NTC thermistors are suited to a number of specialized thermometry applications because they are smaller, faster, and more sensitive than almost all other contact thermometers. However, they are very nonlinear and have a narrow temperature range. Traditionally, thermistors have also had a reputation for instability, but thermistors are now readily available for temperature ranges within −40 °C to 60 °C with stabilities of a few tenths of a millikelvin per year. œeir short-term performance approaches that of standard platinum resistance thermometers, but at a much lower cost. œermistors are also available with selected performance characteristics, including interchangeability to 0.05 °C, aged and selected for stability, as well as qualiŸcation for military and space applications.