Epoxy fluxes are often used in no-clean SMT component attach applications. The solder bumps on wafer level CSP, micro BGA or BGA packages are dipped in epoxy fluxes, or the flux is applied to the substrate via a jetting process. The assembly is then reflowed, and the epoxy flux acts to both clean up the solder joints before reflow, and to reinforce the final joint from the cured polymer.
Epoxy Flux Blog Posts
Patty had just returned from SMTAI 2015. It was a sentimental meeting with the retirement of longtime executive administrator, JoAnn Stromberg . At one of the technical sessions, Patty was especially interested in epoxy flux being used as an underfill. She couldn’t...
The dipping process is a convenient process to use for the application of Epoxy Flux because most pick and place equipment already have dipping units installed and there is no need for extra equipment or the costs associated with it. However, unless you have more than one dipping unit in...
From One Engineer to Another®
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