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Printed circuit board and method thereof and a solder ball land and method thereof

  • US 20090278249A1
  • Filed: 07/13/2009
  • Published: 11/12/2009
  • Est. Priority Date: 08/11/2005
  • Status: Active Grant
First Claim
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1. A printed circuit board (PCB), comprising:

  • a first solder ball land having a first surface treatment portion configured for a first type of resistance; and

    a second solder ball land having a second surface treatment portion configured for a second type of resistance, wherein a surface material of the first solder ball land is different from that of the second solder ball land.

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