I was recently asked to gather some data comparing Indium Corporation’s tabbing fluxes and our largest competitor’s leading tabbing fluxes. Using a new method of solder spread testing found in an upcoming issue of Global Solar Technology, two Indium Corporation tabbing fluxes were directly compared to three of the leading competitor’s fluxes.
The test consists of these simple steps:
- Apply flux to cell
- Dry flux on cell
- Apply solder preforms on cell metallization
- Reflow on a hotplate
- Measure solder length
Finally, the measurements are plugged into the equation:
S = (Lf/Li)100-100
Where: S = Increase in preform length
Lf= Final solder length
Li= Initial length of preform
If you’d like to learn more about the test method or the results, or want help conducting your own evaluation, send me an email at firstname.lastname@example.org.