You're here: Electrical & electronic components > Thermistor > PTC thermistor > PTC thermistor for temperature protection
PTC thermistor for temperature protection
PTC (positive temperature coefficient) thermistor switches at one particular temperature. A PTC thermistor is less expensive than a thermostat, and its switch temperature can be more accurately specified. It is also smaller and easier to design-in to electronic circuitry. Therefore PTC thermistor can be ideal devices for temperature detection, monitoring, indicating, limiting and over (excessive) temperature protection. Making use of the characteristics that the resistance of PTC thermistor increases sharply above curie temperature, when ambient temperature increases abnormally, protective circuit installed PTC thermistor will turn on or cut off loop through resistance changing, achieving thermal protection purpose. PTC thermistor protect such equipment and components as motors, transformers, power transistors and thyristors against over-temperature.In normal ambient temperature, PTC thermistor resistance Rp lower than Rs, lower output voltage. When ambient temperature exceeds set temperature, PTC thermistor resistance Rp increases rapidly, and exceeds Rs, and leads Vo increases to high enough voltage, and cause tripping.Typical Application of PTC Thermistor for Temperature Protection and temperature limiting sensors
·Limit temperature measurement of Industrial electronics application.
·Semiconductor heatsinks, enclosure panels, temperature-limited transistors.
·Power supplies, switch power supply.
·Home appliances, such as dish washers, washing machines, ironing machines, electric cookers, etc.
·Electronic data processing and communications engineering (DC/DC converters).
·Motor windings overheating Protection.
·Automotive electronics.
·Lighting applications.
Features of PTC Thermistor for Temperature Protection and temperature limiting sensors
·PTC Thermistor Protection temperature: 60~130℃
·2 Outlook construction: A-radial leaded epoxy resin coated form, B-metal tag lug form.
·Quick response.
·Long stability.
·Small dimension, convenient for installation.
·Do not need to be reset after protection.
Manufacturer/supplier's information
| Company name: | AMWEI Thermistor Co., Ltd. [ Homepage ] | |
| Business address: | 1205, Jidian Zonghe Builiding, No. 32, Meilin Road, Futian, Shenzhen, P.R China. | |
| Zip/postal code: | 518000 | |
| Telephone number: | 86-755-26570111 | |
| Fax number: | 86-755-26571122 | |
| Contact name: | Rosa [ Email ] |
Product groups: Thermistor
Other products from this member
PTC thermistor for overload & over-current protection
Ceramic PTC (positive temperature coefficient) thermistors are used instead of conventional fuses to protect load, such as motors, transformers, or electronic circuit, against overcurrent for circuit protection.
PTC thermistor heater
PTC thermistor heating elements are used wherever measurement and regulating equipment as well as heating devices must be housed in tight confines.
Linear PTC thermistors
Linear PTC thermistor resistance increases with the temperature rises in linearity, displays a virtually linear temperature coefficient over their entire temperature range, suitable in measurement and control system, temperature compensation.
NTC thermistor temperature sensor probe assembly
NTC Thermistor can be assembled in housing in a variety of configurations for temperature sensing, measurement, detection, indicator, monitoring and control.
PTC thermistor for telecom over-current protection
This series of ceramic PTC thermistors help provide protection against power cross, power induction surges and lighting surge defined in ITU, Telcordia, UL.
Inrush current limiting power NTC thermistor
Inrush Current Limiting power NTC thermistor can be a cost effective device to limit the amount of inrush current in a switching power supply or other devices when the power is first turned on.
Other products at Electrical & electronic components > Thermistor > PTC thermistor
PTC thermistor
ZMZ31 series of PTC Thermistor are applicable to various types of fluorescent lamp, electronic ballast and electronic energy-saving lamp. ZMZ6 series as a temperature indicator is small in size and little in calorific capacity.
Our partner