The LINK-PP LQ-LW100L-ER4C is a high-performance 100G QSFP28 optical transceiver designed for 100GBASE-ER4 Lite and OTU4 applications. Featuring an EML transmitter, APD receiver, LAN-WDM multiplexing, and duplex LC connector, it delivers up to 111.81 Gbps aggregate bandwidth over single-mode fiber (SMF) up to 40km with FEC, operating under 3.3V commercial temperature conditions.
LINK-PP Part Number
LQ-LW100L-ER4C
Vendor Name
LINK-PP
Form Factor
QSFP28
Max Data Rate
111.81Gbps
Wavelength
1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm
Max Cable Distance
40km
Connector
Duplex LC
Media
SMF
Transmitter Type
EML
Receiver Type
APD
DDM/DOM
Supported
Operating Temperature Range
0°C to +70°C
Modulation (Electrical)
4x 25G-NRZ
Modulation (Optical)
4x 25G-NRZ
Protocols
QSFP28 MSA, SFF-8636, IEEE 802.3bm, CAUI-4
Warranty
5 Years
Key Features of LINK-PP LQ-LW100L-ER4C 100G QSFP28
The LINK-PP LQ-LW100L-ER4C 100G QSFP28 module features integrated 4-channel LAN-WDM TOSA and ROSA optics, hot-pluggable QSFP28 form factor, low power consumption under 5W, digital diagnostic monitoring (DDM), and compliance with IEEE 802.3bm CAUI-4 and ITU-T G.959.1 standards for robust long-reach network performance.
LINK-PP LQ-LW100L-ER4C 100G QSFP28 Optical Module
Engineered for high-density networking, the LINK-PP LQ-LW100L-ER4C QSFP28 optical module converts four 25.78Gbps electrical channels into four multiplexed optical signals, providing seamless 100G Ethernet connectivity with outstanding power efficiency and signal integrity.
LQ-LW100L-ER4C: 100G Connectivity for Wide Area Networks
The LQ-LW100L-ER4C delivers dependable 100G connectivity across metropolitan area networks, long-haul telecom links, and data center interconnects (DCI), ensuring low-latency data aggregation and high-throughput transmission over extended wide-area network infrastructures.
LQ-LW100L-ER4C Module with LAN-WDM Technology for Fiber Efficiency
Utilizing advanced LAN-WDM technology, the LQ-LW100L-ER4C optical module multiplexes four distinct wavelengths into a single-mode fiber pair, maximizing existing dark fiber capacity and significantly lowering carrier infrastructure deployment and operational costs.
LQ-LW100L-ER4C Module with 1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm Wavelength
Operating precisely on four LAN-WDM central wavelengths—1295.56nm, 1300.05nm, 1304.58nm, and 1309.14nm—the LQ-LW100L-ER4C guarantees near-zero chromatic dispersion and superior side-mode suppression ratio (SMSR > 30dB) over long single-mode fiber spans.
Equipped with high-gain APD receivers and EML lasers, the LQ-LW100L-ER4C module supports up to 40km reach over single-mode fiber with host FEC (30km without FEC), offering superior link budget for long-distance 100G links.
LQ-LW100L-ER4C Module with Duplex LC Interface
Featuring an industry-standard duplex LC optical interface, the LQ-LW100L-ER4C module ensures effortless, secure fiber patching with existing single-mode patch cords, delivering low insertion loss and high optical return loss for enterprise networks.
LQ-LW100L-ER4C Module with DOM for Real-Time Monitoring
The LQ-LW100L-ER4C integrates digital optical monitoring (DOM) via a 2-wire serial interface, allowing network administrators to monitor real-time operating parameters including optical Tx/Rx power, voltage, temperature, and laser bias current.
LINK-PP LQ-LW100L-ER4C 100G QSFP28 Certification
The LINK-PP LQ-LW100L-ER4C 100G QSFP28 transceiver meets stringent global regulatory standards, carrying official certifications including CE, FCC, UKCA, UL, REACH, and RoHS for safe, eco-friendly network deployment.
LINK-PP implements an exhaustive quality testing program for every LQ-LW100L-ER4C transceiver, verifying electrical impedance, optical output, jitter, and continuous packet stability before factory release.
LQ-LW100L-ER4C Quality Certifications
Fully accredited with ISO9001, CE, FCC, UKCA, and UL compliance, the LQ-LW100L-ER4C guarantees exceptional build quality, electromagnetic compatibility, and long-term operating durability under demanding enterprise 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.
