Computers are a large part of my every day life, from my day job to my hobbies like music production. For over a decade now, I have been selling parts I no longer need on services like eBay. I try to maintain a good and professional status and rating for the times where I do sell things on the internet.
This past week, I needed to sell several parts out of my previous powerhouse desktop computer on eBay, as I have built a new system. I no longer had the original boxes nor antistatic bags for any of the hardware. I've heard from some old timers about wrapping sensitive computer components in tinfoil (aluminum foil) to act as a faraday cage.I've done a lot of research on that. I could not, in good conscious, wrap sensitive computer components in tinfoil and ship them off to people in this dry winter air. I've also read that tinfoil can act as a conductor between capacitors on components like a motherboard.
I decided to go on Amazon and found this bulk-pack of ESD shielding bags. This is a great and very affordable assortment of bags. The smaller ones are press-and-seal. I love that the sensitive electronics stickers were included as well.
I would definitely recommend this product to anyone who gets into the business of selling used computer components. In this day and age with chip shortages, I don't think computer components (even old) should get tossed to the curb. Sell or donate them, and do so using this ESD shielded bagging.
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Even 'conductive' ESD packaging materials have significantly higher resistivity than aluminum, so the way that discharges occur through these materials will differ. A more resistive material will allow a slower discharge, resulting in lower currents, which may be beneficial. On the other hand, a more conductive material maintains a lower potential difference across it when a given current flows. Hypothetically, if all pins of a device are in contact with something really conductive, like aluminum foil, then probably won't be much of an issue. But if some pins are NOT in contact, and a discharge is applied, then it's possible that the higher conductivity will allow a more rapid discharge through the device than an otherwise equivalent 'conductive' ESD material would and therefore more likely to result in damage to the device. In practice the details probably matter quite a bit. Since aluminum foil does pierce easily and also has no elasticity it seems very easy to end up losing contact between the foil and the device with vibration/jostling, it certainly seems like a poor substitute for a proper ESD shielding bag. But it's also probably better than nothing as long as you're careful about wrapping it.
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