2015年4月23日星期四

Encapsulation molding compound

With highly integrated IC, the chip and the package size is increased, the shell of the encapsulation layer, and to further reduce the price request for a higher molding and comprehensive requirements, as follows.

1) moldability fluidity, curability, mold release properties, mold contamination habits, metal abrasion resistance, storage stability of the material, and so the appearance of the package.
(2) Heat resistance
(3) Moisture Resistance
(4) corrosion resistance
(5) adhesive
(6) The electrical characteristics under a variety of environmental electrical insulation, high-frequency characteristics, charging and so on.
(7) mechanical properties of tensile and flexural properties (strength and elastic retention of the green temperature), impact strength.
(8) Other printability (ink, laser), flame resistance, soft, elastic, non-toxic and low-toxicity, low cost, color and so on.


From the integrated nature of the substrate, the current IC package with more o-cresol formaldehyde epoxy resin system, but because of the characteristics of epoxy resin, making the temperature resistance, technology, curing conditions, mobility package , shrinkage of the cured product, there are some applications disadvantages. To solve these problems Fu Chen Shanghai Chemical Company has developed a new packaging insulating resin, the resin has good technology to facilitate curing, good liquidity, low cure shrinkage characteristics of epoxy resin has been widely alternatives become the new darling of the industry.

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