LQ-LW100L-ER4C Certified for Reliable Host-Device Compatibility
Standardized to QSFP28 MSA and CAUI-4 specifications, the LQ-LW100L-ER4C ensures seamless plug-and-play compatibility across major switches, routers, and transport gear without configuration errors or lock-ins.
Every LINK-PP QSFP28 optical module undergoes comprehensive laboratory inspection to guarantee flawless signal transmission, zero packet loss, and rock-solid reliability.
Optical Spectrum Test
Validates precise LAN-WDM center wavelengths and ensures high side-mode suppression ratio for optimal transmission.
Eye Pattern Test
Verifies transmitter eye mask compliance, low jitter, and clean optical signal integrity at 100G.
Bit Error Rate Test
Confirms error-free data throughput and receiver APD sensitivity across 40km long-haul single-mode fiber links.
Temperature Test
Evaluates thermal stability to ensure sustained 0°C to 70°C commercial case operating performance.
Product Shipping for LINK-PP LQ-LW100L-ER4C 100G QSFP28
LINK-PP guarantees secure packaging and prompt worldwide delivery for every LQ-LW100L-ER4C 100G QSFP28 optical module order.
Anti-Static Protective Packaging
Individual ESD-shielded blister packaging prevents electrostatic damage during handling.
Shock-Resistant Transport Protection
High-density foam padding safeguards optical connectors against impact during transit.
Fast Order Processing and Dispatch
Standard orders are processed quickly with rapid warehouse fulfillment schedules.
Global Logistics and International Delivery
Reliable international courier partnerships ensure swift and traceable worldwide door-to-door delivery.
Installing the LINK-PP LQ-LW100L-ER4C is straightforward: insert the hot-pluggable QSFP28 module into the host port until it clicks, connect single-mode duplex LC fiber patch cords, and verify link status via standard switch CLI and DOM readings.
LQ-LW100L-ER4C 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 LQ-LW100L-ER4C 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! For rugged outdoor deployments, we highly recommend the LQ-LW100L-ER4I industrial-grade model. It provides the exact same 100G LAN-WDM performance and 40km reach over single-mode fiber, but operates reliably in extreme environments with temperatures ranging from -40°C to +85°C. By
admin
A:
Yes, we provide highly competitive wholesale discounts for enterprise bulk purchases. For an order of 150 units, you will receive a significant price reduction compared to the retail rate. You can directly contact our sales team for an official quote to optimize your project budget. By
admin
A:
Not at all! The LQ-LW100L-ER4C is fully MSA compliant and rigorously tested for multi-brand interoperability. You can expect plug-and-play performance with Cisco, Juniper, Arista, and other major switches, ensuring seamless DCI (Data Center Interconnect) connections without any proprietary hardware alarms. By
admin
A:
You will need standard Single-Mode Fiber (SMF) cables terminated with Duplex LC connectors. To reach the maximum 40km distance securely over the LAN-WDM wavelength, ensure that host FEC (Forward Error Correction) is enabled on your switch ports. Without FEC enabled, the module flawlessly supports up to 30km. By
admin
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495599
464603
P***z
Hong Kong
Verified
Purchase
5 .0
2026-07-28
Tested these 1310nm LAN-WDM transceivers on a mixed Cisco and Arista DCI setup. DDM features showed stable optical power and temperature. Huge cost saver compared to OEM modules. Highly recommended!
Please write comments with more than three
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495599
464610
A***z
Czech Republic
Verified
Purchase
5 .0
2026-05-15
Great 100GBASE-ER4 Lite replacement. We pushed it to 30km without FEC and the signal integrity remained flawless. Flawless DOM monitoring via our dashboard. A massive win for our network budget.
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character.
495599
464602
D***e
Peru
Verified
Purchase
5 .0
2026-05-08
Using this 100G ER4 module for cell tower backhaul. The Duplex LC SMF interface clicked in smoothly. 0°C to 70°C commercial temp is fine for our climate-controlled outdoor cabinets.
Please write comments with more than three
character.
495599
464607
N***n
Sweden
Verified
Purchase
5 .0
2026-03-12
Deployed 50 of these LQ-LW100L-ER4C units for our campus network upgrade. The EML transmitter and APD receiver handled the 35km SMF run perfectly with FEC on. Zero errors so far!
United States · English · USD
