CPU compnent

Images made through a microscope. All subject types.

Moderators: Pau, rjlittlefield, ChrisR, Chris S.

Olympusman
Posts: 4656
Joined: Sun Jan 15, 2012 12:31 pm

CPU compnent

Post by Olympusman »

My computer repairman gave me some CPUs to try to access. I was able to open them with a heat gun, but could not mind the processor. However, I was able to get some small metal plates out of the package. They were covered with solder, but Nitric Acid dissolved it. One side of the plate is shiny silver and featureless. The other side is gold and appears to have an array of connection points.

Image
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

siliconGary
Posts: 73
Joined: Tue Oct 18, 2016 2:40 pm
Location: Canada
Contact:

Post by siliconGary »

They're not metal plates, that is the silicon die you are looking at! In a modern CPU the die has hundreds of solder ball connections down to a small PCB (Which has 6-10 layers of interconnect) and has the package solder balls on one side (And the die on the other). In your image you can see the top layer of metal (Cu) and about 3 others, a modern intel CPU has about 12 layers of metal above the transistors.

Olympusman
Posts: 4656
Joined: Sun Jan 15, 2012 12:31 pm

CPU

Post by Olympusman »

Gary, so what you are saying, underneath the silver side there is lurking an actual CPU? If so, I'll have to see what I can do to dissolve it.
Thanks

Mike
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

Post Reply Previous topicNext topic