# How to Calculate NTC thermistor β Beta Value?

## i.fb-icon-element.fontawesome-icon.fb-icon-element-1{ color: #ffffff; background-color: #0269e0; border-color: #333333;}i.fb-icon-element.fontawesome-icon.fb-icon-element-1:hover { color: #ffffff; background-color: #0269e0; border-color: #333333;}What Is Beta Value?

Beta Value is an indication of the shape of the curve that represents the relationship between the resistance and the temperature of a particular Thermistor.  Calculate the beta value to achieve the right characteristic at a given temperature vs the resistance for a specific application. it is a vital step in the component selection process.

## What Does Resistance vs. Temperature Mean In Relation To Thermistor Beta Calculations?

It is the characteristic or the curve of  NTC thermistor that best defines the resistance as a function of the temperature.

## How to Calculate Beta?

• NTC thermistor Beta Calculations use a two-point calibration to calculate the resistance vs the temperature curve and take into consideration the required resistance at both temperature points.
• The Beta Value is measured in degrees Kelvin rather than Fahrenheit or Celsius, and it is calculated using the four components listed below.

## Beta Value Calculation Formula

NTC thermistors beta calculation formula

### 4 key Components of NTC thermistor Beta Calculations

1. RT1 = Resistance at Temperature 1
2. RT2 = Resistance at Temperature 2
3. T1 = Temperature 1 (K)
4. T2 = Temperature 2 (K)

Most of AMWEI NTC thermistor Beta B value is calculated from measurements at 25C and 50C, or 25C and 85C,
that is expressed in  B(25/50) , or B(25/85), or the other temperature point the user most concerned.