... the reliability increase as a result of maintaining constant junction temperatures with the active jet impingement scheme. This study examined the construction, characterization, and experimental validation of a variable area nozzle jet impingement cooler. A voice coil motor was used to actuate an optical iris...

...Yutaka Kumano; Tetsuyoshi Ogura; Toru Yamada A novel computational fluid dynamics analysis method of predicting semiconductor junction temperatures precisely without modeling printed circuit board (PCB) line patterns was developed. First, PCBs are divided into multiple regions. The effective...