AMETHERM THERMISTORS

Ametherm is the leading manufacturer of inrush current limiter(ICL) thermistors and Negative Temperature Coefficient(NTC) thermistors for temperature compensation and control. Established in 1994 and headquartered in Carson City, Nevada, Ametherm is globally recognized for superior thermistor engineering and temperature control solutions.

Their manufacturing facility processes raw materials such as copper, manganese, cobalt, and nickel into substrate materials that protect AC motors, power supplies, and amplifiers.

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.

Effective Inrush Current Limiting Solutions

There are two types of thermistors: Positive Temperature Coefficient (PTC) and Negative Temperature Coefficient (NTC). The NTC thermistors are mostly used for temperature sensing purposes while PTC thermistors are used to control electric current.

Ametherm’s circuit protection thermistors deliver through innovative design and quality. Thermistors are used in temperature compensation, voltage regulations, circuit protection, time delay, and volume control. Other thermistor applications are prominent in the medical (Power supplies, MRI), industrial, automotive (1/3 HP to 3.0 HP range), HVAC, and aerospace industries. These make Ametherm thermistors highly versatile electronic components.

Ametherm SURGE-GARD

Ametherm SURGE-GARD Inrush Current Limiter devices are manufactured with metal oxide ceramic materials. SURGE-GARD devices are designed to suppress high inrush current surges. These Ametherminrush current limiters are especially useful in power supplies, in instances when low impedance of the charging capacitor exposes the diode bridge rectifier to an excessively high current surge at turn-on.

Ametherm NTC Disc Thermistors

Ametherm NTC Disc Thermistors are thermally sensitive, semiconductor resistive devices that decrease in resistance as absolute temperature increases. Resistance values range from 1.0Ω to 500KΩ. These Ametherm NTC thermistors are suited to a large scope of resistance values and temperature coefficients. Common applications for the Ametherm NTC Disc Thermistors include temperature compensation, temperature measurement, fan motor control, and temperature sensors.

Features:

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

Applications:

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

Applications

Ametherm Inrush Limiting Thermistors(MegaSurge)

The MegaSurge inrush current limiter is useful in:

• AC Motors
• Frequency Generators
• Power Supplies
• Plasma Cutting Tools
• Motor Drives
• MRI Machines
• Audio Amplifiers
• Toroidal Transformers
• Battery Chargers

bigAMP

Ametherm's bigAMP Inrush Current Limiters are specially designed thermistors able to withstand up to 36 amperes of continuous current and 260 joules of input energy.

The bigAMP Inrush Current Limiter is useful in:

• Switching Power Supplies
• AC Motors
• Uninterruptible Power Supplies
• Frequency Generators
• Other equipment that can be improved with inrush current protection

miniAMP

The miniAMP series is designed for applications where board space is limited and cool operation is desired. The cost effective miniAMP inrush current limiter is an efficient way to protect components such as relays, diodes, and fuses from inrush current.

The miniAMP series is available in 3, 5, and 8mm diameters and weigh as little as .06 grams. The miniAMP series cold resistance ranges from 5 ohm to 220 ohm.

Standard

Large variety of the sizes and electrical specifications of the most common inrush current limiters

NTC Thermistors

There are many potential applications for NTC thermistors. Their accuracy and stability make them highly useful for a wide range of purposes. These applications include temperature measurement, compensation, and control.

NTC thermistor probes are generally used as resistance thermometers. They are extremely versatile and accurate, which makes them ideal for a wide variety of applications that measure temperature. Thermistor probes work especially well for lower range of temperatures.

There are many automotive and transportation, and military applications for NTC thermistor probes, including industrial process controls, emissions controls, and differential temperature controls. Thermistor probes can be used in automobile and truck tire curing, as well as for monitoring and controlling engine temperatures. They are even used in missiles and spacecraft.


Some more potential equipment uses of NTC thermistor probes are for plastic laminating and hot glue, as well as fire protection and safety. Copy machines and industrial soldering irons both use NTC thermistor probes. Hot mold and chemical analysis equipment is another potential application for NTC thermistor probes.

Other uses for NTC thermistor probes range from applications for sensor assemblies and industry to telecommunications, as well as many kinds of medical, laboratory, and scientific instruments and testing. They are used in fiber and photographic processing, solar, meteorological, geological, and oceanographic research equipment, as well as consumer and household appliances.

You may well already have NTC thermistor probes being used in your burglar alarm and fire detectors, for your oven, air conditioning, refrigerator temperature control, or fever thermometer. There are more specific applications for NTC thermistor probes that include bathythermography, calorimetry, titration, spectrophotometry, osmometers, bolometry, and thermodilution.

Potential instrumentation applications seem endless as well. NTC thermistor probes can be used for motor winding compensation, transistor temperature compensation, infrared sensing compensation, gain stabilization and piezoelectric temperature compensation.

While the majority of NTC thermistor applications are based on their resistance-temperature characteristic, they can also be grouped according to other basic electrical applications. For example, current-time uses include time delay, surge suppression, and sequential switching. Among the voltage-current uses are vacuum manometers, anemometers, automatic gain, amplitude and level control, flow meter voltage regulation, liquid level control and fluid velocity, alarm volume, signal expansion and compression and thermal conductivity analysis as well switching devices and gas detection.

Ametherm's NTC Thermistor probes can be used for through-hole applications, temperature detection and compensation, as well as circuit protection. There are NTC thermistor probes available to fit nearly any design or desired application. Ametherm's NTC Thermistor probes are all rugged and reliable over a wide temperature range and built using high temperature materials for long life and durability. Ametherm's NTC Thermistor probes are also available in several custom configurations.

Specifications

MegaSurge

MegaSurge Datasheet PDF

bigAMP

Big AMP Datasheet PDF

High Accuracy Thermistors

High Accuracy Datasheet PDF

Products

Characteristics

"Simple Perfection" is the goal of Ametherm's Total Quality Management program, and everyone at Ametherm is encouraged to simplify processes to achieve perfection. Upper management champions quality, and the Quality Manager is on the board of directors of Ametherm.

Thermistors you can trust

Ametherm certify all part numbers that they supply to customers ensuring they are compliant to Reach 174 substances listed as substance of high concern as outlined in Annex IV SUHC of the Reach regulation (EC no 1907/2006) updated 2016. All of part numbers are also ROHS 204/65/EU and ROHS II compliant with exception of 7a. Ametherm both respects and obeys the Dodd-frank law of 3TG by using authorized tin smelters or refiners.

Product List