++ ATOT official NEF thread part IV ++

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rudeguy

Lifer
Dec 27, 2001
47,371
14
61
I don't even know what ball size means.
its a BGA chip. So instead of pins, it has nubs. There are no slots for the nubs to go into, they sit on pads. The nubs attach to the pads via solder balls. The solder balls are very small and getting the size right is crucial.

I think.
 

sdifox

No Lifer
Sep 30, 2005
90,632
12,421
126
its a BGA chip. So instead of pins, it has nubs. There are no slots for the nubs to go into, they sit on pads. The nubs attach to the pads via solder balls. The solder balls are very small and getting the size right is crucial.

I think.
isn't it just a matter of heat and even pressing?
 

Broheim

Diamond Member
Feb 17, 2011
4,592
2
81
its a BGA chip. So instead of pins, it has nubs. There are no slots for the nubs to go into, they sit on pads. The nubs attach to the pads via solder balls. The solder balls are very small and getting the size right is crucial.

I think.
I'd think you're right about them having a standard size, it would make the most sense (though that has not stopped people in the past).
 

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