8 Negative Temperature Coefficient (NTC) Thermistor Manufacturers in 2023
This section provides an overview for negative temperature coefficient (ntc) thermistors as well as their applications and principles. Also, please take a look at the list of 8 negative temperature coefficient (ntc) thermistor manufacturers and their company rankings. Here are the top-ranked negative temperature coefficient (ntc) thermistor companies as of April, 2023: 1.Resin Tech Inc., 2.Vishay Intertechnology.
Table of Contents
What Is a NTC Thermistor?
A NTC thermistor is electronic components that have the property of decreasing resistance as temperature increases. They are used as temperature sensors by detecting the difference in resistance.
A NTC thermistor is inexpensive because the materials are inexpensive and easy to process, making them the most versatile of all thermistors. Moreover, they are high-precision thermistors because their resistance value changes even with minute temperature changes. They are widely used in familiar home appliances and industrial equipment.
Lead, chip, disk, and thin-film types are available.
Uses of NTC Thermistors
NTC thermistors are widely used as temperature sensors. For example, they are used in smartphones, which are prone to heat buildup. Smartphones use heat-sensitive components and components that lose accuracy due to heat, so it is important to prevent heat buildup. Therefore, it is important to prevent heat buildup. The NTC thermistors detects internal temperature changes and transmits the information to the IC for control.
Other applications include temperature measurement in electronic thermometers, motor protection in vacuum cleaners, and temperature detection in refrigerators.
Principle of NTC Thermistors
NTC thermistors has electrodes attached to semiconductor ceramics sintered from a mixture of manganese, nickel, cobalt, and other oxides. There are N-type and P-type semiconductors depending on the doping substance.
Normally, the rate of movement of free electrons and holes decreases as temperature increases, but in semiconductors, electrons in the valence band receive thermal energy and move to the conductor, and the rate of increase of free electrons and holes in the conductor is greater than that of the free electrons and holes, resulting in lower resistance.
NTC thermistors are suitable for control applications because of the gradual decrease in resistance.
To make NTC thermistors, raw material oxides are first mixed to make a uniform mixture, temporarily baked at 800°C to 1000°C, crushed, and then the grains are enlarged to a size suitable for molding. The material is then formed into its final shape and fired at 1300-1500°C. Finally, electrodes are formed, lead wires are attached depending on the product, and the product is finished with an epoxy resin exterior.
How to Use NTC Thermistors
When considering the design of electronic circuits, the issue of temperature must always be considered. In addition to measuring room temperature, they are also used as temperature protection elements to protect circuits from overheating in order to stabilize circuits and prevent breakdowns.
NTC thermistors (Negative Temperature Coefficient) are a type of thermistor whose resistance value decreases as the temperature rises. They are inexpensive, have the advantage of high sensitivity to temperature, and can be used in a wide range of temperatures, making them a component used for general-purpose temperature detection.
Since thermistors are components that detect changes in temperature by changes in resistance, they are often used in combination with other resistors to divide voltage to obtain an output voltage that depends on temperature changes. The most commonly used circuit configuration is to use a thermistor connected to a constant voltage source via a pull-up or pull-down resistor.
Inrush Current Prevention NTC Thermistors
In electrical and electronic equipment, a large current exceeding the steady-state current value may temporarily flow when the power is turned on. This current is called inrush current. The reason for this inrush current is that equipment with large-capacity smoothing capacitors and decoupling capacitors need to charge these capacitors when power is turned on, which causes a large current to flow at power-on, resulting in inrush current.
Therefore, NTC thermistors are used to suppress inrush currents with instantaneous high peaks at power-on by taking advantage of their high resistance value at low temperatures. As the temperature of the thermistor rises due to current loading, its resistance decreases and power decreases at the same rate.
Since the rise in temperature due to the energization causes the resistance to drop below room temperature, the power loss is reduced compared to when a normal fixed resistor is used. For this reason, NTC thermistors are used as ICLs (Inrush Current Limiters) for circuit protection in electrical and electronic equipment to limit inrush currents easily and effectively.
List of 8 Negative Temperature Coefficient (NTC) Thermistor Manufacturers
*Including some distributors, etc.
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Urbans Aqua Inc.
NTC Temperature Sensor
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Duracell
NTC Thermistor
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Negative Temperature Coefficient (NTC) Thermistor Manufacturer Ranking
*Including some distributors, etc.Ranking as of April 2023 in United States of America
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Resin Tech Inc. | 50% |
| 2 | Vishay Intertechnology | 50% |
Ranking as of April 2023 Globally
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Resin Tech Inc. | 50% |
| 2 | Vishay Intertechnology | 50% |
Derivation Method
The ranking is calculated based on the click share within the negative temperature coefficient (ntc) thermistor page as of April 2023. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
- Murata Manufacturing Co., Ltd.: 77,581
Newly Established Company
- Svel Sensors & Controls Private Limited: 1995 (28 years ago)
- Urbans Aqua Inc.: 1984 (39 years ago)
- Vishay Intertechnology: 1962 (61 years ago)
Company with a History
- Littelfuse: 1927 (96 years ago)
- Duracell: 1940 (83 years ago)
- Murata Manufacturing Co., Ltd.: 1944 (79 years ago)
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