Flip-chip products are dark?
Release date: 2017-11-15 Source: External station sharing: 
1. Check the height of the solid crystal thimble and whether the chip protection layer is broken;
2. Whether the solid crystal solder paste is suitable for flip-chip use, the particle size is too large, and the amount of solder paste is more than that when solid crystal is used;
3. Whether the chip has an abnormality of chipping;
4. The chip's own leakage protection is not good;
Label: Flip-chip products are dark?
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