Products Desc.
PTC Thermistor Sensor for Heating is also called Positive Temperature Coefficient (PTC) thermistor. It is a type of temperature-sensitive resistor that exhibits a significant increase in resistance as its temperature rises. It is widely used for heating applications due to its unique heating properties. When used for heating purposes, the PTC thermistor is often referred to as a "self-regulating" or "self-limiting" heater.
The basic construction of a PTC thermistor consists of a ceramic or polymer material doped with a special additive that provides the positive temperature coefficient characteristic. As the temperature of the thermistor increases, the resistance also increases, which means it will draw less current from the power source and generate less heat. This self-regulating feature is what makes PTC thermistors particularly attractive for heating applications as they offer a built-in safety mechanism.
Features of PTC Thermistor Heater
1. Construction: The PTC thermistor with wire is usually cylindrical or disk-shaped, with the PTC material encapsulated in a ceramic or polymer case. The leads or wires are attached to the opposite ends of the thermistor, which allow for easy electrical connections.
2. Electrical Resistance: At lower temperatures, the PTC thermistor's resistance is relatively low. However, as the temperature increases, the resistance rises significantly. This property is exploited for its self-regulating heating behavior.
3. Heating Applications: PTC thermistors with wire are commonly used in heating applications where self-regulation is desired. They are often employed in heating elements for various devices like space heaters, heated seats in cars, hair dryers, and other consumer and industrial heating applications.
4. Temperature Sensing: Besides their heating applications, PTC thermistors with wire can also be utilized for temperature sensing. By measuring the resistance of the thermistor, the temperature of the surrounding environment can be determined.
5. Connection: The wire leads make it easy to connect the PTC thermistor to the rest of the circuit. These leads can be soldered or crimped onto other components, making the integration process simpler.
Product Parameter
| Product name: | PTC Thermistor Sensor for Heating | Tolerance: | 20% 25% 30% |
| Rated Voltage: | 3.7V To 265V | Technology: | Ceramic Composition |
| Curie Temperature: | 65±10℃ | Rated Zero-Power Resistance: | 18Ω |
| Surface Temperature: | 70±10℃ | Max.Operating Voltage: | 14V DC |
| Storage Condition: | -10℃～+40℃ | Package: | Inner Foam Box |
Products Details
Models and Parameter
| Resistance in normal temperature 25℃/Ω | Surface Temperature /℃ | Max Voltage /V | Diameter D/mm | Length L/mm | Width W/mm | Thickness T/mm | Application |
| 500～1500 | 50 | 270 | 8 | 3 | Physiotherapy | ||
| 300～800 | 85 | 140 | 16 | 11 | 2.5 | Massage equipment | |
| 150～400 | 90 | 140 | 16 | 11 | 2.5 | Massage equipment | |
| 600~1500 | 100 | 270 | 20 | 2.5 | Massage equipment | ||
| 500～1500 | 110 | 270 | 16 | 11 | 2.2 | Shoe dryer | |
| 500～1500 | 130 | 270 | 20 | 2.2 | Heating plate | ||
| 200～800 | 150 | 140 | 10.8 | 2.2 | Degaussing heating | ||
| 200～800 | 155 | 270 | 10.8 | 2.2 | Wax melter | ||
| 500～1500 | 155 | 270 | 10.8 | 2.2 | Heating plate | ||
| 1.5~5K | 170 | 140 | 5 | 4 | 1.6 | Delay switch | |
| 150～500 | 175 | 140 | 10.8 | 2.2 | Heating plate | ||
| 500～1500 | 180 | 270 | 10.8 | 2.2 | Plastic clip | ||
| 200～800 | 185 | 270 | 10.8 | 2.2 | Degaussing heating | ||
| 1～3K | 195 | 270 | 8 | 2.5 | Mosquito killer | ||
| 800～2K | 230 | 270 | 19 | 12 | 2.2 | Curling iron | |
| 800～2K | 250 | 270 | 13 | 2.5 | Mosquito killer | ||
| 2～5K | 250 | 270 | 20 | 2.5 | Water heating | ||
| 800～2K | 250 | 140 | 23.5 | 10 | 2.2 | Heating plate | |
| 800～2K | 255 | 270 | 23.5 | 10 | 2.2 | Hair straightener, heating plate | |
| 500～2K | 275 | 270 | 35 | 10 | 2.1 | Hair straightener, heating plate | |
| 300~800 | 280 | 140 | 24 | 15 | 2.5 | Air heating | |
| 0.8~3.5K | 280 | 270 | 24 | 15 | 2.5 | Air heating |
Wide Appilcation
1. Temperature Sensing and Monitoring: PTC thermistors are commonly used as temperature sensors in various electronic devices and systems. They can accurately measure temperature changes in a circuit or the surrounding environment and are used in thermostats, HVAC systems, electronic appliances, and industrial equipment.
2. Temperature Compensation: PTC thermistors can be utilized to compensate for the temperature-dependent characteristics of other electronic components. By incorporating PTC thermistors into circuits, it is possible to stabilize the performance of components like transistors, sensors, and oscillators over a wide temperature range.
3. Overcurrent Protection: PTC thermistors can act as resettable fuses in electronic circuits to provide overcurrent protection. When the current exceeds a certain threshold, the PTC thermistor's resistance increases dramatically, limiting the current flow and protecting the circuit from damage. Once the fault is removed, the PTC thermistor returns to its low resistance state.
4. Inrush Current Limiting: In power supply circuits, PTC thermistors can be used to limit inrush currents during the startup phase. When power is initially applied, the thermistor has a low resistance, which limits the current surge. As the device heats up, the resistance increases, allowing normal operation.
5. Self-Regulating Heaters: PTC thermistors are widely used as self-regulating heating elements. When used as heaters, their resistance increases with rising temperature, leading to a reduction in current flow and heat output. This inherent self-regulating property prevents overheating, making them suitable for applications like space heaters, heated seats, and heating pads.
6. Motor Starters: PTC thermistors can serve as effective motor starters in certain applications. By using the thermistor in series with the motor, it acts as a starting element, limiting the high startup current. As the motor reaches its operational speed, the PTC thermistor heats up and increases its resistance, reducing its impact on the circuit.
Factory Tour
Dongguan Senreach Electronic Co., Ltd. was established in 2000. Our factory covers an area of 4000 square meters with a monthly production capacity of 50 million pieces. We are committed to becoming a comprehensive circuit protection component manufacturer and solution supplier.
We are specialized in over current protection, over temperature protection, over voltage protection design, development, production and sales. Products are widely used in consumer electronics, automobiles, ships, communications, power supplies, power tools, new energy and other fields.
With variety of advanced manufacturing and testing equipment, we adopt perfect quality management system to ensure that every single piece of our components are safe and stable. Our operations are ISO9001:2000-certified and products meet international standards.
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Why Choose Us
Price Advantage
We have a complete suuply chain from raw materials to final packing which enables us to control the production cost at every step.
Guaranteed Quality
Every piece of product pass full inspection by both auto test equipment and our QA team.
Stock Wholesale
We have open stock for some universal standard products. Delivery time is just about 1 week.
One-Stop service
We have R&D, QA, sales and after-sales team to offer you a full service including selection recommendation, technical support, after-sales protection.
Exhibition
In the past ten years, we have participated in a lot of domestic and foreign exhibitions about electronic parts. More and more foreign traders got to know our factory, so that they could directly buy from our factory and reduce their product costs. We will update our exhibition infomation on the website.
We’re confident in the design and quality of our KSD 309 Series Thermostat. If you are not sure whether our parts correctly fit your appliance, please feel free to contact us or ask a question.
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