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Indium Corporation Introduces New Ball-Attach Flux
May 25, 2021 | Indium CorporationEstimated reading time: Less than a minute
Indium Corporation continues to expand its flux portfolio with WS-823—a proven, one-step ball grid array (BGA) ball-attach flux designed to eliminate the costly and warpage-inducing prefluxing step, especially on Cu-OSP substrate.
SA-Dip%20flux.jpgWhile the standard ball-attach process requires two steps, especially on a Cu-OSP substrate, WS-823 is a halogen-free, water-wash flux designed for a single-step ball-attach process that eliminates the prefluxing step in order to create reliable ball-to-pad joints.
WS-823 provides:
- Tackiness suitable for holding solder spheres in place during reflow
- Excellent solderability on a wide range of surfaces, including AuNi and oxidized Cu-OSP
- Uniform pin transfer over extended periods, eliminating changes in joint quality over time and uneven deposit sizes, which can lead to “missing ball”
- A formula engineered for low-voiding, thereby increasing joint strength
- Good cleanability with room temperature DI water, avoiding the formation of white residue
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