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型號： 7001020

類別： 集成電路

描述： The 7001020 is a transparent Dry-shield Moisture Barrier Bag works by enclosing a device with metal or plastic shields that has a high resistance to moisture vapour permeation. Dry device is placed inside this shield and the moisture-laden air is evacuated. Desiccant filled pouches scavenge the remaining moisture from the bag interior. Moisture that penetrates the bag is also entrapped by the desiccant. Humidity indicating cards report the effectiveness of the package upon device use. A label on the bag indicates the amount of exposure time device is allowed prior to use and the drying (re-baking) time and temperature if the exposure time is exceeded. . Bag with lower MVTR provide better barrier . Sharp tray edges may tear through bags with low puncture resistance . Width is measured from inside seam to inside seam . Length is measured from the top edge to the bottom fold . Aluminium foil provides the best MVTR of about 0.0003 . Multiple layers of aluminized polyester can provide 0.02 to about 0.005

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