Burn-in & Test Socket Workshop - BiTS Workshop
Burn-in & Test Socket Workshop - BiTS Workshop
Burn-in & Test Socket Workshop - BiTS Workshop
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General Observations<br />
Summary of Observations<br />
‣ Contact resistance for Pb and No Pb similar at room<br />
‣ Contact resistance for Au and PdNi similar for Pb and No Pb<br />
‣ Contact resistance for 125% force appears to decrease over<br />
time on Au and PdNi<br />
‣ Ball stick<strong>in</strong>g worse on No Pb than on Pb for 1.0mm and 0.8mm<br />
‣ Ball stick<strong>in</strong>g on 0.5mm with Au worst on Pb (also largest<br />
witness marks)<br />
‣ Ball stick<strong>in</strong>g <strong>in</strong>creases over time at temperature<br />
The Effects of No Lead Solder Balls on <strong>Burn</strong>-<strong>in</strong> <strong>Socket</strong> Design Decisions Page 24
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