High quality overcurrent protection PTC thermistor
1.over 8 years experience, Professional resistor manufacturer.
2. Good overload resistor.
3. RoHS & ISO9001&ISO14000
4. OEM.
Application and advantages of PTC thermistor:
1, as the heating ceramic PTC element, with automatic constant temperature characteristics, can save a set of temperature control line;
2, as the switch with the ceramic PTC components, with over current, over heat protection, to avoid electrical equipment damage, the structure is simple, reliable;
3, as the temperature protection of ceramic PTC element, in the vicinity of temperature control has a great resistance temperature coefficient, a simple configuration of the comparator circuit can achieve more accurate temperature control;
4, switch temperature adjustment range: -40 to 320;
5, the resistance temperature coefficient is high: the highest over 40%/;
6, resistance value range: 0.1 ~ 20K
7, working voltage range: 3V ~ 1000V
PTC thermistor has three major characteristics:
Resistance temperature characteristic; volt ampere characteristic; current time characteristic.
PTC over current protection circuit
Working features of PTC
Room temperature impedance low, small volume, widely used in various circuits
and electrical over current protection, and can be installed separately, to
maximize the protection each line of security, to make up for the concentrated
protection circuit of the defects of the past, and the traditional use of fuse,
ceramic PTC materials, sheet metal over current protection device in the device characteristics are as follows:
1, the overload current response is rapid, the performance is stable and reliable;
2, impact resistance, long service life;
3, no polarity, AC and DC are available;
4, can be automatically restored;
5, the maximum operating current of up to tens of amps;
6, small size, can be based on customer needs, processing and production of a variety of different shapes, specifications of the product;
7, wide use, can be used for micro motor, motor vehicle circuit, audio equipment, communication equipment, instrumentation, battery components, industrial control systems, computer peripherals, etc..
PTC device, which is a high molecular polymer positive temperature coefficient device, can protect the circuit when the current surge is too high and the temperature is too high. When in use, the connected in series in the circuit, under normal circumstances, the resistance is very small, very small loss, do not affect the normal work of the circuit; but if the flow, such as short circuit occurred, its temperature, its resistance followed by a sharp increase, to achieve the function of current limit, avoid damage electronic circuit components. When the fault is eliminated, the temperature of the PPTC device is automatically dropped, and it is also restored to the low resistance state. Therefore, the PPTC device is also called a fuse fuse.
PTC heater principle and function of PTC type ceramic heater using PTC ceramic heating element and corrugated aluminum by high temperature adhesive composition. The type PTC heater has the advantages of small thermal resistance, high heat transfer efficiency, and is a kind of automatic constant temperature and electric heater. It is a major feature of the safety performance, in any case, will not happen such as electric heater of the surface of the "red" phenomenon, which caused by burns, fire and other safety hazards. The most notable feature is: 1.PTC type ceramic heater Province, the cost of long life. Temperature feedback is not required for the temperature sensor and temperature sensor, which can be used to heat the heater, and the temperature regulation is the material characteristic of its own. 2.PTC type ceramic heater, green environmental protection. The heating temperature of the heating temperature is 200 degrees Celsius, the body is not red and has a protective isolation layer, no application is required to do so. 3.PTC type ceramic heater to save energy. Comparison of electric heating tubes and resistance wire heating products, the product is based on the characteristics of the material itself, according to the change of environmental temperature to adjust its own thermal power output, so it can be used to optimize the power consumption of the heater in the smallest, while high heat efficiency of the material is also greatly enhanced the efficiency of electric energy. Rapid temperature rise, when the wind turbine failure can control the temperature, long life and wide range of use, can be designed and designed according to the need to design and design, can be used to design and design, the shape can not burn, safe and reliable, PTC fever, PTC heater with constant temperature heating, no flame, high heat conversion rate, the power supply voltage, natural life long and other traditional heating components are more and more research and development engineer.
Dongguan Kaian Electronics Co., Ltd. is a professional supplier of electronic components. We are committed to the development and production of various types of resistors, such as, gold aluminum resistors, glass glaze resistors, wirewound resistors, high voltage resistors, pulse resistors, NTC thermistor, PTC thermistor, PTC constant temperature heating film, PTC degaussing resistors, varistors, cement, metal oxide film, carbon film, precision resistors, SMD chip resistors and the like. Widely used in instrumentation, medical equipment, water meters, switching power supply, LED, color TV, refrigerator, energy saving lamps, computers and communication facilities, and other household appliances. And machinery manufacturing, electrical and mechanical braking. Companies with high quality positioning, focusing on user practices and product development, customers get the recognition! We offer high quality and favorable prices.
We have more than 10, 000 square meters of production space and advanced production and testing equipment. Our products are in strict compliance with the quality management system ISO9001, first-class service. All our products have reached the advanced domestic and international standards, the monthly output 1 billion.
Our mission is to adhere to the best products and services to customers, and strive to become the leading supplier of electronic components. We adhere to the "quality first, service first, continuous improvement and innovation to meet customers" business philosophy to "zero defect, zero complaints" as the quality objectives.
Looking ahead, the company will continue adhering to the "equality, credibility, cooperation and development" business philosophy, and constantly increase investment and accelerate the pace of enterprise development, dedicated to domestic and foreign customers with the highest quality products and most satisfactory services, and is willing to sincerely cooperate with all friends, by leaps and bounds! We look forward to our cooperation!
