Ultrasonic test (Scanning Acoustic Tomography), referred to as SAT. It is a non-destructive testing method, widely used in material testing (IQC), failure analysis (FA), quality control (QC), quality assurance and reliability (QA/REL), scientific research and development (R&D) and other fields. It is mainly used to detect the defects such as layering, cracks, layering and voidness of electronic components, LED and metal substrate, and distinguish the difference of acoustic impedance inside the material through the contrast of ultrasonic scanning images, determine the shape and size of the defect, and determine the orientation of the defect.

Note: Ultrasonic testing is non-destructive and non-destructive testing of the internal packaging condition of the sample, and there is no special requirement for the sample during testing, and the sample surface can be tested flat.

Sample DS90UB940TNKDRQ1 detection exception example: