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 Post subject: SIM cards and bga chips
PostPosted: Tue Oct 02, 2018 2:41 pm 

Joined: Wed May 27, 2015 12:22 am
Posts: 3
Do you buy cell phone SIM cards and the black top/ green bottom bga chips?
Thanks,
Steve


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PostPosted: Tue Oct 02, 2018 5:09 pm 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 4619
Location: Low DOS
SIM cards are bought in bulk (over half a pound or so) at an unlisted rate.

BGA chips go as green fibre with metal

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-- my grades are my own and do not represent an offer from boardsort, nor are they guaranteed. Please keep that in mind.


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PostPosted: Tue Oct 02, 2018 10:32 pm 

Joined: Wed May 27, 2015 12:22 am
Posts: 3
I have 8-9lbs. of sims. How much do they bring?


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PostPosted: Tue Oct 02, 2018 10:37 pm 

Joined: Wed May 27, 2015 12:22 am
Posts: 3
Those BGA's reported yield 4-5 grams/lb. the green fibre prices seems low?


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PostPosted: Wed Oct 03, 2018 3:43 am 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 4619
Location: Low DOS
Sims range depending on the multiple things. Chris could probably tell you an estimated rate if you want to email him or call Boardsort

Two things to keep in mind with ICs is
A) any yield you see on the Internet is wrong and
B) any yield you see on the Internet is wrong.
The oh so sought after Pentium Pro is a good example.
I’ll take a single original 4004 or 4040 for refining over 10 Pentium pros every day of the week!

On a generic average you’re looking at 1-2 grams of gold per lb of chips on the higher end of the scale. Once you factor in materials cost you figure it eats about a quarter of the value away.

Granted a core or fx cpu is going to be a better yield than a 9765 bridge chip but when all things are averaged together it makes sense.

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-- my grades are my own and do not represent an offer from boardsort, nor are they guaranteed. Please keep that in mind.


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