Ever wonder why some cables use bare copper conductors and others are tinned copper? Or in what circumstances you would use tinned copper instead of bare copper? You're not the only one! In a recent Belden blog post, Steve Lampen detailed the differences between the two, when you should use tinned copper cables or bare copper in AV installations, along with some of the advantages of each. Here's an excerpt from that blog post:
Tinned copper is an easy and effective way of keeping a copper conductor from tarnishing, from becoming oxidized. You've probably seen copper when it is oxidized. It turns green. The Statue of Liberty is a famous example of copper oxidation. The real problem is the fact that this green copper oxide is a semiconductor. This is bad news on top of a really good conductor like copper. There are two ways to prevent copper oxide. One is to put something over the metal to prevent air from reaching it. No air, no oxide, no corrosion. However, if you strip off this layer (usually plastic) that leaves the conductor in contact with air and in danger of oxidizing. Then you might have to use a connector that also seals out air. Soldering wires helps seal in the copper. Other connectors, such as many data connections, are "insulation displacement". This only makes contact in one specific place on the wire and the wire on either side is still covered with plastic insulation. The other way to prevent copper oxide is to put a layer of tin on the conductor. Then, even with the insulation stripped away, the air is much less likely to get to the copper and cause oxide to form. Click here to read the rest of the blog post. |
Regardless of your signal and frequency, Accu-Tech can help you find the right Belden AV cables for your facility or job site. For more information on Belden AV solutions, please contact your local Accu-Tech representative.