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Bad unit marking method for marking bad units/parts on system carriers for mounting chips uses a non-removable bad unit marking distinguished from the surrounding area by its color
Bad unit marking method for marking bad units/parts on system carriers for mounting chips uses a non-removable bad unit marking distinguished from the surrounding area by its color
A fine ball grid array component (1) has a system carrier (SC) (2) supporting strip conductors (3) that link contact surfaces (4) on the SC with a connector block (5). A lasting, non-removable bad unit marking (6) distinguished from the surrounding area by its color is used for marking bad units/parts on the SC.
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