Industry News | 2020-10-14 12:24:38.0
Indium Corporation'sAnson Yu, Technical Manager for Global Accounts in Asia, will present at the LEAP Expo, November 3-5 in Shenzhen, China.
Technical Library | 2014-08-19 15:39:13.0
Understanding warpage of package attach locations on PCBs under reflow temperature conditions is critical in surface mount technology. A new industry standard, IPC 9641, addresses this topic directly for the first time as an international standard.This paper begins by summarizing the sections of the IPC 9641 standard, including, measurement equipment selection, test setup and methodology, and accuracy verification. The paper goes further to discuss practical implementation of the IPC 9641 standards. Key advantages and disadvantages between available warpage measurement methods are highlighted. Choosing the correct measurement technique depends on requirements for warpage resolution, data density, measurement volume, and data correlation. From industry experience, best practice recommendations are made on warpage management of PCB land areas, covering how to setup, run, analyze, and report on local area PCB warpage.The release of IPC 9641 shows that flatness over temperature of the package land area on the PCB is critical to the SMT industry. Furthermore, compatibility of shapes between attaching surfaces in SMT, like a package and PCB, will be critical to product yield and quality in years to come.
Technical Library | 2019-05-01 23:18:27.0
Moisture can accelerate various failure mechanisms in printed circuit board assemblies. Moisture can be initially present in the epoxy glass prepreg, absorbed during the wet processes in printed circuit board manufacturing, or diffuse into the printed circuit board during storage. Moisture can reside in the resin, resin/glass interfaces, and micro-cracks or voids due to defects. Higher reflow temperatures associated with lead-free processing increase the vapor pressure, which can lead to higher amounts of moisture uptake compared to eutectic tin-lead reflow processes. In addition to cohesive or adhesive failures within the printed circuit board that lead to cracking and delamination, moisture can also lead to the creation of low impedance paths due to metal migration, interfacial degradation resulting in conductive filament formation, and changes in dimensional stability. Studies have shown that moisture can also reduce the glass-transition temperature and increase the dielectric constant, leading to a reduction in circuit switching speeds and an increase in propagation delay times. This paper provides an overview of printed circuit board fabrication, followed by a brief discussion of moisture diffusion processes, governing models, and dependent variables. We then present guidelines for printed circuit board handling and storage during various stages of production and fabrication so as to mitigate moisture-induced failures.
Industry News | 2010-03-26 23:54:25.0
The Balver Zinn Group announces that Cobar Europe BV will introduce its new Aquasol Branded Water Soluble solder paste in booth #1876 at the upcoming IPC/APEX conference and exhibition, scheduled to take place April 6-8, 2010 at the Mandalay Bay Resort & Convention Center in Las Vegas.
Birk Manufacturing is one of the leading Kapton® heating manufacturers in the United States. Birk's Kapton® heaters provide even distribution of heat and exhibit exceptionally fast rates of thermal recovery. These Kapton® film heaters are thin and an
The FINEPLACER® lambda is a flexible sub-micron bonder used for precise placement, die attach and advanced packaging. The system offers outstanding flexibility with a modular design and can be easily reconfigured for different applications. The syst
New Equipment | Industrial Automation
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New Equipment | Industrial Automation
Select the right products & services to meet your needs! PLeases contact us Email:unity@mvme.cn Contact: Sandy Lin Email:unity@mvme.cn Skype:onlywnn_1 Telegram:+8618020776786 Mobile(Whatsapp): (+86)-18020776786 QQ :2851195456 Product： Quali
New Equipment | Industrial Automation
Select the right products & services to meet your needs! PLeases contact us Email:unity@mvme.cn Contact: Sandy Lin Email:unity@mvme.cn Skype:onlywnn_1 Telegram:+8618020776786 Mobile(Whatsapp): (+86)-18020776786 QQ :2851195456 Product： Quali
The Dos P016 / 050 / 100 / 300 / TCA piston dispensers are high-precision volumetric dispensers designed to process 1C and 2C materials and cover a wide range of applications. Precisely dimensioned dispensing cylinders provide the ability to obtain r
