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Differences between C4 pad and BGA pad

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joely2k

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c4 pad

Hi I am confused in some of this technology,
Can any of you all tell me the differences between C4 Pads and BGA pads?

Second question is , what is the differences between pads and bumps? are they the same?

Thanks
 

c4, bga

Pad structure contains all metals ie from bottom to top metals.Bumps are designed using top metal.
Genarally pad structures are used for PBGA type packages bump s are used for FCBGA packages
 

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