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Solution Driven & Time Saving Circuit Protection Solutions from Ametherm


Thursday, October 22, 2020

Ametherm banner image.

Established in 1994 and headquartered in Carson City, Nevada, Ametherm is the leading manufacturer of inrush current limiter (ICL) thermistors as well as Negative Temperature Coefficient (NTC) thermistors for temperature compensation and control. Globally recognized for their superior thermistor engineering and temperature control solutions, Ametherm is driven to providing their customers with cost effective and time saving solutions.

When looking at Ametherm’s extensive product list, it is important to note that there are two types of thermistors: Positive Temperature Coefficient (PTC) and Negative Temperature Coefficient (NTC). While NTC Thermistors are typically used for temperature sensing purposes, on the contrary PTC Thermistors are used to control the electric current.

Through innovative design and quality practices, Ametherm’s thermistors are applied towards temperature compensation, voltage regulations, circuit protection, time delay, and volume control. In fact, other thermistor applications are widespread in the medical (power supplies, MRI), industrial, automotive (1/3 HP to 3.0 HP range), HVAC., and aerospace industries, making Ametherm thermistors valuable to customers across the globe no matter their solution needs. A further look at some of Ametherm’s most popular products and their applications can be observed below:

Ametherm inrush current protection thermistors.


Manufactured with metal oxide ceramic materials, Ametherm’s SURGE-GARD Inrush Current Limiter devices are designed to suppress high inrush current surges. These inrush current limiters are especially useful in power supplies and in cases when low a low impedance of the charging capacitor exposes the diode bridge rectifier to an incredibly high current stage at turn-on.

Ametherm NTC Disc Thermistors

Thermally sensitive semiconductor resistive devices that decrease in resistance as absolute temperature rises, Ametherm’s NTC Disc Thermistors typically have resistance values that range from 1.0Ω to 500KΩ. With the use of this product, these NTC Thermistors are designed to a large scope of resistance values and temperature coefficients. Ametherm’s NTC Thermistors have a wide range of applications from temperature compensation, temperature measurement, fan motor control, and temperature sensors.


  • Wide Ohmic Value Range
  • Accurate & Stable
  • Fast Thermal Response Time
  • Tight Tolerances
  • High Sensitivity


  • Temperature Compensation
  • Temperature Measurement & Control
  • Fan Motor Control
  • Fluid Level & Temperature Sensors

Ametherm sensing thermistors.

Ametherm’s manufacturing facility processes raw materials that include copper, cobalt, manganese, and nickel into substrate materials that in turn protect amplifiers, AC motors, as well as power suppliers. ISO:9001:2015 certified with a broad range of power thermistors that are UL and CSA approved, Ametherm is able to provide the most reliable yet cost-effective inrush current limiting solutions available. With a promise of short lead times paired with a streamlined manufacturing and international distribution network, Ametherm makes their customer’s job easier time and time again, making them a company you can count on far into the future.

Ametherm product applications.

IBS Electronics is an authorized franchise distributor of Ametherm products. Our team of engineers offer first hand support to guide you to the right component for any application type. Work with industry leading engineers to customize circuit protection devices with The IBS Electronics Group.

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