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The LINK-PP LQ-CW40-FR4C is a high-performance 40G QSFP+ transceiver designed for efficient optical communication. Built for single-mode fiber applications, this commercial-grade module perfectly complies with the IEEE 802.3ba 40GBASE-FR4 standard. It features a hot-pluggable form factor and operates reliably within a standard temperature range, ensuring stable enterprise networking connectivity.
| LINK-PP Part Number | LQ-CW40-FR4C | Vendor Name | LINK-PP |
| Form Factor | QSFP+ | Max Data Rate | 40Gbps |
| Wavelength | 1271nm, 1291nm, 1311nm, 1331nm | Max Cable Distance | 2km |
| Connector | Duplex LC | Media | SMF |
| Transmitter Type | DFB | Receiver Type |
PIN |
| Operating Temperature Range | 0°C to +70°C | Protocols | 40G Ethernet, Fibre Channel, SATA/SAS3, MSA Compliant |
| Host FEC | Supported | DOM/DDM |
Supported |
This advanced optical module delivers exceptional efficiency with a low power consumption of under 3.5W. Utilizing a high-quality DFB laser and sensitive PIN detector, the transceiver ensures superior signal integrity. It supports data rates up to 11.3Gbps per channel seamlessly.
As a robust 40G optical transceiver, this device is engineered to meet modern datacom demands. It delivers cost-effective and high-speed data transmission, making it an excellent hardware choice for upgrading enterprise routing and switching equipment.
This module is an ideal solution for a reliable 40G campus link and seamless data center interconnect infrastructure. It provides organizations with the necessary bandwidth to support high-density computing and rapid data sharing across large enterprise networks.
Utilizing advanced optical multiplexing, this CWDM4 optical transceiver consolidates four data lanes onto a single fiber pair. This innovative MUX/DEMUX design significantly maximizes existing infrastructure, helping network administrators save fiber resources and reduce overall cabling costs.
Operating on coarse wavelength division multiplexing technology, the device precisely transmits optical signals across four distinct center wavelengths. By utilizing 1271nm, 1291nm, 1311nm, and 1331nm channels, it effectively prevents signal interference while maintaining high-speed throughput.
Engineered for medium to short-range optical link requirements, this component guarantees a stable 2km reach over standard SMF. It bridges the gap between different facility rooms, providing a dependable solution for medium-distance telecommunication tasks.
Featuring a standard LC duplex connector, the transceiver integrates effortlessly into standard single-mode fiber patch panel setups. This universal optical interface ensures quick insertion, firm physical connection, and minimal insertion loss during high-capacity data transfers.
Equipped with comprehensive digital diagnostic monitoring capabilities, administrators can track vital module status metrics instantly. Accessible via a standard 2-wire I2C interface, this DOM feature reports real-time temperature, voltage, and optical power parameters for proactive maintenance.
Demonstrating strict adherence to industry compliance, this pluggable device aligns fully with the SFF-8436 MSA standard. Users are assured of maximum safety and regulatory conformity globally.
Every single unit undergoes a rigorous factory inspection and comprehensive optical testing program. This multi-step verification process guarantees that each delivered component performs flawlessly under heavy workloads.
This premium product holds essential global approvals, including CE, FCC, UKCA, and UL marks. Furthermore, being REACH and RoHS compliant ensures it meets strict environmental safety standards.
Expertly coded for broad switch compatibility, the firmware ensures seamless integration with major network router brands. This certification prevents vendor lock-in and simplifies complex enterprise IT deployments.
To guarantee long-term network reliability, multiple stages of strict performance validation are conducted. These precise laboratory assessments ensure optimal functionality before shipment.
This verifies center wavelength precision and verifies adequate side-mode suppression ratio for clarity.
Engineers evaluate optical signal integrity to guarantee the transmitter produces clear, jitter-free transmissions.
Long-duration BERT evaluations confirm absolute data transmission accuracy across the entire network link.
Cycling through the 0°C to +70°C commercial operating temperature ensures excellent thermal stability.
We employ professional and secure logistics protocols for optical equipment delivery. Our packaging strategies safeguard your delicate hardware components during global transit.
Sealed in premium ESD bags to maintain a completely static-free environment.
High-density foam inserts provide superior impact resistance against mechanical transit shocks.
Automated warehouse dispatch systems ensure quick fulfillment of all urgent network orders.
