New Equipment | Soldering - Other
Sunny Company:Beijing Chengliankaida Technology Co.,Ltd Address : SanCang Road Sanjianfang airport ,Tongzhou district , Beijing China Email: salemachines@bjclkdkj.cn Skype :smdsupplier Whatsapp: +86 159 01434496 Wechat: + 86 159 0143 4496
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.
Vacuum Reflow for High-Volume Manufacturing The Pyramax Vacuum reflow oven has been designed with the requirements of large EMS/high-volume automotive customers in mind. The unit is configured with 10 zones of closed-loop convection heating and a ma
Innovative technology for virtually void-free reflow soldering processes. Particularly suited for demanding applications. Whether for power electronics, electronic aviation systems, medical equipment or electronic systems for the automotive industr
New Equipment | Solder Materials
Big-Size Vacuum Soldering Oven for IGBT, MOS 1.Reflow soldering Typically high number of voids cause a large non conductive area 2.Vacuum soldering Very low number of voids, Typically 3.Applications Power Semiconductors;Hybrid
End solder voids with the new Pyramax Vacuum Reflow oven. Featuring easy process transfer and superior thermal profile control as well as full MES integration.
Industry News | 2012-01-26 22:47:26.0
SEHO Systems GmbH announces that Christian Ott will present a paper titled “Reduction of Voids in Solder Joints: An Alternative to Vacuum Soldering” during the Voiding 1: Process and Test Technical Session on Tuesday, February 28, 2012 from 1:30-3 p.m. at the San Diego Convention Center in San Diego, CA. The paper, authored by Rolf Diehm, Mathias Nowottnick and Uwe Pape, will discuss voids in solder joins as one of the main problems for power electronics.
Technical Library | 2020-12-29 20:55:46.0
Voiding in solder joints has been studied extensively, and the effects of many variables compared and contrasted with respect to voiding performance. Solder paste flux, solder powder size, stencil design, circuit board design, via-in-pad design, surface finish, component size, reflow profile, vacuum reflow, nitrogen reflow and other parameters have been varied and voiding quantified for each. The results show some differences in voiding performance with respect to most of these variables but these variables are not independent of each other. Voiding in solder joints is a complex issue that often requires multiple approaches to reduce voiding below required limits. This paper focuses on solutions to voiding for commonly used bottom terminated components (BTCs).
Technical Library | 2020-12-16 18:38:49.0
Fabrication of large structures using out-of-autoclave prepreg materials will lead to a great amount of savings in manufacturing costs. In the out-of-autoclave processing method, the presence of voids inside the laminate has been an issue due to the lack of high pressure during manufacturing. This study aims primarily to observe the moisture absorption response of composite samples containing different levels of void. By changing the vacuum level inside the bag during the manufacturing process, three different unidirectional laminates at three levels of void have been manufactured. After immersing the samples in warm water at 60°C for about one year, the moisture absorption level was monitored and then diffusion coefficients were calculated using Fick's law. Results show that the moisture absorption coefficient changes by %8 within the experimental range of void contents. The mechanical behaviour of these laminates has been studied at four different moisture levels by performing dynamic mechanical analysis (DMA) and short beam shear tests. Empirical results indicate that, in general, interlaminar shear strength and glass transition temperature decrease by moisture build-up inside the samples. DiBenedetto equation is proposed to make a correlation between the moisture content and glass transition temperature.
Industry News | 2021-02-23 15:00:48.0
BTU International, Inc. today announced plans to exhibit at SEMICON China, scheduled to take place March 17-19, 2021 at the Shanghai New International Expo Centre. The PYRAMAX™ Vacuum Reflow Oven will be displayed in the CohPros booth, Hall E7 #7343.
