PTC Thermistor Application Case
July 30, 2021
Thermistor is a type of sensitive element, its resistance value will show a step change with the temperature of the thermistor body, and it has semiconductor characteristics.
Thermistors are divided into different temperature coefficients: positive temperature coefficient thermistor (abbreviated as PTC thermistor) negative temperature coefficient thermistor (abbreviated as NTC thermistor)
PTC Thermistor Application Case | ||||||||
PTC Application | Resistance-temperature characteristics | Volt-Ampere Characteristics | Current-time characteristics | |||||
Temperature sensing | Temperature compensation | Overcurrent protection | Constant temperature heating | Warm air heating | Automatic degaussing | Motor start | Delay start | |
Color TV | ● | ● | ● | |||||
Color display | ● | ● | ||||||
Program Control Exchange | ● | ● | ||||||
Energy-saving lamps | ● | |||||||
Electric mosquito repellent | ● | |||||||
Household heater | ● | ● | ● | |||||
Communication machine | ● | ● | ||||||
refrigerator | ● | |||||||
Air conditioning | ● | ● | ||||||
transformer | ● | |||||||
Audio equipment | ● | ● | ● | |||||
Massage chair | ● | |||||||
Cold storage | ● | ● | ||||||
shoes dryer | ● | |||||||
Dehumidifier | ● | ● | ||||||
Electric fan | ● | |||||||
Rice cooker | ● | ● | ||||||
Electric shoe | ● | |||||||
Electric hot plate | ● | |||||||
Dryer | ● | ● | ● | |||||
Clothes dryer | ● | ● | ||||||
Heating machine | ● | ● | ● | ● | ||||
Intravenous heating | ● | |||||||
Lightweight plastic sealing machine | ● | |||||||
Car low temperature starter | ● | |||||||
Steam generator | ● | |||||||
Car fuel heater | ● | |||||||
humidifier | ● | |||||||
hair curler | ● | |||||||
hair dryer | ● | |||||||
Acupuncture | ● | |||||||
Power failure protector | ● | |||||||
DVD player | ● | ● | ||||||
Copier | ● | ● | ||||||
Train conservatory | ● | ● | ||||||
vending machine | ● | ● | ● | ● | ● | |||
car | ● | ● | ● | ● | ● | |||
Washing machine | ● | ● | ||||||
Sweeper | ● | ● | ● | |||||
Transistor | ● | |||||||
Fluorescent lamp | ● | |||||||
computer | ● | ● | ||||||
Motor starter | ● | ● | ||||||
Fire alarm | ● | ● | ||||||
Thermometer | ● | |||||||
Level gauge | ● | |||||||
Car heater | ● | |||||||
Car incubator | ● | |||||||
Hot air curtain | ● | |||||||
Hand warmer | ● | |||||||
Tea dryer | ● | |||||||
Water pipe heater | ● | |||||||
Travel clothes hanger | ● | |||||||
Fan protection regulator | ● | ● | ||||||
Automatic door motor protector | ● | |||||||
Car paint room | ● | |||||||
Bath heater | ● | |||||||
Liquefied gas cylinder heater | ● | |||||||
shower | ● | |||||||
Beauty container | ● | |||||||
Electric heating table | ● | |||||||
Electronic starter | ● | ● | ||||||
Baby bottle thermostat | ● | |||||||
Electric heating bag | ● | |||||||
Hot treasure | ● | |||||||
Car heating cup | ● | |||||||
Electric moxibustion device | ● | ● | ||||||
Yogurt thermostat cup | ● | |||||||
Hot compress | ● | ● | ||||||
Electric iron | ● | |||||||
Electric thermos | ● | |||||||
Infusion controller | ● | ● | ● | |||||
Power saving switch | ● | ● | ||||||
Young poultry and livestock insulation board | ● | |||||||
Electric hip flask | ● | |||||||
Electric blanket | ● | ● | ||||||
Health heat pad | ● |
PTC is the abbreviation of Positive Temperature Coefficient, which means positive temperature coefficient, and generally refers to semiconductor materials or components with a large positive temperature coefficient.
Usually we refer to PTC refers to the positive temperature coefficient thermistor, referred to as PTC thermistor.
PTC thermistor is a typical temperature-sensitive semiconductor resistor. When it exceeds a certain temperature (Curie temperature), its resistance value increases stepwise as the temperature rises.
PTC thermistors are classified according to their materials: ceramic PTC thermistors and organic polymer PTC thermistors
A large number of PTC thermistors are currently used
☞ PTC thermistors for constant temperature heating
☞ PTC thermistors for Low voltage heating
☞ PTC thermistors for air heating
☞ PTC thermistors for overcurrent protection
☞ PTC thermistors for overheat protection
☞ PTC thermistors for delayed start
Under normal circumstances, organic polymer PTC thermistors are suitable for overcurrent protection, and ceramic PTC thermistors can be used for the various purposes listed above.