サーミスタの抵抗範囲と用途

サーミスタの抵抗範囲は広い, NTC サーミスタの抵抗は数十オームから 10,000 オームの範囲にあります, 特殊なデバイスもニーズに応じてカスタマイズできます. 一般的に使用される抵抗値は2.5Ωです, 5おお, 10おお, 100おお, 等, 一般的な抵抗誤差は±15%です, ±20%, ±30%, 等. PTC サーミスタの抵抗範囲は通常 1KΩ から数百 KΩ です。.

NTCサーミスタ 2.5Ω, 5おお, 10おお, 100おお & 3950, 3435

5K B value 3270 1% Freezer temperature sensor probe

NTC temperature sensor 10K B3950 M4 surface mount

Thermistors are a special electronic component whose resistance value changes with temperature. According to the different temperature coefficients, thermistors are mainly divided into two categories: negative temperature coefficient thermistors (NTC) and positive temperature coefficient thermistors (PTC).

Resistance range and application of NTC thermistors
The resistance range of NTC thermistors is quite wide, ranging from tens of ohms to ten thousand ohms. In practical applications, we often encounter resistance values ​​of 2.5Ω, 5おお, 10おお, 等. These resistance values ​​are not fixed, and they will show a certain regularity with temperature changes. 具体的には, when the temperature rises, the resistance of the NTC thermistor will decrease; 逆に, when the temperature decreases, the resistance will increase. This characteristic makes NTC thermistors widely used in the field of temperature measurement and control.

加えて, the resistance error of the NTC thermistor is also an important parameter that we need to pay attention to. Common resistance errors are ±15%, ±20%, ±30%, 等, which means that in practical applications, we need to select a suitable resistance error range according to specific needs to ensure the accuracy of measurement and control.

Resistance range and application of PTC thermistors
The resistance range of PTC thermistors is usually from 1KΩ to several hundred KΩ. Its resistance increases when the temperature rises, and it has high sensitivity and stability. PTC thermistors are often used in overcurrent, overvoltage protection and temperature sensors.

The difference between nominal resistance and actual resistance
When understanding the resistance range of thermistors, we also need to distinguish two concepts: nominal resistance and actual resistance. The nominal resistance usually refers to the resistance of the thermistor when the ambient temperature is 25°C, while the actual resistance is the resistance measured under certain temperature conditions. Due to factors such as changes in ambient temperature and aging of the component itself, the actual resistance may deviate from the nominal resistance. したがって, in practical applications, we need to select and adjust according to the specific situation.

要するに, as an important electronic component, thermistors are widely used in various fields. By understanding their resistance range and change rules, we can better select and use thermistors to meet the needs of different scenarios.