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MSL-204TUYL 参数 Datasheet PDF下载

MSL-204TUYL图片预览
型号: MSL-204TUYL
PDF下载: 下载PDF文件 查看货源
内容描述: ALLEDs [ALLEDs]
分类和应用:
文件页数/大小: 9 页 / 97 K
品牌: UOT [ UNITY OPTO TECHNOLOGY ]
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Surface Mount Moisture Sensitivity Specifications  
1. Controlling Moisture  
Unity Opto Technology, in its design of packing materials and packing methods, takes into consideration the susceptibility of  
some Unity packages to moisture induced damage. The risk of this damage is caused when the LED lens plastic encapsulation  
material is exposed to increases or decreases in the Relative Humidity of the surrounding environment.  
Such damage may include delamination between the die and the LED lens plastic encapsulation material, which may result in  
open connections due to broken wire bonds. Moisture in the package having reached a critical level will fracture the package  
in order to escape when exposed to peak temperature conditions, typical in soldering practices.  
Therefore, the control of moisture levels in the LED package is critical to reduce the risk of moisture-induced failures. Please  
follow JEDEC-STD-033A standards for handling moisture sensitive devices.  
2. Packaging SMD devices:  
Unity packages all SMD devices into dry pack bags (moisture barrier bags).  
Unity includes a desiccant pouch in each bag. Testing confirms that the desiccant pouch greatly reduces the presence of  
moisture by maintaining the environment in the bag, thus protecting the devices during shipment and storage.  
3. Handling Dry Packed Parts  
Upon receipt, the bags should be inspected for damage to ensure that the bag’ s integrity has been maintained. Inspection  
should verify that there are no holes, gouges, tears, or punctures of any kind that may expose the contents of the bag.  
To open the bag, simply cut across the top of the bag as close to the original seal as possible being careful not to damage the  
contents. Once open the desired quantity of units should be removed and the bag resealed. If the bag is left open longer than  
2 hours, the desiccant pouch should be replaced with a dry desiccant and the bag should be sealed immediately to avoid  
moisture damage.  
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