How to Achieve Comprehensive Inline IC Structural Screening

+ Electrical Structural Tester

Inline Structural Screening

Inline IC structural screening evaluates every semiconductor package during manufacturing by measuring electrical characteristics that reveal structural abnormalities before final functional testing. The approach complements conventional automated test equipment and automated x-ray inspection by identifying defects that cannot be detected through open-short testing or limited sampling inspection.

The measurement process applies capacitive sensing techniques to analyze coupling between internal conductive structures such as lead frames and wire bonds. Statistical profile analysis compares each device against production baselines, allowing structural abnormalities to be detected automatically while maintaining continuous inspection across high-volume manufacturing lines.

Inline Structural Screening Solution

Achieving comprehensive inline IC structural screening requires integrating a high-speed electrical inspection system directly into the semiconductor production flow without slowing manufacturing throughput. The solution combines the Keysight electrical structural tester with capacitive vectorless test enhanced probe technology to inspect internal package structures immediately after automated test equipment testing. The system detects structural defects including wire sag, near shorts, incorrect die placement, and abnormal package construction that may not be identified through conventional electrical or x-ray inspection alone. Built-in part average test analysis continuously monitors production variations and dynamically updates screening limits to reduce false rejects. Supporting up to 20 parallel test sites and throughput reaching 72,000 units per hour, the solution enables full inline inspection for high-volume automotive semiconductor manufacturing while reducing escape defects and improving product quality.

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