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Bjewell

Member
Joined
Feb 6, 2017
Messages
9
I have a new customer throwing the out as scrap. I see gold terminals on these PCBs correct?
 

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I see. I'm having a hard time finding the actual amount of gold used (if any)

There's another set of gold colour pads on the front side of the PCB. Are these worth collecting? Will they ever generate a decent yeild? Or is this more of a fools gold to collect
 
If you have access to large quantities, save them up. There is always eBay if the value isn't worth your effort to refine. Get a pound or two together and do a yield test on them, then you know how to proceed from there.
 
If it is ENIG, it's only worth about 1/2 cent per cm2

If it's gold plating of standard finger thickness (30 millionths of an inch), it's worth about 10 times that - 5 cents per cm2
 
Half a cent per square cm is a little depressing. Guess I need to calculate how many of these can be collected a week.

I guess ill have to collect for a few weeks and try to salvage some gold and see what kind of a yeild I can get
 
My advice if you want to process this material: cut as close as you can to the gold ENIG. Put all the gold bearing material to the side and save them up. Keep collecting until you reach several kilograms or more, as I think that material doesn't really weigh that much, before processing that lower end scrap.
 
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