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NASA/ DoD Vibration Boards

NASA/ DoD Vibration Boards. Nicholas Clore August 8, 2010. pDIP Failure Analysis. Vibrated Boards. Three pDIPs were sectioned out of vibrated boards for SEM inspection. Solder was cracked at various leads, but was not conclusive for daisy chain failure. ( Christian).

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NASA/ DoD Vibration Boards

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  1. NASA/DoD Vibration Boards Nicholas Clore August 8, 2010 pDIP Failure Analysis

  2. Vibrated Boards • Three pDIPs were sectioned out of vibrated boards for SEM inspection. • Solder was cracked at various leads, but was not conclusive for daisy chain failure. (Christian) • Mask lifting was investigated for possible mouse bites in traces SAIC – Vibration Board Component prepared for SEM Nihon Superior – Mechanical Shock Board SAIC – SEM Image of Vibration Board Component

  3. Vibrated Boards • Lifted Mask

  4. Vibrated Boards • Lifted Mask • Possible Pad Cratering • (cracked mask along traces)

  5. Vibrated Boards • Lifted Mask • Solder along mask-less traces • Possible Pad Cratering

  6. Vibrated Boards • Lifted Mask • Solder along mask-less traces • Possible Pad Cratering • Cracked traces

  7. Virgin Boards • Solder along mask-less traces SAIC – USB Microscope, Virgin QFN with repair stencil SAIC – USB Microscope, Virgin pDIP SAIC – USB Microscope, Virgin QFP144

  8. Future Work • X-ray analysis at crane for broken daisy chains • Cross sectioning of pDIPs to investigate pad cratering and “mouse bites.”

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