1. Dial the hotline of the refrigerant producer to confirm its reliability. 2. Put the refrigerant indoor for 24 hours. Then use a thermometer to measure the external surface temperature of the refrigerant cylinder (figure 1), and connect a pressure gauge to ...
1. Dial the hotline of the refrigerant producer to confirm its reliability. 2. Put the refrigerant indoor for 24 hours. Then use a thermometer to measure the external surface temperature of the refrigerant cylinder (figure 1), and connect a pressure gauge to ...
有的把宽度为7.52mm和10.16mm 的封装分别称为SK-DIP(skinny dual in-line package) 和SL-DIP(slim dual in-line package)窄体型DIP。 但多数情况下并不加区分,只简单地统称为DIP。另外,用低熔点玻璃密封的陶瓷DIP也称为Cerdip(4.2)。 4.1 DIC(dual in-line ceramic package) 陶瓷封装的DIP(含玻璃密封)的别...
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DIP(dual in-line package) 双列直插式封装。插装型封装之一,引脚从封装两侧引出,封装材料有塑料和陶瓷两种。欧洲半导体厂家多用DIL。 DIP 是最普及的插装型封装,应用范围包括标准逻辑IC,存贮器LSI,微机电路等。引脚中心距2.54mm,引脚数从6 到64。封装宽度通常为15.2mm。有的把宽度为7.52mm和10.16mm 的封装分别...
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1. Dial the hotline of the refrigerant producer to confirm its reliability. 2. Put the refrigerant indoor for 24 hours. Then use a thermometer to measure the external surface temperature of the refrigerant cylinder (figure 1), and connect a pressure gauge to ...
1. Dial the hotline of the refrigerant producer to confirm its reliability. 2. Put the refrigerant indoor for 24 hours. Then use a thermometer to measure the external surface temperature of the refrigerant cylinder (figure 1), and connect a pressure gauge to ...