Products Fluxes Package-on-Package Flux

Package-on-Package Flux

In package-on-package (PoP) assembly, solder paste is applied to the substrate, and then the logic chip is placed on top. The memory package is dipped into PoP flux or paste, placed on the logic chip, and reflowed, typically using a no-clean process. PoP flux is preferred for easier setup and maintenance, while PoP solder paste, though more challenging due to bridging risks, is better for handling component warpage.

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  • Optimal Viscosity and Rheology
  • High Yields
  • Improved Wettability and Solderability
Two syringes labeled "PoP Flux 89LV-P" and "89LV-B," with pop flux's signature red and black caps, stand upright on a gray background.

No-Clean

Our preferred formulas are developed for no-clean processes with Pb-free solders to help our customers maximize yield.

Airless Packaging

Airless packaging ensures a consistent and reliable assembly process.

Versatile Application Methods

Apply our PoP fluxes by dipping or dispensing methods to meet your application needs.

Excellent Solderability

Our products wet and solder well on various finishes such as Cu-OSP, AuNi, immersion Ag, and more.

Product Data Sheets

PoP Paste Indium 9.88-HF PDS 98501 R8.pdf
PoP Paste Indium 9.88-HF PDS 98501 (A4) R8.pdf
89-LV Package-on-Package Flux PDS 98511 R3.pdf
89-LV Package-on-Package Flux PDS 98511 (A4) R3.pdf

Related Applications

Package-on-Package flux is suitable for the following applications:

Microchips on a printed circuit board

PCB Assembly

Proven and cutting-edge materials for PCB assembly

Close-up of rows of small metallic spheres on a green surface, likely part of an electronic component.

Package-on-Package

Crafted with optimal viscosity, flux technology, and

Related Markets

PoP technology is common across many key markets due to its ability to enhance device performance while saving space.

Do you have technical questions or sales inquiries? Our dedicated team is here to help. “From One Engineer to Another®” isn’t just our motto—it’s our commitment to delivering exceptional service. We’re ready when you are. Let’s connect!

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