What is at SFP+ DAC cable?

What is at SFP+ DAC cable?

Direct Attach Copper, referred to as DAC, is generally translated as a direct connection cable or a direct connection copper cable. There are two types of Direct Attach Copper:

1.10G SFP+ DACs

2.40G QSFP+ to 4 SFP+

The ports of this cable cannot be replaced, and the module head and copper sleeve cannot be separated. Today we mainly talk about what is SFP+ DAC cable, and also talk about its features and advantages.

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SFP+ DAC is also known as SFP+ direct attach copper cable. SFP+ direct connection has a fixed length cable, usually 1m, 2m, 3m, 5m or 7m in length, using a small-sized cable and a small-sized SFP+ module, which has the advantages of low power, low cost and low delay. In data centers, copper cables are generally used to connect servers and storage area networks, and the most commonly used ones are direct attach copper cables (DAC, Direct Attach Copper Cable), among which passive copper cables are particularly used. Passive copper cables are the best solution for short-distance transmission due to their cheap price and high transmission speed. For example, 40G QSFP+ passive cable is a kind of passive copper cable. Because of its low power consumption, high efficiency, low cost and low delay, it is widely used in 40G LAN, HPC and SAN, and is suitable for flexible wiring.
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SFP+ DAC cable is a low-cost technical solution to replace 10G optical modules. Widely applicable to short-distance high-speed interconnection of 10G network cards, 10G switches, 10G servers, supercomputers, cloud computing, cloud storage networks, etc. Skyward telecom optical communication can provide you with 10G SFP+ high-speed cables from 1 meter to 15 meters.

1 SFP+ high-speed cable = (2 SFP+ 10 Gigabit optical modules + 1 pair of OM3 10 Gigabit optical fiber jumpers)

But in terms of cost, SFP+ cable can save about 50% of the economic cost, so it is favored by data center wiring.

Applications:

1. Working environment temperature: 0 ~ 70°C, 3.3V power supply, low power consumption: <2.0W 2. Support hot swap, meet SFP MSA product standard

3. Comply with the SFF-8431 standard and be used for the electrical interface of 10GB Ethernet and 10G Fiber Channel

4. The two-wire interface meets the management standard of SFF-8472 digital diagnostic monitoring terminal

5. Main scope of application:

※ Large-capacity I/O storage area network, network attached storage and storage server ※ Switched I/O, such as ultra-high bandwidth switches and routers ※ Data center cabling infrastructure ※ Connection between high-density network equipment

Product Features: ※ Support multi-gigabit data rate up to 10.5Gbps ※ Effective SFP+ solution, suitable for high-density and high-bandwidth ports ※ Meet EMI/EMC performance hot-swappable connection ※ High-precision control and minimized in-pair and pair-to-pair skew ※ AC coupling input and output, ultra-low line crosstalk

Product advantages:

※ Short distance: scientific layout design, with a more reasonable length, saving space;

※ Low power consumption: ultra-low power consumption, which saves power and is environmentally friendly;

※ Save money: not only reduce the cost when purchasing products, save electricity when using them, and improve the competitiveness of enterprises;

※ More stable: The fully optimized structural design reduces the use of electronic components, effectively avoids the repair rate caused by electronic components, and is more stable and durable.

Product high frequency test:

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Skyward telcom is a professional supplier of high-speed data connection product solutions, a high-tech enterprise integrating R&D, production and sales.

The product line includes: 40G QSFP series;

Related tags : SFP+ passive copper cable optical module

左锦云

Shenzhen Walsun Optics Technology Co Ltd - Head of Overseas Operations

1 年

SFP+ cable is a form of high-speed cable with SFP+ connector modules on either end. It uses the connector to transmit and receive 10Gbps data through one paired transmitters and receivers over a thin twinax cable or a fiber optic cable. They are suitable for in-rack connections between servers and switches, saving significant costs and power in short-reach applications. 10G SFP+ cables can be classified into 10G SFP+ DAC and 10G SFP+ AOC. More Products https://www.walsun.com/products/10G-SFP+_336_350_1.html

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