ECOFRECTM TF 49 is a halogen-free, no-clean tacky flux designed for lead-free and leaded applications. After reflow, the residue is clear, colorless, and non-corrosive.
ECOFRECTM TF 49 is a highly recommended material used in POP assembly – Ball Attach Process.
POP assembly or called ball attach is used to combine vertically discrete logic and memory BGA packages to achieve higher component density.
The benefits are saving of PCB space and minimizing track length in between interoperating components.
During assembly, the bottom of the POP stack is directly placed on the PCB, the other package is stacked on top. The connection in between the packages and to the PCB is achieved during reflow soldering.
FEATURES:
Free of halide (Fluoride, Chloride, Bromide) and amine
Noncorrosive residue
Complex blending of rosins, activators, and solvents.
RECOMMENDED APPLICATIONS:
Soldering of spheres
Components rework (BGA, SMT components)
Flip Chip process
Best in class for printing applications
Flux appearance
Light yellow
Solubility in water
not soluble
Solubility in alcohol
soluble
Halogen content
no halogen
Density at 20°C
1
Viscosity (Pa.s at 20°C)
(Brookfield RVT TF at 5 RPM)