Partnered with top-tier courier networks for highly reliable and rapid worldwide shipping.
Experiencing this hot-swappable installation is remarkably straightforward for any IT technician. Simply align the module with a compatible network switch port, push until the latch clicks securely, and immediately connect your fiber patch cords to establish connectivity.
LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.
Professional technical guidance to help customers select the most suitable LQ-CW40-FR4C modules based on network architecture and application requirements.
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.
LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.
15-day no-reason return and refund
Free replacement for dead-on-arrival (DOA) or defective items within the initial period
Free repair services for manufacturing defects throughout the warranty period
Warranty exclusions and conditions apply
Compatible | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP |
Data Rate (Max) | 40Gbps | 40Gbps | 40Gbps | 40Gbps | 40Gbps | 40Gbps |
Wavelength | 1271nm, 1291nm, 1311nm, 1331nm | 1271nm, 1291nm, 1311nm, 1331nm | 1271nm, 1291nm, 1311nm, 1331nm | 1271nm, 1291nm, 1311nm, 1331nm | 1295.56nm, 1300.05nm, 1304.58nm, 1309.14nm | 1295.56nm, 1300.05nm, 1304.58nm, 1309.14nm |
Connector | Duplex LC | Duplex LC | Duplex LC | Duplex LC | Duplex LC | Duplex LC |
Cable Distance (Max) | 2km | 10km | 20km | 40km | 80km | 60km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
Operating Temperature | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C |
Form Factor | QSFP+ | QSFP+ | QSFP+ | QSFP+ | QSFP+ | QSFP+ |
Transmitter Type | DFB | DFB | DFB | DFB | EML | DFB |
Receiver Type | PIN | PIN | PIN | APD | APD | APD |
Protocols | 40G Ethernet, Fibre Channel, SATA/SAS3, MSA Compliant | OTN OTU3, 40G Ethernet, Fiber Channel, SATA/SAS3, MSA Compliant | QSFP+ MSA, SFF-8436 | OTN OTU3, 40G Ethernet, SATA/SAS3, MSA Compliant | QSFP+ MSA, IEEE 802.3ba Compliant | OTN OTU3, 40G Ethernet, SATA/SAS3, MSA Compliant |
Host FEC | Supported | Supported | Supported | Supported | ||
DOM/DDM | Supported |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: The specs say 0°C to 70°C. Do you make an industrial wide-temperature version for our outdoor telecom cabinets? By L***t on 2026-06-14
A: This specific LQ-CW40-FR4C is our commercial-grade module designed for indoor data centers. For harsh outdoor environments like base station backhauls, we highly recommend our industrial-grade variants which support extreme temperatures from -40°C to 85°C. Please contact our support team to spec out the right wide-temp 2km option for your setup. By admin on 2026-06-14
Q: We are looking to bulk deploy these across our new UK datacenter. Do you guys offer any B2B pricing discounts for orders over 100 units? By M***e on 2025-08-23
A: Yes, we provide tiered wholesale discounts. For orders exceeding 100 units, the price drops significantly, and any order over $600 includes free global shipping. Feel free to contact our sales team directly for a custom quote! By admin on 2025-08-23
Q: Can you confirm if this optic strictly complies with IEEE 802.3ba 40GBASE-FR4 standards? We need it for a government compliance project. By D***z on 2025-07-07
A: Yes, it is 100% compliant with IEEE 802.3ba 40GBASE-FR4, RoHS, and MSA standards. Built with premium DFB lasers and PIN receivers, it easily meets the rigorous regulatory and performance requirements for both government and enterprise telecom networks. By admin on 2025-07-07
Q: What kind of fiber patch cords do I need for this? Should I use MPO or standard LC? By R***n on 2025-04-12
A: This 40Gbps module features a standard Duplex LC interface. You will need standard Single Mode Fiber (SMF) patch cables, not MPO. It is designed for simple, plug-and-play integration into existing duplex LC fiber panels up to a 2km transmission distance. By admin on 2025-04-12
Q: Hello, will this 40G QSFP+ transceiver play nice if we mix Cisco Nexus and Arista switches in the same rack? By D***r on 2024-12-16
A: Absolutely! The LQ-CW40-FR4C is fully MSA compliant and undergoes strict multi-brand switch testing. It interoperates seamlessly with Cisco, Arista, Juniper, and other major OEM equipment without triggering vendor lock-in errors. By admin on 2024-12-16
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