Omega Engineering, Inc. delivers thermistors, thermistor probes, thermistor elements and thermistor sensors. Product line includes quick disconnect thermistor probes, general purpose thermistor probes, wall mount thermistor sensors, thermistor elements with lead wires, surface measurement thermistor elements, and precision and specialized thermistor probes.

Quality Thermistor, Inc. (QTI) manufactures both Positive Temperature Coefficient (PTC) thermistors, Negative Temperature Coefficient (NTC) thermistors, surface mount thermistors, leaded miniature thermistors, and military and space thermistors as well as NTC thermistor probes.

Measurement Specialites offers high precision NTC thermistors, temperature probe assemblies and thermophiles including leaded thermistors and space qualified thermistors. Leaded thermistors include a range fo epoxy coated discretes, glass encapsulated thermistor components and polymide and mylar thermistor components.

AMWEI Thermistor is a manufacturer of PTC and NTC thermistors. Models of PTC thermistors include PTC heater/PTC liquid heater/PTC air heater, linear PTC thermistor/silicon temperature sensor, overcurrent protection in Telecom, switching lighting application, overload and over-current protection, temperature sensing protection, PTC motor starter, and degaussing circuit. Models of NTC thermistors include leaded/epoxy temperature measurement, axial glass package/high temperature measurement, inrush current limiter power thermistor, temperature measurement/compensation, temperature compensation/sensing/SMD type, temperature sensor probe assemblies, radial glass package/high temperature sensing, and epoxy/radial leaded/medical sensor.