3 results found for bga defect in 5s.
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80% What Will I See - 6/18/01 -

What Will I See BGA defects observed with x-ray inspection fall into catagories. One catagory is the obvious defects; i.e. soledr bridges, missing balls, excessive solder voids. The second catagory is the more subtle "potential" defect. This is where variations in the ball bond x-ray images are observed. Variation in size and variation in shape. These we call signatures. These signature can indicate package deformation (popcorning and potatoe-chipping), incomplete reflow and collapse, cold ...