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New Equipment | Industrial Automation
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Electronics Forum | Tue Mar 23 03:42:51 EDT 2010 | grahamcooper22
Hi, It is very important to follow IPC JEDEC 33 specification for storage and handing of all MSDs. In many instances defects caused by excess moisture in packages is not immediately evident (pcbs may pass final test) but when pcb has been in the fiel
Industry News | 2011-01-31 22:13:54.0
Count On Tools Inc. introduces its new series of Custom SMT Pick-and-Place Nozzles for CREE® XLamp® XM-L LED components. The new series is manufacturer-approved, based on CREE Inc.’s strict requirements and specifications.
Industry News | 2013-10-11 08:17:05.0
Count On Tools Inc. (COT), is pleased to announce that it has been invited to take part in the Cree Solution Provider Program (CSP).
Technical Library | 2014-11-18 23:59:30.0
Performance degradation of packaging material is an important reason for the lifetime reduction of LED. In order to understanding the failure behavior of packaging material, silicone and phosphor were chosen to fabricate LED samples within which an aging test at 125℃ was performed. The result of online luminance measurement showed that LED samples with both silicone and phosphor had the highest luminance decay rate among all test samples because the carbonization of silicone and the consequent outgassing reduced the luminance quickly. The result of the luminance variance with test time was analyzed and an exponential decay model was developed with which the lifetime of LED under high temperature could be estimated.
Technical Library | 2015-07-16 17:24:23.0
Qualification of electronic hardware from a corrosion resistance standpoint has traditionally relied on stressing the hardware in a variety of environments. Before the development of tests based on mixed flowing gas (MFG), hardware was typically exposed to temperature-humidity cycling. In the pre-1980s era, component feature sizes were relatively large. Corrosion, while it did occur, did not in general degrade reliability. There were rare instances of the data center environments releasing corrosive gases and corroding hardware. One that got a lot of publicity was the corrosion by sulfur-bearing gases given off by data center carpeting. More often, corrosion was due to corrosive flux residues left on as-manufactured printed circuit boards (PCBs) that led to ion migration induced electrical shorting. Ion migration induced failures also occurred inside the PCBs due to poor laminate quality and moisture trapped in the laminate layers.
https://www.ascen.ltd/Products/conformal_coating_equipment//580.html PCB Conformal coating machine is used to paint conformal coating onto full LED panel to avoid PCB moisture,sault and static.It can be full panel conformal coating or selective coati
SMTnet Express, November 19, 2014, Subscribers: 23530, Members: Companies: 14112, Users: 37185 Effects of Packaging Materials on the Lifetime of LED Modules Under High Temperature Test Lei Nie, Wenjing Xiang - Hubei University of Technology
| https://www.smtfactory.com/Why-are-LED-lights-popular-8-Advantages-of-LED-When-Compared-To-Traditional-Lighting-Solutions-id44995387.html
. But LED don't need to think so much. 8. LED work well at any temperature: LED work well in very cold or high temperature ranges without appreciable degradation
GPD Global | https://www.gpd-global.com/co_website/pdf/pump/Phosphors-LED.pdf
Phosphors article 22 www.compoundsemiconductor.net July 2014 TECHNOLOGY PHOSPHORS Phosphors: The driving force behind white LEDs Faiz Rahman and Wojciech Jadwisienczak from Ohio University review the progress of phosphors, the key ingredient in the white LED July 2014
