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(a) If the chip temperature may not exceed 80°C at any point on its surface, what is the maximum allowable power, in W? 9max.a = i W (b) What is the maximum allowable power, in W, if the chip is flush mounted in a substrate that provides for an unheated starting length of 22.5 mm? 9max.b = i W

(a) If the chip temperature may not exceed 80°C at any point on its surface, what is the maximum allowable power, in W? 9max.a = i W (b) What is the maximum allowable power, in W, if the chip is flush mounted in a substrate that provides for an unheated starting length of 22.5 mm? 9max.b = i W

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A square (12.5 mm × 12.5 mm) silicon chip is insulated on one side and cooled on the opposite side by atmospheric air in parallel flow at U = 20 m/s and To 24°C. When in use, electrical power dissipation within the chip maintains a uniform heat flux at the cooled surface. Assume the critical Reynolds number is 5x105. (a) If the chip temperature may not exceed 80°C at any point on its surface, what is the maximum allowable power, in W? W 9max,a = = (b) What is the maximum allowable power, in W, if the chip is flush mounted in a substrate that provides for an unheated starting length of 22.5 mm? 9max,b Physical Properties Mathematical Functions = W
Transcribed Image Text:A square (12.5 mm × 12.5 mm) silicon chip is insulated on one side and cooled on the opposite side by atmospheric air in parallel flow at U = 20 m/s and To 24°C. When in use, electrical power dissipation within the chip maintains a uniform heat flux at the cooled surface. Assume the critical Reynolds number is 5x105. (a) If the chip temperature may not exceed 80°C at any point on its surface, what is the maximum allowable power, in W? W 9max,a = = (b) What is the maximum allowable power, in W, if the chip is flush mounted in a substrate that provides for an unheated starting length of 22.5 mm? 9max,b Physical Properties Mathematical Functions = W
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