PTC Thermistor for Constant Temperature Heating

Product Overview
The constant temperature heating characteristics of the PTC thermistor for constant temperature heating are determined by the material properties. The principle is that when the PTC thermistor is powered on, the temperature of the component body rises due to self-heating, the resistance value enters the transition zone, and the current drops rapidly, so the surface temperature of the constant temperature heating PTC thermistor continues to maintain a constant value. This temperature is only related to the Curie temperature and the applied voltage of the PTC thermistor, and has little to do with the ambient temperature.
The PTC constant temperature heater is a heating device designed using the constant temperature heating characteristics of the constant temperature heating PTC thermistor. In small and medium power heating occasions, the PTC heater has advantages that traditional heating elements cannot match, such as constant temperature heating, no open flame, high heat conversion rate, minimal influence by power supply voltage, and long natural life. Its application in electric heating appliances is increasingly favored by R&D engineers.
The constant temperature heating PTC thermistor can be made into a variety of shapes and structures and different specifications. Common ones are disc, rectangle, strip, ring, and honeycomb porous. Combining the above-mentioned PTC heating elements and metal components can form various forms of high-power PTC heaters.

Application design of PTC thermistor
Using the constant temperature heating principle and characteristics of constant temperature heating PTC thermistor, it can be designed and applied in hair straighteners, hairpins, hairpin plates, ion perm, perm, perm plate, ceramic perm plate, hair tongs, curling iron, electric hot comb, negative ion perm, massager, mosquito machine, mosquito repellent, mosquito repellent, mosquito coil machine, fragrance, perfume machine, hot melt glue gun, foot washing heating, laminating machine, thermos cup, water boiler, coffee machine, coffee insulation, coffee heater, water dispenser, hot and cold water dispenser, milk heater, water heater, shower heating, electric mosquito repellent, hand warmer, dryer, electric heating plate, electric iron, electric soldering iron, electric heat adhesive, hair curling iron, shower, heater, drying room, electric heater, electric heater, air conditioning, air conditioning heating, heater, air heating, hot pot, Shoe dryers, shoe drying machines, foot warmers, electric heating plates, spectrum analyzers, spectrum therapy, physical therapy devices, infrared heating, clothes dryers, motorcycle carburetors, electric humidifiers, moisture-proof heating for electrical instruments, constant temperature baths for small crystal devices, constant temperature incubators, electronic thermos bottles, incubators, incubator cups, incubator plates, incubator cabinets, incubator tables, electric heating plates, thermal therapy devices, hot coffee machines, steam beauty treatments, wax melters, steam generators, humidifiers, humidifiers, chocolate extruders, hot treasures, electric soldering irons, acupuncture, catheters, foot warmers, hand dryers, cotton candy machines, massagers, heating of liquefied gas cylinders, small warm air heaters, hair dryers, room heaters, dryers, dry cabinets, clothes dryers, industrial drying equipment, Electric dust hopper heater, train locomotive electric heating, mold heating, control cabinet heating moisture-proof, monitor moisture-proof, electric oven, electric toaster, infusion treasure, medical equipment, household appliances, daily appliances, small appliances… and so on.

Model parameters

Normal temperature resistance 25℃/Ω	Surface temperature /℃	Maximum voltage /V	Diameter D/mm	Length L/mm	Width W/mm	Thickness T/mm	Main application
500~1500	50	270	8			3	Physical therapy
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	Demagnetization 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	Laminating clip
200~800	185	270	10.8			2.2	Demagnetization heating
1~3K	195	270	8			2.5	Mosquito repellent
800~2K	230	270		19	12	2.2	Hair curler, hair straightener
800~2K	250	270	13			2.5	Mosquito repellent
2~5K	250	270	20			2.5	Water heating
300~1K	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

