PTC Thermistors for Constant Temperature Heating

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The constant temperature heating characteristics of PTC thermistors for constant temperature heating are determined by the material properties. The principle is that when power is applied to the PTC thermistor, self-heating causes the component’s temperature to rise, causing the resistance value to enter the transition region and the current to drop rapidly. Consequently, the surface temperature of the PTC thermistor remains constant. This temperature is dependent solely on the PTC thermistor’s Curie temperature and the applied voltage, and is largely independent of the ambient temperature.

PTC constant temperature heaters are heating devices designed to utilize the constant temperature heating characteristics of PTC thermistors. In low- and medium-power heating applications, PTC heaters offer advantages over traditional heating elements, como aquecimento constante de temperatura, no open flames, high heat conversion efficiency, minimal influence from power supply voltage, and a long lifespan. Their use in electric heating appliances is increasingly favored by R&D Engenheiros.

PTC thermistors for constant temperature heating can be manufactured in a variety of shapes and specifications. Common shapes include discs, rectangles, strips, rings, and honeycomb pores. Combining the above-mentioned PTC heating elements with metal components can create various high-power PTC heaters.

Design de aplicativos
Utilizing the constant-temperature heating principle of PTC thermistors, these devices can be designed for applications such as hair straighteners, hair clips, hair clips, perms, perms, ceramic perms, pinça de cabelo, curling irons, electric combs, negative ion hair curlers, Massagers, mosquito repellents, mosquito repellents, mosquito coil dispensers, fragrance dispensers, perfume dispensers, hot melt glue guns, heated foot baths, laminating machines, thermos cups, water boilers, máquinas de café, coffee warmers, coffee heaters, dispensadores de água, hot and cold water dispensers, milk heaters, aquecedores de água, shower heaters, electric mosquito repellents, hand warmers, secadores, electric hot plates, ferros elétricos, Ferros de solda elétrica, electric thermal adhesives, curling irons, showers, fan heaters, drying rooms, Aquecedores elétricos, Aquecedores elétricos, air conditioning systems, air conditioning heating systems, space heaters, air heating systems, hot water kettles, Secadores de sapatos, shoe drying devices, Aquecedores de pé, Placas de aquecimento elétrico, Analisadores de espectro, Terapia de espectro, Dispositivos de fisioterapia, aquecimento infravermelho, secadores de roupa, Carburadores de motocicleta, umidificadores elétricos, Aquecimento à prova de umidade para instrumentos elétricos, small crystal device constant temperature baths, incubadoras de temperatura constantes, garrafas térmicas eletrônicas, insulated boxes, insulated cups, insulated trays, insulated cabinets, insulated tables, Placas de aquecimento elétrico, Dispositivos de terapia térmica, Máquinas de café quente, Tratamentos de beleza a vapor, Melter de cera, geradores de vapor, umidificadores, umidificadores, Extrusores de chocolate, hot packs, Ferros de solda elétrica, acupuntura, urinary catheters, Aquecedores de pé, secadores de mão, Máquinas de algodão doce, Massagers, liquefied gas cylinder heating, Pequenos aquecedores de ar quente, secadores de cabelo, Aquecedores da sala, secadores, armários secos, secadores de roupa, Equipamento de secagem industrial, Electric dust collector hopper heater, train locomotive electric heater, aquecimento do molde, Aquecimento de controle à prova de umidade do gabinete, Monitore à prova de umidade, forno elétrico, Torradeira elétrica, infusion box, Equipamento médico, Aparelhos domésticos, aparelhos diários, pequenos aparelhos…etc..

PTC heater Chinese manufacturer

The structure and size of PTC heating plate

Model Parameters

Ring Temperature Resistance 25℃/h	Surface Temperature /℃	Maximum Voltage /V	Diâmetro D/mm	Comprimento L/mm	Largura Com mm	Grossura T/mm
500~ 1500	50	270	8			3
300~ 800	85	140		16	11	2.5
150~ 400	90	140		16	11	2.5
600~ 1500	100	270	20			2.5
500~ 1500	110	270		16	11	2.2
500~ 1500	130	270	20			2.2
200~ 800	150	140	10.8			2.2
200~ 800	155	270	10.8			2.2
500~ 1500	155	270	10.8			2.2
1.5~ 5k	170	140		5	4	1.6
150~ 500	175	140	10.8			2.2
500~ 1500	180	270	10.8			2.2
200~ 800	185	270	10.8			2.2
1~ 3k	195	270	8			2.5
800~ 2k	230	270		19	12	2.2
800~ 2k	250	270	13			2.5
2~ 5k	250	270	20			2.5
300~ 1k	250	140		23.5	10	2.2
800~ 2k	255	270		23.5	10	2.2
500~ 2k	275	270		35	10	2.1
300~ 800	280	140		24	15	2.5
0.8~ 3,5k	280	270		24	15	2.5

