By Laney | 22 October 2024 | 0 Comments
The Important Certification for DAC Cables
A DAC (Direct Attach Copper) cable, commonly used in data centers and high-speed networking environments, is designed for short-range communication between network devices such as switches, routers, and servers. It typically has integrated transceivers at both ends, allowing it to transmit data at high speeds without needing separate optical transceivers.
Common Data Rates for DAC Cables:
The most important certification for DAC (Direct Attach Copper) cables is CEI (Conformity of Electronic Industries), which governs the electrical characteristics and performance of high-speed interconnects, including DAC cables. However, there are a few key standards and certifications relevant to the quality, interoperability, and performance of DAC cables in various networking environments:
1. IEEE Standards
2. SFF (Small Form Factor) Standards
Rollball International Co.,Ltd., created in 2000, located in Shenzhen, China, specialized in providing high performance all kinds direct attach cables from 10G SFP+ DAC to 400G QSFP-DD DAC Cables. All passed the aboves certification.
On optical transceiver products, Rollball is one of the earliest factories in china that successfully developed 10G series optical modules. At the present Rollball has XFP, X2, XENPAK, SFP+, SFP, DWDM SFP, GBIC series, which are widely compliant to Ethernet, SDH/SONET, SAN, Video monitor. Since put in market, our products is highly praised and trusted by domestic and international customers for its excellent performance and reasonable price.
On cable assemblies products like fiber patch cord, pigtail etc, We take care every step of production and every patch cord is tested with high standard before sending out of factory. We can also customize the different lead like SC/ST/FC/LC/MU/MTRJ/DIN/D4/MPO and length according to client’s special requirement.
In Rollball, we believe that the quality is the company's life. With the strict guidance of ISO9001: 2000, We do care for every detail, from supplier evaluation to raw material examination, from processing monitoring to final inspection, from packing to shipping.
Our mission is to provide our customers with high quality products and best service at the right price in due time to help them hold more market share.
Human Resource
In Rollball, we believe that the employee is the key source of company, and provide broad platform for employee career growth with company. Under the guidance of the company’s “employee is the first factor” strategy, Rollball actively extends employees’ personal development space and design personal career development path for employees. The company commit to its employee that their potential can be continuously developed in different directions with the company’s growth.
At the moment, We have about 50’s employees service in different office department and 150’s well trained workers in different production line. The company hold different type of party in each month to help the employee know each other and relax in out of office time.
Common Data Rates for DAC Cables:
- 10G SFP+ DAC: Supports a data rate of 10 gigabits per second (Gbps). These cables are used for 10G Ethernet and can span distances up to 7 meters.
- 25G SFP28 DAC: Supports a data rate of 25 Gbps and is often used in modern data centers for 25G Ethernet connections, with typical distances of up to 5 meters.
- 40G QSFP+ DAC: Supports 40 Gbps, commonly used for 40G Ethernet. The maximum length is usually 3-7 meters.
- 100G QSFP28 DAC: Supports 100 Gbps, typically used for 100G Ethernet. These cables are used for short distances up to 3-5 meters.
- 200G QSFP56 DAC: Supports 200Gbps, commonly used for 200G Ethernet.The maximum length is usually 3meters.
- 400G QSFP-DD DAC: Supports data rates of 400 Gbps, which is used in cutting-edge data centers for extremely high-speed connectivity.The distance can reach to 3 meters.
- DAC cables are typically used for very short distances (up to 7 meters), as signal attenuation over longer distances is a limitation with copper. For longer distances, Active Optical Cables (AOC) or fiber optics are preferred.
The most important certification for DAC (Direct Attach Copper) cables is CEI (Conformity of Electronic Industries), which governs the electrical characteristics and performance of high-speed interconnects, including DAC cables. However, there are a few key standards and certifications relevant to the quality, interoperability, and performance of DAC cables in various networking environments:
1. IEEE Standards
- IEEE 802.3: This is the most important Ethernet standard. Different parts of the 802.3 standard define various Ethernet speeds and media types:
- IEEE 802.3ae: Defines 10 Gigabit Ethernet (used with 10G DACs).
- IEEE 802.3ba: Defines 40 Gigabit and 100 Gigabit Ethernet (used with 40G and 100G DACs).
- IEEE 802.3by: Defines 25 Gigabit Ethernet.
- IEEE 802.3cd: Defines 50G, 100G, and 200G Ethernet.
- IEEE 802.3bs: Defines 200G and 400G Ethernet.
2. SFF (Small Form Factor) Standards
- SFF-8431: Defines the specifications for SFP+ DAC cables.
- SFF-8402: Defines specifications for SFP28 DAC cables used for 25Gbps Ethernet.
- SFF-8665: Defines the specifications for QSFP+ DAC cables (40Gbps).
- SFF-8679 and SFF-8636: Define specifications for QSFP28 DAC cables (100Gbps) and provide standards for high-speed electrical and management interfaces.
- SFP+ MSA, QSFP+ MSA, and QSFP28 MSA: Multisource agreements define the interoperability standards for the respective form factors of DAC cables. These MSAs ensure that DAC cables from different manufacturers are compatible with networking equipment from various vendors.
- Ensures that the DAC cables are free from hazardous substances such as lead, mercury, and cadmium, making them environmentally friendly.
- CE (Conformité Européenne): This certification is required for products marketed in the European Union. It ensures that the product meets health, safety, and environmental protection standards.
- FCC (Federal Communications Commission): Ensures that electronic equipment, including DAC cables, complies with the regulations regarding electromagnetic interference (EMI) in the United States.
- Specifies cabling requirements for DAC cables used in data centers, ensuring high-quality data transmission performance, low latency, and electrical performance.
- IEEE Standards (802.3): Most important for ensuring DAC cables comply with Ethernet networking requirements.
- SFF/MSA: Ensures compatibility and form factor standards.
- RoHS/CE/FCC: Environmental and regulatory certifications.
Rollball International Co.,Ltd., created in 2000, located in Shenzhen, China, specialized in providing high performance all kinds direct attach cables from 10G SFP+ DAC to 400G QSFP-DD DAC Cables. All passed the aboves certification.
On optical transceiver products, Rollball is one of the earliest factories in china that successfully developed 10G series optical modules. At the present Rollball has XFP, X2, XENPAK, SFP+, SFP, DWDM SFP, GBIC series, which are widely compliant to Ethernet, SDH/SONET, SAN, Video monitor. Since put in market, our products is highly praised and trusted by domestic and international customers for its excellent performance and reasonable price.
On cable assemblies products like fiber patch cord, pigtail etc, We take care every step of production and every patch cord is tested with high standard before sending out of factory. We can also customize the different lead like SC/ST/FC/LC/MU/MTRJ/DIN/D4/MPO and length according to client’s special requirement.
In Rollball, we believe that the quality is the company's life. With the strict guidance of ISO9001: 2000, We do care for every detail, from supplier evaluation to raw material examination, from processing monitoring to final inspection, from packing to shipping.
Our mission is to provide our customers with high quality products and best service at the right price in due time to help them hold more market share.
Human Resource
In Rollball, we believe that the employee is the key source of company, and provide broad platform for employee career growth with company. Under the guidance of the company’s “employee is the first factor” strategy, Rollball actively extends employees’ personal development space and design personal career development path for employees. The company commit to its employee that their potential can be continuously developed in different directions with the company’s growth.
At the moment, We have about 50’s employees service in different office department and 150’s well trained workers in different production line. The company hold different type of party in each month to help the employee know each other and relax in out of office time.
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