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MacDermid Alpha to Launch ALPHA HiTechHigh Tg, Low CTEUnderfill and CornerfillBonding Materials

Jan 17, 2021

The Assembly Division of MacDermid Alpha Electronics Solutions announces the release of ALPHA HiTechUnderfills and Cornerfills with high Transition Glass Temperature (Tg), Low Coefficient Thermal Expansion (CTE), and excellent thermal cycling (TCT) performance. The attributes provide formulation flexibility to enhance product performance in various applications. 

Both ALPHA HiTech CU21-3240 and ALPHA HiTechCU31-2030are one-component capillary underfills which are designed for the protection of assembled chip packages onto printed circuit boards,providing excellent reliability performance. ALPHA HiTech CU21-3240exhibits good thermal cycling performance due to its low coefficient of thermal expansion. It is suitable for applications with high reliability requirements such as automotive. ALPHA HiTech CU31-2030 is a low viscosity underfill which enables fast and efficient flow properties.It is suitable for assembling BGA, CSP and Flip Chip devices and is also suitable for rework.

ALPHA HiTech CF31-4010 is a one component, high filler content, heat curable cornerfill. It is an epoxy-based material to be dispensed on the corner (corner bonding) or edges (edge bonding) of BGA devices. Upon completion of the curing process, the cured cornerfill helps to strengthen the soldered assembled component allowing it to pass reliability tests such as Drop Shock, Impact Bend and Thermal Cycle (TCT).The product is also reworkable.

For more information on the new ALPHA UnderfillsandALPHA Cornerfill, please visitMacDermidAlpha.com


Through the innovation of specialty chemicals and materials under our Alpha, Compugraphics, Kester and MacDermid Enthone brands, we provide solutions that power electronics interconnection.  We serve all global regions and every step of device manufacturing within each segment of the electronics supply chain. The experts in our Semiconductor Solutions, Circuitry Solutions, and Assembly Solutions divisions collaborate in design, implementation, and technical service to ensure success for our partner clients.  Our solutions enable our customers’ manufacture of extraordinary electronic devices at high productivity and reduced cycle time. Find out more at MacDermidAlpha.com.

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