Technical Library | 2021-12-06 03:43:31.0
By potting under vacuum, components can be optimally protected from external influences. Before the potting process, air and moisture are removed from the components by vacuum. Components with geometries that are difficult to vent, coils, transformers or wound goods can be potting free of air bubbles. Potting under vacuum guarantees an even distribution of the potting material.Whatsapp 0086 134 2516 4065
Technical Library | 2023-01-17 17:16:43.0
A test program was developed to evaluate the effectiveness of vacuum reflow processing on solder joint voiding and subsequent thermal cycling performance. Area array package test vehicles were assembled using conventional reflow processing and a solder paste that generated substantial void content in the solder joints. Half of the population of test vehicles then were re-processed (reflowed) using vacuum reflow. Transmission x-ray inspection showed a significant reduction in solder voiding after vacuum processing. The solder attachment reliability of the conventional and vacuum reflowed test vehicles was characterized and compared using two different accelerated thermal cycling profiles. The thermal cycling results are discussed in terms of the general impact of voiding on solder thermal fatigue reliability, results from the open literature, and the evolving industry standards for solder voiding. Recommendations are made for further work based on other void reduction methods and additional reliability studies.
Technical Library | 2012-06-01 00:08:44.0
Recession survival tips on how and why not to cut training. ... About the methods for US Manufacturing Industry to adjust for the knowledge vacuum caused by retiring baby boomers with training, while dealing with tight training budgets during a recessio
Technical Library | 2012-09-13 20:45:17.0
First published in the 2012 IPC APEX EXPO technical conference proceedings. Prior to committing production boards to vapor phase soldering, we performed an evaluation to assess reliability and evaluate the vacuum soldering option. The reliability of vapor
Technical Library | 2018-06-04 13:52:05.0
Potting in a vacuum or atmospheric conditions? This question about the correct procedure concerns many users, among others i.e. electronics manufacturers, who pot more and more complex parts and components for a huge variety of products. Against the actual requirements of product and process, a decision on the procedure is often made under the assumption: „Potting under atmosphere = affordable and easy" and „Potting under vacuum = expensive and difficult". But that's a thing of the past. The way to the correct method, however, requires the clarification of a number of factors.
Technical Library | 2021-04-21 15:10:16.0
Voids affect the thermal characteristics and mechanical properties of a solder joint, thereby affecting the reliability of the solder interconnect. The automotive sector in particular is requiring the mitigation of solder voids in various electronic control modules to the minimum possible level. Earlier research efforts performed to decrease voids involved varying the reflow profile, paste deposit, paste alloy composition, stencil aperture, and thickness. Due to the various advantages they offer, the use of Ball Grid Array packages is common across all industry sectors. They are also prone to process voiding issues. This study was performed to determine if vacuum assisted reflow process can help alleviate the voids in area array solder joints. Test parameters in this study largely focused on vacuum pressure level and vacuum dwell time.
Technical Library | 2022-10-31 18:35:40.0
Voids affect the thermal characteristics and mechanical properties of a solder joint, thereby affecting the reliability of the solder interconnect. The automotive sector in particular is requiring the mitigation of solder voids in various electronic control modules to the minimum possible level. Earlier research efforts performed to decrease voids involved varying the reflow profile, paste deposit, paste alloy composition, stencil aperture, and thickness. Due to the various advantages they offer, the use of Ball Grid Array packages is common across all industry sectors. They are also prone to process voiding issues. This study was performed to determine if vacuum assisted reflow process can help alleviate the voids in area array solder joints. Test parameters in this study largely focused on vacuum pressure level and vacuum dwell time.
Technical Library | 2021-12-31 06:55:24.0
Any air entrapment in the potting compound can result in air bubbles that may cause performance problems in the finished component. Potting under vacuum is therefore frequently required to prevent air entrapment, especially with the increasingly small and complex assemblies required in today's electronics
Technical Library | 2021-12-31 06:56:02.0
Any air entrapment in the potting compound can result in air bubbles that may cause performance problems in the finished component. Potting under vacuum is therefore frequently required to prevent air entrapment, especially with the increasingly small and complex assemblies required in today's electronics
Technical Library | 2021-08-11 00:52:35.0
Formulators of multi-component adhesives, potting and encapsulation materials are careful not to supply products with entrapped air. They do this by manufacturing under vacuum or degassing them before supplying to the end user. Consequently, entrapped air in a mixed material is usually a processing issue.
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