| | Who is Quality Thermistor? Since 1977, Quality Thermistor, Inc. has designed and manufactured NTC and PTC thermistors of superior quality. From commercial off the shelf thermistor temperature sensors to custom thermistors assemblies and temperature probes, QTI brand temperature sensing products have been specified for mission critical applications from deep below the ocean's surface to the outer reaches of space.
Quality Thermistor's website has been thoughtfully designed to address industry's temperature sensing requirements. Whether searching for an innovative and reliable HVAC & R moisture resistant thermistor probe, or looking to obtain a high-technology surface mount thermistor for a telecommunications application, Quality Thermistor, Inc. has a temperature solution.
While we trust the information provided on this website will assist in the selection of an appropriate thermistor-based temperature sensor, there is no substitute for candid, one on one dialog. We encourage you to contact Quality Thermistor's factory or field representative in your area directly to discuss your specific design, sales or customer service needs.
What are Thermistors? Thermistors (THERMally sensitive resistors), are solid state, electronic devices which detect thermal environmental changes for use in Temperature measurement, control and compensation circuitry. Quality Thermistor, Inc. manufacturers temperature sensors comprised of two basic thermistor technologies:
Negative Temperature Coefficient (NTC) thermistors exhibit a non-linear, decreasing electrical resistance with increasing environmental temperature. Correspondingly, NTC thermistors exhibit a non-linear increasing electrical resistance with decreasing environmental temperature. An NTC thermistors exponential and inverse Resistance / Temperature (R/T) characteristic delivers precise, repeatable thermal sensing with field interchangeable capability.
Positive Temperature Coefficient (PTC) thermistors exhibit a linear, increasing electrical resistance with increasing environmental temperature. Correspondingly, PTC thermistors exhibit a linear, decreasing electrical resistance with decreasing environmental temperature. PTC thermistors linear and proportional change in Resistance / Temperature (R/T) offers simplified and reliable thermal management.
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