Sensing Elements

QTI Sensing Solutions sells a diverse range of thermistors (thermally sensitive resistors). These solid state, electronic devices detect thermal environmental changes in temperature measurement, control and compensation circuitry.

QTI manufactures sensing elements comprised of two basic thermistor technologies: Negative Temperature Coefficient (NTC) and Positive Temperature Coefficient (PTC). For more information, go to the pages listed below:


QTI’s NTC thermistors come in a variety of configurations to meet your needs. Choose between surface mount or leaded parts.


The linear and proportional change in Resistance/Temperature that PTC thermistors display offers simplified and reliable thermal management.

Miniature & Micro

These small thermistors are ideal for several applications from human body temperature measurement to thermal profiling of electronics.


For 30+ years, defense contractors have relied on QTI’s components for their most important applications.


QTI’s platinum, thin film RTD sensors are made with state-of-the-art elements and materials, delivering superior temperature measurement and stability.

To discuss which of our sensing elements will best meet the needs of your business,