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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
 

Pramod

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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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