The Broadcom QDD-SR8-400G Compatible LINK-PP module is a high-performance 400G QSFP-DD SR8 optical transceiver engineered for modern data center interconnects. Utilizing advanced PAM4 modulation and an 8x50G electrical interface, this 400GBASE-SR8 commercial-grade module ensures reliable multi-lane data communication. It fully complies with IEEE 802.3cd and CMIS 4.0 standards, delivering exceptional networking efficiency.
Broadcom Part Number
QDD-SR8-400G
Vendor Name
LINK-PP
Form Factor
QSFP-DD
Max Data Rate
425Gbps
Connector
MPO-16/APC
Media
MMF
Wavelength
850nm
Max Cable Distance
70m@OM3/100m@OM4
Transmitter Type
VCSEL
Receiver Type
PIN
Modulation (Electrical)
8x50G-PAM4
Modulation (Optical)
8x50G-PAM4
DSP
TX and RX
Inbuilt FEC
No
DDM/DOM
Supported
Operating Temperature range
0°C to +70°C
Protocols
QSFP-DD MSA, CMIS 4.0, IEEE 802.3cd
Warranty
5 Years
Key Features of Broadcom QDD-SR8-400G Compatible LINK-PP 400G QSFP-DD
The Broadcom QDD-SR8-400G Compatible LINK-PP delivers outstanding efficiency with a maximum power consumption of under eight watts. This hot-pluggable 400G QSFP-DD module integrates a highly reliable VCSEL array and PIN PD array. Operating smoothly on a single 3.3V power supply, it guarantees superior thermal performance and stable signal integrity.
This eight-channel pluggable parallel fiber-optic transceiver provides robust 400G connections. The QDD-SR8-400G utilizes cutting-edge optical components to facilitate rapid data transfer, making it an indispensable asset for upgrading high-density enterprise networks and scaling cloud infrastructures.
QDD-SR8-400G: 400G Connectivity for AI Data Centers
Designed for demanding artificial intelligence workloads and cloud networks, the QDD-SR8-400G guarantees massive bandwidth capabilities. This 400G QSFP-DD transceiver accelerates machine learning data processing and fulfills stringent 400GE interconnect requirements across next-generation AI data centers.
QDD-SR8-400G Module with 850nm Wavelength
Operating at a nominal 850nm wavelength, the QDD-SR8-400G is optimized for short-range multimode fiber systems. Its integrated 850nm VCSEL technology ensures precise optical transmission, minimizing signal degradation while maintaining excellent spectral efficiency across all data lanes.
QDD-SR8-400G Module Supporting 100m Transmission
This 400GBASE-SR8 module achieves impressive reach for internal data center routing. The QDD-SR8-400G supports transmission distances up to 70 meters over OM3 multimode fiber and reaches up to 100 meters using OM4 fiber with Forward Error Correction.
QDD-SR8-400G Module with MPO-16/APC Interface
Equipped with a single-row MPO-16/APC optical connector, the QDD-SR8-400G ensures low insertion loss and high optical return loss tolerance. This standardized physical interface facilitates seamless patch panel integration and simplifies high-density fiber cabling deployments.
QDD-SR8-400G Module with DOM for Real-Time Monitoring
Featuring integrated Digital Optical Monitoring, the QDD-SR8-400G allows network administrators to continuously track critical parameters. This DOM functionality monitors operating temperature, voltage, and optical power in real-time, significantly improving fault isolation and overall network reliability.
The Broadcom QDD-SR8-400G Compatible LINK-PP complies with rigorous international regulatory standards. These 400G QSFP-DD modules guarantee safe, environmentally friendly, and legally compliant operation across diverse global enterprise networks.
Every QDD-SR8-400G undergoes a comprehensive quality testing program before deployment. This meticulous evaluation process ensures consistent performance, maximum durability, and fault-free operation in high-stress data environments.
QDD-SR8-400G Quality Certifications
Demonstrating exceptional manufacturing standards, the QDD-SR8-400G holds CE, FCC, UKCA, UL, and REACH certifications. Furthermore, this optical transceiver is fully compliant with RoHS 2.0 environmental regulations.
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.
QDD-SR8-400G Certified for Reliable Host-Device Compatibility
Validated through extensive compatibility protocols, the QDD-SR8-400G integrates effortlessly with major network switches and routers. This certified interoperability ensures seamless plug-and-play functionality without vendor lock-in issues.
