Old Zilog Chips

[mls26cwru]

I figured I would check here to see if any of you guys know much about these... I found some of these older Zilog chips in a few allen-bradly controller boards. Does anyone know about yields? or if there is collector value to these?

Thanks again,
Mike

 

[goldsilverpro]

The larger 40 lead ones run about 5g of gold per pound. The 28 lead ones a bit more.

 

[glorycloud]

As it says on top of the chip, the Z80B is a CPU. If the pins are there
and in decent shape, that one may be worth $10 to $15 to a collector.

The others are "support chips" and although pretty and gold capped,
they don't normally carry a lot of collector value. It is normally only
the CPU's that the collectors are interested in owning.

However, if they are still in the original packaging they will sell. 8)

 

[mls26cwru]

Thank you guys, I guess I will try to put the CPUs up on Ebay and maybe save the other ones for self refining if they have that much gold in them

I picked them up in a large lot of controller boards and all the chips are in pristine condition, so I was very careful when removing them... I have about 1.5lbs of the larger ones! Picked up the lot for $100, so im grinning 8)

GSP - Is there any other PM's in decent amounts to look out for if I do try to refine these? I have never attempted ceramic chips before.

 

[goldsilverpro]

GSP - Is there any other PM's in decent amounts to look out for if I do try to refine these? I have never attempted ceramic chips before.

The legs are held on with a silver/copper braze but It's such a relatively small amount, dollarwise, I wouldn't worry about it. There are no platinum group metals. It's strictly a gold proposition.