Notas de uso
1) The PTC heater features automatic constant temperature control, eliminating the need for a temperature control system. It is the core component of all PTC heaters.
2) Four electrode types are available: electroless nickel + silver, melt-blown aluminum, printed aluminum + silver, and printed aluminum.
3) The operating voltage range is very wide. Even with a 2x increase in operating voltage, the surface temperature changes minimally.
4) When multiple PTC heaters are used together, Eles devem estar conectados em paralelo, não em série.
5) This product does not have lead wires or insulation. If this is not feasible, please select a model with an external insulation film or a metal housing.

Metal shell PTC heater

Dimensions and structure of metal shell PTC heater

Dimensions and Structure of Externally Insulated Film PTC Heaters

Model Parameters

Comprimento/mm	Largura/mm	Espessura/mm	Surface Temperature/℃	Insulation Withstand Voltage/V	Operating Voltage/V
30~ 120	20	5.0	60~ 280	3750	100~ 240
30~ 120	30	6.0	60~ 280	3750	100~ 240
30~ 120	33	7.0	60~ 280	3750	100~ 240
30~ 120	35	7.0	60~ 280	3750	100~ 240
30~ 120	40	7.0	60~ 280	3750	100~ 240
30~ 120	43	7.0	60~ 280	3750	100~ 240
30~ 120	46	7.0	60~ 280	3750	100~ 240
30~ 120	56	7.0	60~ 280	3750	100~ 240

Temperatures can be designed between 60°C and 280°C, and operating voltages can be designed between 12V and 240V, depending on customer requirements.

Usage Precautions
1) After power is applied, the heating power decreases gradually and then stabilizes. Stable power depends on operating conditions. The power of the same PTC heater can vary several times depending on operating conditions. Quanto mais rápido a dissipação de calor, quanto maior o poder estável; the higher the PTC surface temperature, Quanto maior o poder.
2) The surface temperature of the PTC heater is controlled by the PTC itself and can be controlled by disconnecting the circuit, but not by adjusting the voltage.
3) While PTCs are inherently highly reliable and have a long lifespan, improper assembly can result in unstable power and temperature.
4) When using multiple PTCs, Eles devem estar conectados em paralelo, não em série.

Externally Insulated Film PTC Heaters

Dimensions and Structure of Externally Insulated Film PTC Heaters

Model Parameters

Comprimento (milímetros)	Largura (milímetros)	Grossura (milímetros)	Surface Temperature (°C)	Insulation Withstand Voltage (V)	Operating Voltage (V)
24	10	3.0~ 3.5	85~ 280	3750	100~ 240
24	15	3.0~ 3.5	85~ 280	3750	100~ 240
35	8	3.0~ 3.5	85~ 280	3750	100~ 240
35	10	3.0~ 3.5	85~ 280	3750	100~ 240
35	13	3.0~ 3.5	85~ 280	3750	100~ 240
35	15	3.0~ 3.5	85~ 280	3750	100~ 240
48	8	3.0~ 3.5	85~ 280	3750	100~ 240
48	10	3.0~ 3.5	85~ 280	3750	100~ 240
48	13	3.0~ 3.5	85~ 280	3750	100~ 240
48	15	3.0~ 3.5	85~ 280	3750	100~ 240
60	8	3.0~ 3.5	85~ 280	3750	100~ 240
60	10	3.0~ 3.5	85~ 280	3750	100~ 240
60	13	3.0~ 3.5	85~ 280	3750	100~ 240
60	15	3.0~ 3.5	85~ 280	3750	100~ 240
70	8	3.0~ 3.5	85~ 280	3750	100~ 240
70	10	3.0~ 3.5	85~ 280	3750	100~ 240
70	13	3.0~ 3.5	85~ 280	3750	100~ 240
70	15	3.0~ 3.5	85~ 280	3750	100~ 240
70 above	15	3.0~ 3.5	85~ 280	3750	100~ 240