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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Procedure Cont<strong>in</strong>ued<br />
• PCAs were assembled with sockets and heated to 125ºC for<br />
<strong>in</strong>crements of time up to 1,000 hours to simulate burn-<strong>in</strong><br />
process.<br />
• Periodically the PCAs were removed from the oven to measure<br />
contact resistances and exam<strong>in</strong>e the conductor pads.<br />
• Gold coated boards were cleaned after 1,000 hours burn-<strong>in</strong> by<br />
first swabb<strong>in</strong>g conduct<strong>in</strong>g pads with isopropyl alcohol and then<br />
clean<strong>in</strong>g them <strong>in</strong> a dishwasher with ord<strong>in</strong>arily dishwasher<br />
detergent.<br />
• Contact resistance with contact deflection was evaluated by<br />
stack<strong>in</strong>g.0038” paper shims on top of the mock device and<br />
clos<strong>in</strong>g the cover.<br />
Slide 4
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