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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F<strong>in</strong>e Pitch BIB Design RulesProduct P<strong>in</strong>Pitch1.27mm1.00mm0.80mm0.65mm0.50mm0.50mm0.40mmF<strong>in</strong>e Pitch PCB design distancesX-Pitch(mils)5039.431.525.619.719.715.7XYZ – Holesize (mils)332515.7510.2686Z-Via orP<strong>in</strong> hole sizeY – edge to edgedistance (mils)1714.415.7515.413.711.79.7Reduction <strong>in</strong>edge to edgedistance• Y is a critical dimension; closer it is, more susceptible to CAF• Hole/Via determ<strong>in</strong>ed by drill bit size and positional accuracy.Anthony WongHL Kon/Low KW<strong>BiTS</strong> 2003 9