Advanced laboratory examinations validate the exceptional stability of our 400G QSFP-DD optical transceivers, confirming their readiness for mission-critical enterprise communication networks.
Optical Spectrum Test
Verifies the 850nm center wavelength and spectral width to guarantee precise optical signal transmission.
Eye Pattern Test
Analyzes PAM4 modulation signal integrity to ensure optimal clarity and minimize transmission distortion risks.
Bit Error Rate Test
Confirms ultra-low bit error rates to ensure flawless data integrity across 400G high-speed connections.
Temperature Test
Validates reliable transceiver operation across standard commercial case temperatures ranging from 0 to 70°C.
Product Shipping for Broadcom QDD-SR8-400G Compatible LINK-PP 400G QSFP-DD
We implement strict logistics protocols to ensure your 400G QSFP-DD optical transceivers arrive in pristine condition, ready for immediate data center installation.
Anti-Static Protective Packaging
Each transceiver is sealed in premium electrostatic discharge protective packaging bags.
Shock-Resistant Transport Protection
Custom-molded foam inserts prevent mechanical damage during rigorous global transit conditions.
Fast Order Processing and Dispatch
Streamlined inventory management guarantees rapid order fulfillment and priority dispatching services.
Global Logistics and International Delivery
Trusted international courier partnerships ensure highly secure and trackable worldwide shipping.
Installing the QDD-SR8-400G is extremely straightforward. Simply slide the hot-pluggable QSFP-DD transceiver into your network switch port until secured, then connect your MPO-16 patch cable to create a reliable 400G high-bandwidth link for immediate enterprise deployment.
QDD-SR8-400G 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 QDD-SR8-400G 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'll need multimode fiber (MMF) cables terminated with MPO-16/APC (Angled Physical Contact) connectors. This interface supports up to 70 meters of multi-lane data transmission over OM3 fiber, or up to 100 meters over OM4 fiber using Forward Error Correction (FEC). By
admin
A:
Absolutely. The LINK-PP LQD-M85400-SR8C is meticulously coded to support Cisco, Arista, and other major brands like Juniper and Mellanox. It’s fully CMIS 4.0 compliant, ensuring plug-and-play interoperability across mixed switch fabrics. By
admin
A:
Definitely. The LQD-M85400-SR8C strictly complies with IEEE 802.3cd and QSFP-DD MSA protocols. On the regulatory side, it carries CE, FCC, UKCA, UL, and RoHS 2.0 certifications, completely satisfying environmental safety and global compliance audits. By
admin
A:
It delivers identical core performance to original OEM modules but at a fraction of the cost. Powered by top-tier VCSEL and PIN PD arrays with 8x50G PAM4 modulation, it guarantees the same 425Gbps bandwidth and stability as branded counterparts, backed by our 5-year warranty. By
admin
A:
This specific LQD-M85400-SR8C is rated for commercial temperatures (0°C to 70°C), making it ideal for indoor data centers, campus fiber networking, and enterprise NAS. It is not rated for harsh outdoor environments. Please reach out to support for our industrial-grade (-40°C to 85°C) 400G alternatives. By
admin
Please write comments with more than three
character.
495067
495201
D***n
Viet Nam
Verified
Purchase
5 .0
2026-08-13
We needed reliable 400G QSFP-DD optical modules for campus fiber networking. Testing showed 100m OM4 transmission without a single FEC error. The 0 to 70C commercial temp range handles our server rooms easily. ❄️
Please write comments with more than three
character.
495067
495205
J***n
Poland
Verified
Purchase
5 .0
2026-07-18
Deployed 50 units of the LINK-PP LQD-M85400-SR8C for our new AI data center. The 8x50G-PAM4 modulation holds up beautifully under heavy load. IEEE 802.3cd compliance ensures seamless interoperability across our mixed OEM environment.
Please write comments with more than three
character.
495067
495195
J***z
Canada
Verified
Purchase
5 .0
2026-03-16
As a network engineer, I demand strict CMIS 4.0 support. This 850nm MMF transceiver delivers precisely that, integrating perfectly with both Dell and HPE Aruba cores. High-density MPO-16/APC fiber cabling was a breeze.
United States · English · USD