Aluminum shell type PTC heater
Appearance and structure

Model parameters

Length/mm	Width/mm	Thickness/mm	Surface temperature/℃	Insulation withstand voltage/V	Using voltage/V	Purpose
30~120	20	5.0	60~280	3750	100~240	Constant temperature heating
30~120	30	6.0	60~280	3750	100~240	Constant temperature heating
30~120	33	7.0	60~280	3750	100~240	Constant temperature heating
30~120	35	7.0	60~280	3750	100~240	Constant temperature heating
30~120	40	7.0	60~280	3750	100~240	Constant temperature heating
30~120	43	7.0	60~280	3750	100~240	Constant temperature heating
30~120	46	7.0	60~280	3750	100~240	Constant temperature heating
30~120	56	7.0	60~280	3750	100~240	Constant temperature heating

According to customer requirements, the temperature can be designed between 60℃~280℃, and the operating voltage can be designed between 12V~240V.
Usage Notes
1) The heating power decreases from large to small after power is turned on, and finally stabilizes. The stable power is related to the use conditions. The same PTC heater may have several times different power under different use conditions. The faster the heat dissipation, the greater the stable power; the higher the surface temperature of the PTC, the higher the power.
2) The surface temperature of the PTC heating element is controlled by the PTC itself, and can also be controlled by disconnecting the circuit, but the surface temperature cannot be controlled by adjusting the voltage.
3) The PTC itself has high reliability and long life, but if it is not assembled properly, the product will have unstable power and temperature.
4) When multiple PTCs are used together, they should be connected in parallel, not in series.

External insulation film type PTC heater
Appearance structure

Model parameters

Length/mm	Width/mm	Thickness/mm	Surface temperature/℃	Insulation withstand voltage/V	Using voltage/V	Purpose
24	10	3.0~3.5	85~280	3750	100~240	Constant temperature heating
24	15	3.0~3.5	85~280	3750	100~240	Constant temperature heating
35	8	3.0~3.5	85~280	3750	100~240	Constant temperature heating
35	10	3.0~3.5	85~280	3750	100~240	Constant temperature heating
35	13	3.0~3.5	85~280	3750	100~240	Constant temperature heating
35	15	3.0~3.5	85~280	3750	100~240	Constant temperature heating
48	8	3.0~3.5	85~280	3750	100~240	Constant temperature heating
48	10	3.0~3.5	85~280	3750	100~240	Constant temperature heating
48	13	3.0~3.5	85~280	3750	100~240	Constant temperature heating
48	15	3.0~3.5	85~280	3750	100~240	Constant temperature heating
60	8	3.0~3.5	85~280	3750	100~240	Constant temperature heating
60	10	3.0~3.5	85~280	3750	100~240	Constant temperature heating
60	13	3.0~3.5	85~280	3750	100~240	Constant temperature heating
60	15	3.0~3.5	85~280	3750	100~240	Constant temperature heating
70	8	3.0~3.5	85~280	3750	100~240	Constant temperature heating
70	10	3.0~3.5	85~280	3750	100~240	Constant temperature heating
70	13	3.0~3.5	85~280	3750	100~240	Constant temperature heating
70	15	3.0~3.5	85~280	3750	100~240	Constant temperature heating
70 and above	15	3.0~3.5	85~280	3750	100~240	Constant temperature heating

According to customer requirements, the temperature can be designed between 50℃~280℃, and the operating voltage can be designed between 3V~240V.

Usage Notes
1) The heating power decreases from large to small after power is turned on, and finally stabilizes. The stable power is related to the use conditions. The same PTC heater may have several times different power under different use conditions. The faster the heat dissipation, the greater the stable power; the higher the surface temperature of the PTC, the higher the power.
2) The surface temperature of the PTC heating element is controlled by the PTC itself, and can also be controlled by disconnecting the circuit, but the surface temperature cannot be controlled by adjusting the voltage.
3) PTC itself has high reliability and long life, but if it is not assembled properly, the product will have unstable power and temperature.
4) When multiple PTCs are used together, they should be connected in parallel, not in series.