Temperature Sensor and Thermistor Products
A thermistor, or thermally sensitive resistor, is a resistor which changes resistance in response to a change in temperature. There are two basic types of thermistors, NTC or Negative Temperature Coefficient and PTC or Positive Temperature Coefficient thermistors. NTC thermistors exhibit a decrease in resistance when temperature rises. PTC thermistors exhibit an increase in resistance when temperature rises. QTI manufacturers both PTC and NTC thermistors in a broad selection of package styles and resistance values.
 IP68 - Waterproof Temperature SensorsQTI’s Hydroguard IP68 Series of parts are designed to offer excellent performance during harsh freeze thaw cycles. Our over molded probes are a great solution where waterproof and moisture resistance is critical. |
 USB Data LoggerQTI combines a precision thermistor with an easy to use USB interface. The DirecTemp probe comes standard with 0.1°C accuracy (0°C to 100°C) and will log real-time temperature sensing information directly to your computer. It will also send an alert when the temperature track exceeds your custom set control limits. NIST traceable calibration certificate available. |
 Miniature Thermistor Temperature SensorsQuality Thermistor, Inc. (QTI) offers a full range of surface mount as well as leaded miniature thermistors. These small thermistors can be used in a variety of applications ranging from body temperature measurement to thermal profiling of electronics. |
Negative Temperature Coefficient (NTC) thermistorsNegative Temperature Coefficient (NTC) thermistors exhibit decreasing electrical resistance with increases in environmental temperature and increasing electrical resistance with decreasing temperature. |
 NTC Thermistor ProbesThermistor probes can be produced in many combinations of thermistor element, probe housing, lead configuration and connector for applications where a surface, air, gas or liquid temperature sensor probe is required. |
 Positive Temperature Coefficient (PTC) thermistorsPositive Temperature Coefficient (PTC) thermistors exhibit increasing electrical resistance with increases in environmental temperature and decreasing electrical resistance with decreasing temperature. |
 Military and Aerospace ProductsAs an AS9100 company, QTI was founded in 1977 to meet the increasing demand for high quality electronic components for the aerospace industry. Since then, QTI has exceeded the requirements of some of the most stringent high cost of failure applications, changing the landscape of the supply chain for the entire industry |
