Molded Underfill (MUF) Inspection
Molded underfill (MUF) is increasingly being used to lower costs and increase throughput in flip chip assembly. Compared to older underfill processes, MUF decreases material costs, allows for batch processing of both underfill and overmolding in strip format, and enables smaller package size for today’s powerful mobile devices.
The main challenge when inspecting MUF flip chips is that the acoustic signal and its reflections need to penetrate the overmold layer, which is not as transparent to ultrasound as bare silicon. Also, the uneven particle size within the MUF epoxy base causes uneven scattering and absorption of the signal. Sonix MFCI™ software addresses these challenges to improve spatial resolution, edge resolution and contrast in advanced MUF flip chip applications.
|This advanced scanning acoustic microscope features the Sonix Image Enhancement Suite for industry-leading image quality.||Sonix ECHO provides a universal inspection tool for 3D package development, production and failure analysis.|
|Our next-generation solution for high-volume production environments adds fully automated JEDEC tray handling to maximize productivity.|
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