U - Index of

QUALITY and RELIABILITY
3.2 ASSEMBLY
The process control and inspection pOints of the assembly operation are explained and listed below:
1. Die Inspection:
Following 100% inspection by manufacturing, in-process Quality Control samples each lot according to internal
or customer specifications and standards.
2. Die Attach Inspection:
Visual inspection of samples is done periodically on a machine/operator basis. Die Attach techniques are monitored
and temperatures are verified.
3. Die Shear Strength:
Following Die Attach, Die Shear Strength testing is performed periodically on a machine/operator basis. Either
manual or automatic die attach is used.
4. Wire Bond Inspection:
DIE ADHESIVE THICKNESS MONITOR RESULTS. (JEOL SEM, JSM IC845)
Visual inspection of samples is complemented by a wire pull test done periodically during each shift. These
checks are also done on a machine/operator basis and XR data is maintained.
5. Pre-Seal/Pre-Encapsulation Inspection:
Following 100% inspection of each lot, samples are taken on a lot acceptance basis and are inspected
according to internal or customer criteria.
WIRE LOOP MONITOR RESULTS.
CROSS SECTION INSPECTION FOR BALL BOND.
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