You’Ve probably seen it on contacts for everything from ram to hdmi to memory cards or these cpu pillars from they’re actually way softer than i never touched one before. But why is it used so widely? I mean copper does a fine job of conducting electricity. So why do we need to use gold well, you’re, right about copper, but gold is superior in some key ways that make it a really good choice for certain applications for one gold is very non reactive and resists corrosion and tarnishing, even though gold is slightly less Conductive than copper, it still offers electrons extremely little resistance, and you don’t have to worry about it. Reacting with chemicals in the environment as much as you do with copper, which is why this baby is still looking good and considering that most electronic components use low voltages and current levels. A small amount of tarnish on the conducting material can have a big impact on signal integrity so for intricate connections, many manufacturers don’t take their chances with anything other than gold. This leads well into the next point. Gold is a soft, incredibly ductile metal, it’s, very easy to work into any shape and size you might need, and, although copper can obviously be drawn into wire, gold is even softer and can be stretched thinner, making it ideal when you think about how small some of These connections are we’re talking only a few micrometers meaning gold’s softness, combined with its relative non reactivity, make it a great choice.

In fact, gold is very popular for what’s called wire bonding the act of connecting a semiconductor die to the package that holds it like what you might see on your typical desktop cpu gold can carry a lot of heat without melting or cracking, so it won’t hurt Your performance just because it’s inside the hot environment of your cpu package, this is especially important in automotive applications. Our cars are becoming packed with more and more electronics, some of which control critical systems. You don’t want an autonomous driving feature to fail when you’re going down the highway at 70 miles an hour, so gold is used because it’s resistant to the thermal and environmental hazards your car can encounter while it’s in motion. Additionally, gold is very easy for modern manufacturing devices to bond quickly, so it allows chips to roll off the line in large numbers, but gold is also useful for applications. You might actually see every day. You know how more premium cables are sold with gold plated connectors. Although this doesn’t do anything to make your signal faster, it does keep the connector from wearing down as quickly. Although gold is a soft metal, it actually provides good resistance to wear and tear when it’s alloyed, with a small amount of another metal such as nickel. Okay. Okay, i get it. Gold is awesome. We love gold, but it’s super expensive right. How can we even afford our gadgets if all this gold is in all of them? Well, it turns out that you don’t need a whole lot of gold for most electronic applications, since it’s mainly used for small intricate connections.

Your typical smartphone contains less than a dollars worth of gold, so even though it’s obviously more expensive than copper, its advantages still make it the most sensible choice in many situations. But one thing to keep in mind is that, unfortunately, not very much of the total gold used in electronics is ever reclaimed. This means that the cost of gold in manufacturing can and has gone up over time. So if you’ve got an old, pc or phone that you’re not selling and just need to dispose of, remember to recycle it properly and to help keep the price of gold under control. That’S my psa for today and remember that those cash for gold places won’t accept your old motherboard i’ve tried big. Thank you to ifixit for sponsoring today’s video ifixit makes compact tool kits with all the essential bits to fix small electronics. Minnow has 16 steel driver bits that work with most laptops, desktops and smartphones. Moire has 32 bits with the additional bits for fixing things like home appliances and furniture and both have magnetic lids built in sorting trays and a four millimeter swivel top driver all wrapped up in a canvas tool. Roll all tools are backed by fix this lifetime warranty. So repair your devices today and learn more by going to for slash techwiki. So thanks for watching guys, if you liked this video hit like hit subscribe and hit us up in the comments section with your suggestions for videos that we should cover in the future.