Coefficient of Thermal Expansion
CTE
The coefficient of thermal expansion is a material property indicating the relative change in length as temperature changes.
Other learning contexts (4)
In context
Called CTE, it is usually expressed in units such as ppm/K. When silicon, metal, and resin have different values, they cannot expand freely in a bonded structure.
Example
Large thermal expansion of one material alone does not establish a defect. Differences from other bonded materials, temperature range, and structure matter.
Key distinction
CTE is a value of the material itself, while stress results from material differences and constraint conditions together.
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