What to look for when purchasing a SFP + DAC Twinax cable


What is SFP + DAC Twinax cable?

10G SFP + DAC is connected to the SFP + housing by copper connection via a twinax cable unit. It replaces the advanced optical transceiver required for Ethernet distribution and surprisingly reduces power consumption, latency and setup time. Based on the above, its previous goal is to advance to a fashionable 10G network with requirements for short distances and high speeds. With a limited transmission length of up to 12 m, SPF + DAC is extremely popular for intra-rack and inter-rack connections. Included are connections to top-of-rack switches and servers, as well as connections between garage units in a single rack or adjacent rack.

Active or passive?

In general, SFP + DAC active cable is much more expensive than passive cable. This is because it requires direct current to integrate signal processing circuits into the built-in connections of SFP + DAC active cable with a period link of up to 12m, but the passive cable contains no electrical additives and therefore requires very little power to operate. The recommendation on whether to choose lively or passive depends on the transmission distance you need: passive for transmission links that are not longer than 7m, active for links larger than 7m.

Brand or compatible?

An OEM SFP + DAC is significantly more luxurious than a well-suited SFP + DAC. Customers are strongly advised, based on similar companies that are popular, to look for well-matched SPF + DAC twinax cable with competitive price but equal performance as branded goods. By carefully testing and verifying, 10Gtek SFP + to SFP + copper provides twinax cable that is compatible with leading manufacturers such as Cisco, Juniper, Arista, Brocade and Extreme, among others. As a result, cost-effectiveness is no longer an obstacle to connecting to different brands of devices.

AWG and length

Wire Gauge is another important factor to consider when buying SFP + DAC twinax cable, which comes in unique specifications of 24AWG, 26AWG, 28AWG and 30AWG. To explain, the 24AWG (lively) is designed to hold a length of up to 12m, but the 30AWG (lively) can only support a length of up to 7m. That is, the lower the AWG score required, the greater the transmission distance.

Can SFP + DAC Twinax cable be used to connect SFP ports?

Due to its backward compatibility, you can connect an SFP + DAC twinax cable to an SFP port. However, SFP cable is not always well suited for SFP + ports; even if it is connected to SFP + ports, it does not work because it is not a 10Gb / s factual speed design of SFP cable.