How do we compare thermal conditioning and handling windows when circular reconstituted-wafer warpage causes chucking failures?

Record free and chucked shapes of circular reconstituted wafers before reviewing thermal conditioning, support, transfer and downstream acceptance.

Reconstituted-wafer warpage and handling

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Use supported shape measurements to compare thermal conditioning, chucking and downstream acceptance windows

Check diameter, mold material, die layout and process stage; rectangular panels require their own configuration.
Document faces, center/edge locations and support definitions; a room-temperature bow value does not represent loading shape.
Record support, vacuum, dwell and recovery. If thermal conditioning was performed, also record material temperature limits and oxidation sensitivity; explicitly state when it was not performed. Momentary flatness does not establish a lasting improvement.

Reference sourcesERS electronic：MWAT warpage-adjustment tool for reconstituted wafers ↗

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How do we compare thermal conditioning and handling windows when circular reconstituted-wafer warpage causes chucking failures?

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How do we compare thermal conditioning and handling windows when circular reconstituted-wafer warpage causes chucking failures?

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