TT electronics IRC Advanced Film Division has developed a video about their patented precision thin film resistor technology.  (Click here to watch Nichrome disolve and here to see what happens to TaNFilm) TaNFilm, the thin film process relies on self-passivating properties of tantalum nitride to produce a more stable, reliable resistive device as compared to nickel-chrome (nichrome) elements used in conventional resistors. The process also enables custom circuit configurations and multiple resistance values without compromising tight tolerance or tracking characteristics.
TT electronics IRC Advanced Film Division