how?

[superten67]

hi guys just afer some advice on how you would deal with these?normally i just boil the chips in hot water and pry off the lid and then they are scrap steel.
but i did a batch this morning and once the lid is off there is quite clearly a section inside the lid which has the ic soldered to it,and underneath that there is quite a large section of gold plating....im unsure how to proceed.
has anyone got any ideas?

 

[etack]

What are you talking about? A pic would be cool or at least a description of the product.

Eric

 

[superten67]

sorry there should be a pic attached hang on a mo.

 

[denim]

I use a sulfuric electrolytic deplating cell like the one in Laser Steve's video. Works well. I save these until I have a couple hundred then I process them.

 

[superten67]

ok thanks for that i did think that but thought id check am i right in thinking theres too much base metal for the traditional methods?

 

[etack]

That CPU heat spreader is plated Cu. The amount of gold is almost nothing, the cell would be the most profitable if time is not added as a cost. the solder is Ag solder but the money is the CU.

Eric

 

[superten67]

thanks for the input.