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Indium Corporation Introduces New Ball-Attach Flux

September 8, 2020

Indium Corporation has released a new ball-attach flux, WS-829, designed for printing and pin transfer applications for the smallest sphere and high-density applications, including LED die-attach.

WS-829 is a water-soluble, halogen-free flux that can be used for ball-attach on substrate in a standard ball-grid array (BGA) manufacturing process (especially for the smallest sphere applications < 0.25mm) as well as wafer-/panel-level packaging (WLP/PLP).

WS-829 features:

  • Best-in-class flux residue cleanability when using only DI water; it also effectively cleans off contamination or pad oxidation from processes before ball mount
  • High tackiness, which holds event the smallest solder spheres and LED die in place, and reduces missing balls or die skew defects
  • A formulation that ensures consistent flux definition over long periods of time with minimal slump

Indium Corporation offers a robust portfolio of flux products designed for new or emerging industry challenges. To learn more about Indium Corporation’s fluxes, visit www.indium.com/ball-attach.

Indium Corporation is a premier materials refiner, smelter, manufacturer, and supplier to the global electronics, semiconductor, thin-film, and thermal management markets. Products include solders and fluxes; brazes; thermal interface materials; sputtering targets; indium, gallium, germanium, and tin metals and inorganic compounds; and NanoFoil®. Founded in 1934, the company has global technical support and factories located in China, India, Malaysia, Singapore, South Korea, the United Kingdom, and the USA.

For more information about Indium Corporation, visit www.indium.com or email jhuang@indium.com. You can also follow our experts, From One Engineer To Another® (#FOETA), at www.facebook.com/indium or @IndiumCorp.       

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