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Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Sample preparation

Views: 1225

#75526

Sample preparation | 12 April, 2016

Hello, I did drop testing of some sample boards which had 15mm SAC105&305 BGA's on them. I polished them real nice and looked it under optical microscope for cracks. Was wondering the etching procedure before looking it under SEM.

Thanks

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#75527

Sample preparation | 12 April, 2016

IPC-TM-650 Test Methods Manual, 2.1.1 Subject Microsectioning, Manual and Semi or Automatic Method [ https://www.ipc.org/TM/2-1-01F.pdf ]

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#75529

Sample preparation | 12 April, 2016

Thanks, any tips on what I have to be looking for near the IMC layer?

Thanks again!

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#75538

Sample preparation | 13 April, 2016

Formation and Growth of Intermetallics at the Interface Between Lead-free Solders and Copper Substrates [ http://www.boulder.nist.gov/div853/Publication%20files/NIST_Apex94_Siewert.pdf ]

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