since the L9-SC55311G-20PPC operates at Tx1550nm/Rx1310nm over simplex SC single-mode fiber, you must pair it with a complementary Tx1310nm/Rx1550nm 1.25G 1x9 BiDi SC transceiver (such as LINK-PP L9-SC31551G-20PPC) for full bi-directional 20km transmission. By
admin
A:
Please use a standard 9/125um OS2 single-mode simplex SC/UPC fiber patch cord; avoid multimode cables or APC-angled connectors to prevent high insertion loss. By
admin
Please write comments with more than three
character.
497757
579545
C***n
Netherlands
Verified
Purchase
5 .0
2026-09-30
We benchmarked this 1x9 BiDi module against the original branded one on a 1.25Gbps link. Identical throughput, slightly better receive sensitivity, and it ran 0 to 70°C in our IDF cabinet without a hiccup
Please write comments with more than three
character.
497757
579549
B***e
Philippines
Verified
Purchase
5 .0
2026-08-26
Deployed these on a 20km single-mode span between two industrial parks. Tx1550nm/Rx1310nm matched the opposite unit, measured -4.2dBm on our power meter, no flapping in three months
Germany · English · EUR
