NTC thermistor refers to a thermistor with a negative temperature coefficient. Is the use of a single high-purity materials, with close to the theoretical density of high-performance ceramic structure. In the realization of miniaturization at the same time, with a resistance value, the temperature characteristics of small fluctuations, a variety of changes in temperature characteristics of the fast, high sensitivity, high precision detection. Guangdong South Hongming provide a variety of shapes, characteristics of small, high reliability products, to meet the needs of our customers.
NTC Negative Temperature Coefficient Thermistor Working Principle
NTC is the abbreviation of Negative Temperature Coefficient, meaning negative temperature coefficient, refers to the negative temperature coefficient of semiconductor materials or components, the so-called NTC thermistor is a negative temperature coefficient thermistor. It is based on manganese, cobalt, nickel and copper and other metal oxides as the main raw material, made of ceramic technology. These metal oxides are of a semiconductor nature because they are completely similar in conductivity to germanium, silicon and other semiconductor materials. When the temperature is low, the number of carriers of these oxide materials is reduced, so that the resistance value is high and the number of carriers is increased, so that the resistance value is lowered.
The following are the same as the "
NTC negative temperature coefficient thermistor composition
NTC (Negative Temperature Coefficient) refers to the temperature rise with the resistance index is reduced, with a negative temperature coefficient of thermistor phenomena and materials. The material is made of manganese, copper, silicon, cobalt, iron, nickel, zinc and other two or more metal oxides for the full mixing, molding, sintering and other processes made of semiconductor ceramics can be made with a negative temperature coefficient (NTC) thermistor. The resistivity and material constant vary with the material composition ratio, sintering atmosphere, sintering temperature and structure state. There is also a non-oxidant NTC thermistor material represented by silicon carbide, selenium tin oxide, tantalum nitride, and the like.
NTC thermal semiconductors are mostly spinel structure or other structures with a negative temperature coefficient, the resistance value can be approximated as: RT, RT0 were temperature T, T0 when the resistance value, Bn for the material constant. The ceramic grain itself changes due to the temperature change, which is determined by the semiconductor properties. The rated zero power resistance value is the resistance value R25 measured by the NTC thermistor at the reference temperature of 25 ° C, which is the nominal resistance of the NTC thermistor. Generally speaking, how much resistance NTC thermistor, also refers to the value.
NTC Negative Temperature Coefficient Thermistor Main Parameters
Zero power resistance value RT (Ω)
RT refers to the resistance value measured by the measured power when the resistance value is changed relative to the total measurement error at the specified temperature T.
The relationship between the resistance value and the temperature change is:
RT = RN expB (1 / T - 1 / TN)
RT: NTC thermistor resistance at temperature T (K).
RN: NTC thermistor resistance at rated temperature TN (K).
T: Specified temperature (K).
B: NTC thermistor material constant, also known as thermal index.
Exp: exponent of the natural number e (e = 2.71828 ...).
The relational expression is an empirical formula that only has a certain degree of accuracy within the limited range of the rated temperature TN or the nominal resistance value RN because the material constant B itself is also a function of temperature T.
Rated zero power resistance value R25 (Ω)
According to the national standard, the rated zero power resistance value is NTC thermistor at the reference temperature of 25 ℃ measured resistance value R25, the resistance value is NTC thermistor nominal resistance value. Generally speaking, how much resistance NTC thermistor, also refers to the value. For the commonly used NTC thermistor, B value range is generally between 2000K ~ 6000K.
NTC Negative Temperature Coefficient Thermistor Working Principle
NTC is the abbreviation of Negative Temperature Coefficient, meaning negative temperature coefficient, refers to the negative temperature coefficient of semiconductor materials or components, the so-called NTC thermistor is a negative temperature coefficient thermistor. It is based on manganese, cobalt, nickel and copper and other metal oxides as the main raw material, made of ceramic technology. These metal oxides are of a semiconductor nature because they are completely similar in conductivity to germanium, silicon and other semiconductor materials. When the temperature is low, the number of carriers of these oxide materials is reduced, so that the resistance value is high and the number of carriers is increased, so that the resistance value is lowered.
The following are the same as the "
NTC negative temperature coefficient thermistor composition
NTC (Negative Temperature Coefficient) refers to the temperature rise with the resistance index is reduced, with a negative temperature coefficient of thermistor phenomena and materials. The material is made of manganese, copper, silicon, cobalt, iron, nickel, zinc and other two or more metal oxides for the full mixing, molding, sintering and other processes made of semiconductor ceramics can be made with a negative temperature coefficient (NTC) thermistor. The resistivity and material constant vary with the material composition ratio, sintering atmosphere, sintering temperature and structure state. There is also a non-oxidant NTC thermistor material represented by silicon carbide, selenium tin oxide, tantalum nitride, and the like.
NTC thermal semiconductors are mostly spinel structure or other structures with a negative temperature coefficient, the resistance value can be approximated as: RT, RT0 were temperature T, T0 when the resistance value, Bn for the material constant. The ceramic grain itself changes due to the temperature change, which is determined by the semiconductor properties. The rated zero power resistance value is the resistance value R25 measured by the NTC thermistor at the reference temperature of 25 ° C, which is the nominal resistance of the NTC thermistor. Generally speaking, how much resistance NTC thermistor, also refers to the value.
NTC Negative Temperature Coefficient Thermistor Main Parameters
Zero power resistance value RT (Ω)
RT refers to the resistance value measured by the measured power when the resistance value is changed relative to the total measurement error at the specified temperature T.
The relationship between the resistance value and the temperature change is:
RT = RN expB (1 / T - 1 / TN)
RT: NTC thermistor resistance at temperature T (K).
RN: NTC thermistor resistance at rated temperature TN (K).
T: Specified temperature (K).
B: NTC thermistor material constant, also known as thermal index.
Exp: exponent of the natural number e (e = 2.71828 ...).
The relational expression is an empirical formula that only has a certain degree of accuracy within the limited range of the rated temperature TN or the nominal resistance value RN because the material constant B itself is also a function of temperature T.
Rated zero power resistance value R25 (Ω)
According to the national standard, the rated zero power resistance value is NTC thermistor at the reference temperature of 25 ℃ measured resistance value R25, the resistance value is NTC thermistor nominal resistance value. Generally speaking, how much resistance NTC thermistor, also refers to the value. For the commonly used NTC thermistor, B value range is generally between 2000K ~ 6000K.
