Industry Directory | Manufacturer
DriSteem provides reliable and efficient humidity control, evaporative cooling, and water treatment solutions for commercial and industrial applications.
Industry Directory | Consultant / Service Provider
Pristine Engineers & Technology a supplier , trading, and service provider in Delhi NCR for water treatment plants inclusive of water softening system , Demineralization plant, commercial RO plant , water treatment chemicals ,
New Equipment | Solder Materials
Pentaerythritol Ester of Polymerized Rosin | Penta Rosinate Pentaerythrityl Modified Rosinate, is the product of esterification of modified rosin with pentaerythrite, which have higher softing point than PERE. 100F Acid Value: 25mg KOH/g max
New Equipment | Solder Paste Mixers
Mixes and softens solder paste in original containers. Improves printing consistency, print quality, and saves time! Reduces oxidation and prevents the potential introduction of foreign matter and water vapor into the paste. Equipped with easy to
Electronics Forum | Tue Apr 15 10:43:44 EDT 2003 | yngwie
Why is it people still prefer to do manual stirring of solder paste versus automated solder paste softener ? I learned that one of the dis-advantage of using the softener is that this method is actually seperating the metal and flux. Is there any oth
Electronics Forum | Fri Apr 18 19:27:29 EDT 2003 | yngwie
Under web search you type solder paste softener. It is meant to replace manual stiring process of solder paste prior use. I heard that the spinner/softener is no use as it will seperate the flux and metal content during the spinning process. But, I h
Used SMT Equipment | Screen Printers
MPM AP25 Screen Printer Dimensions: 70" x 64" x 60" [AP25] Dimensions: 22" x 22" x 25" [SPS_5] Serial: 6913 Features: Includes Malcolm Solder Paste Softener
Industry News | 2019-02-25 14:34:40.0
Seika Machinery is pleased to introduce the new SPS-10 Solder Paste Softener from MALCOM.
Parts & Supplies | Solder Paste Mixers
Solder Paste chambrieren machine,solder Paste softening machine Description: Brand name:solder Paste chambrieren machine Type:4 slot Material:Hot steel spraying Power supply:220V(50Hz) Power:0.4Mpa Original:Shenzhen Weight:20KG Advantage:
Technical Library | 2018-08-29 21:17:53.0
No-clean solder pastes are widely used in a number of applications that are exposed to wide variations in temperature during the life of the assembled electronics device. Some have observed that cracks can and do form in flux residue and have postulated that this is the result of or exacerbated by temperature cycling. Furthermore, the potential exists for the flux residue to soften or liquefy at elevated temperatures, and even flow if orientated parallel to gravity. In situations such as in automotive electronics, where significant temperature cycling is a reality and high reliability is a must, concern sometimes exists that the cracking and possible softening or liquefying of the residue may have a deleterious effect on the electrical reliability of the flux residue. This paper will attempt to address this concern.
Technical Library | 2015-02-12 16:57:56.0
Electronic systems are known to be affected by the environmental and mechanical conditions, such as humidity, temperature, thermal shocks and vibration. These adverse environmental operating conditions, with time, could degrade the mechanical efficiency of the system and might lead to catastrophic failures.The aim of this study is to investigate the mechanical integrity of lead-free ball grid array (BGA) solder joints subjected to isothermal ageing at 150°C for up to 1000 hours. Upon ageing at 150°C the Sn-3.5Ag solder alloy initially age-softened for up to 200 hours. This behaviour was linked to the coarsening of grains. When aged beyond 200 hours the shear strength was found to increase up to 400 hours. This age-hardening was correlated with precipitation of hard Ag3Sn particles in Sn matrix. Further ageing resulted in gradual decrease in shear strength. This can be explained as the combined effect of precipitation coarsening and growth of intermetallic layer. The fractured surfaces of the broken solder balls were also investigated under a Scanning Electron Microscope. The shear failures were generally due to ductile fractures in bulk solders irrespective of the ageing time.
QXJ-NC32 SMT pick and place nozzle cleaning machine In the field of the semiconductor industry today, with the development of SMT, small parts into small, high-density mounting and base for reality, and future development trends will be further co
HD footage of the Technical Devices Company's Flood Box in operation on a Nu/Clean 800 Series Inline Cleaner
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