Ntc 103 Thermistor Temperature Sensor Resistor 10K

Features

103 Thermistor

• Come with broad resistance range
• Thermistor cost is economical
• Provided with lacquer-coated thermistor disk
• Copper leads have coating of tin.
• Having lead spacing of 5.0 mm
• Component remarked with resistance and tolerance
• Good stability, durability in environment
• Provide high accuracy in resistance and B-constant
• Product is not containing lead

Technical Specifications

• Resistance at 25 degrees C: 10K +- 1%
• B-value (material constant) = 3950+- 1%
• Dissipation factor (loss-rate of energy of a mode of oscillation) δ th = (in air)approx.7.5mW/K
• Thermal cooling time constant <= (in air) 20 seconds
• Thermistor temperature range -55 °C to 125 °C

 

Important Parameters

1. Zero-power Resistance of Thermistor: (R)

The convenient reference point for thermistors provided by resistance is at 25 °C (substantially at room temperature).The formula by which the resistance of the thermistor is specified:

R=R0 expB (1/T-1/T0)

Where, R = Resistance in ambient temperature T (K)

R0 = Resistance in ambient temperature T0 (K)

B = Material constant

What is Thermistor 103?

An NTC 103 Thermistor is a type of resistor whose resistance changes significantly with temperature. The “NTC” stands for “Negative Temperature Coefficient”, which means that the resistance decreases as the temperature increases. The number “103” denotes the resistance value of the thermistor at room temperature (25 degrees Celsius), which is 10K Ohms (10,000 Ohms).

Thermistors are commonly used in various electronic devices and systems as temperature sensors or in temperature control circuits. Their applications span from everyday household items, such as thermostats and microwaves, to complex industrial machinery and automotive systems.

 

NTC thermistors are made from a semiconducting material that has been sintered in order to produce a large number of microscopic contact points. This structure gives the thermistor its characteristic temperature-resistance relationship. As the thermistor heats up, more of these contact points open up, allowing current to flow more freely and thus reducing the resistance.

 

It’s important to note that while thermistors can provide a high degree of accuracy and sensitivity in temperature measurements, their non-linear resistance-temperature relationship requires the use of specific formulas or lookup tables to convert the measured resistance to an accurate temperature reading.

 

NTC 103 Thermistor Resistance

As an NTC (Negative Temperature Coefficient) thermistor, its resistance decreases as temperature increases. This change in resistance is not linear but follows a specific curve determined by the material properties of the thermistor.

 

To calculate the resistance at a specific temperature, a Steinhart-Hart equation or B-parameter equation is commonly used. These equations describe the resistance-temperature characteristics of thermistors.

 

B-parameter equation:

R(T) = R0 * exp(B * (1/T – 1/T0))

103 Thermistor