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IPX8AM Datasheet(PDF) 2 Page - AVAGO TECHNOLOGIES LIMITED |
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IPX8AM Datasheet(HTML) 2 Page - AVAGO TECHNOLOGIES LIMITED |
2 / 2 page For product information and a complete list of distributors, please go to our web site: www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries. Data subject to change. Copyright © 2005-2010 Avago Technologies. All rights reserved. AV02-2678EN - November 4, 2010 3.2 Description of IP code against ingress of water (second characteristic numeral) IP code Description for degree of protection IPX 0 Non-protected IPX 1 Protected against vertically falling water drops IPX 2 Protected against vertically falling water drops when enclosure tilted up to 15° IPX 3 Protected against spraying water IPX 4 Protected against splashing water IPX 5 Protected against water jets IPX 6 Protected against powerful water jets IPX 7 Protected against the effects of temporary immersion in water IPX 8 Protected against the effects of continuous immersion in water 4. Benefits of IPX6-rated LED packages Common surface mount LED packages, especially those with silicone encapsulation, require additional protection commonly in the form of a transparent cover on top of the LED or LED panel to shield off direct water exposure. The cover also acts as a protection against dust accumula- tion on the silicone surface. Prolonged exposure to water without protection on such LED packages might lead to premature LED failures. In contrast, Avago’s IPX6-rated surface mount LED packages are capable of withstanding direct exposed to the outdoor environment where rainfall, condensation, mist or water splashes can come in direct contact with the LED surface. Moreover, sign and display makers can now design their products without a transparent plastic cover when using Avago’s LED with IPX6 rating. This directly reduces the material and assembly costs of the end product as well as eliminating the unwanted reflec- tion from the plastic cover. 5. Cleaning Surface mount LED packages with silicone encapsula- tion generally attract dust and dirt due to their surface tackiness. To clean the LED surface when this happens, water can be sprayed directly on the LED panel, as these LED packages are IPX6 rated. It is recommended that the water pressure be kept below 30kPa to avoid exerting too much pressure on the LED surface. 6. Precautions Avago surface mount LED packages have metal leads pro- truding from the polymer body. These leads act as electrical terminalstothepackageandaremeanttobesolderedontoa printed circuit board. Although packages that are IPX6 rated are protected against powerful water jets, it is necessary to protect the leads and the solder joints from being exposed to the environment. If left unprotected, such exposure may lead to corrosion, shorts, leakage or breakdowns. After having been in contact with water, small globules of watermightremainontheLEDsurface.Thesesmallglobules, acting just like lenses, might slightly affect the optical per- formance of the LED package. However, the effect is not permanent and will disappear as the water dries off. Although these IPX6-rated LED packages are protected against exposure to water, the soft silicone encapsulation is stillsusceptibletoexternalmechanicalstresswhichmaylead to unwanted catastrophic failure. It is therefore necessary to observe appropriate precautions as listed in Avago applica- tion note AN 5288 when handling these devices. Electronic grade potting material Printed circuit board Avago’s IPX6 rated LED Outdoor environment |
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