Reasonable resistor pastes with low TCR using Constantan

Abstract

Fraunhofer IKTS presents first results of thick-film Constantan pastes as an attractive alternative for resistor and heater applications. We report on influencing the sheet resistance of screen-printed Constantan pastes by variation of paste composition and constitution, as well as architectural conditions. It is shown, how to adjust sheet resistance of Constantan pastes over a range of multiple orders of magnitude. Investigations of the structure of the fired pastes reveal a change of composition of the annealed pastes. Experiments using a new adapted glass promise suppression of those changes.