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Introduction to PPTC Technology
Physical and Electrical Properties of PPTC

At room temperature,the conductive
particles form a 3-dimensional network
between polymeric crystallites to make 
PPTC conductive (low resistance).
At high temperature,the conductive 
particlesˇ¦ network collapses during 
polymeric thermal expansion to make
PPTC insulate (high resistance). 

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