Detailed description of constant temperature and temperature regulation of PTC ceramic resistor (PTC thermistor):

PTC heating element once exceeds the Curie point temperature, the resistivity suddenly increases, the current dropped to a stable value, to automatically control the temperature, the purpose of constant temperature, without additional temperature control circuit device, PTC heating thermostat, thermostat , Special features from the temperature control, but also according to different temperature requirements through the formula to adjust the Curie temperature of PTC components.

Features:

1: PTC heating thermostat automatically

2: When the PTC heater is used to heat the liquid (such as water), the PTC resistor will not be damaged after the liquid is dried.

3: PTC long life, under normal circumstances, the life expectancy of up to 10 years;

4: Operating voltage 6-240V, when the operating voltage changes 2 times the surface temperature changes very small.

Applications:

Bottle thermostat, mosquito killer, electrochrome, curling iron, electric mosquito repellent, hair clipper, hair curler, heater, air conditioner, electric heating plate (plate), electric kettle, hand warmer, thermotherapy device , water heaters, dryers, yogurt machines, and other heating appliances.

According to customer requirements design different sizes, power!

 

1.Configuration.

There are three types of structures, electric contacts on large sides, electric contacts on one side (the number of China national patent 201120015949.0), used for SMT.

For customer’s convenience, we provide assembled heating elements: PTC heating element with insulator and wire, PTC heating element with shell, PTC air heater,PTC for hair straightener, PTC for curler, PTC with resin coating, PTC for water heater, refering to other webpages.

2. Some samples of uses.

Dryer, air heater, air condition heater, mosquito killer, car's heater, humidifier, de-humidifier, heating-plate, massager, physical therapy machine, hot glue-gun, hair crimper, hair straightener, coffee /milk warmer, water boiler, and so on. PTC is very suitable as a heating element, if the surface temperature on end product was under 260℃.

3. Notice in appliance.

1) The surface temperature on PTC can be controlled by itself, so that control circuit and protecting circuit may be omitted in most appliances.

2) It can be used for heating liquid, and it’s no problem without liquid immerging.

3) It can be used for heating air with fan blowing, and it’s no problem without blowing.

4) There are four electrodes coating to be selected: nickel +silver，melt-jet aluminum, screen print aluminum+silver, screen print zinc +silver.

5) Our PTC has very good operating life, 10 years or longer is possible.

6) Reliable, over temperature was impossible.

7) The surface temperature increases (or decreases) about 8℃, when supplied voltage increases (or decreases) 2 time. 100V to 240V applied voltage is impossible for same PTC heater

8) If customer requires PTC with wire, insulator, or shell, please select other types manufactured by our company.

9) Parallel connection is necessary for two or more PTC connection.

10) The steady state power may be very different with different applied condition for same PTC. The faster is the heat conduction, the higher is the steady state power.

11) In the most case, the type of two electric contacts on large sides was suitable; but in some appliance, we use other electric contacts.

 

Current dimensions of PTC pellets.

Size	Length /mm	Width /mm	Thickness /mm		Size	Length /mm	Width /mm	Thickness /mm
Number			Voltage 3~24/V	Voltage 100~240V	Number			Voltage 3~24/V	Voltage 100~240V
S01	15	9	0.5~2.0	1.8~3.0	S 12	24	15	0.5~2.0	1.8~3.0
S 02	24	6	0.5~2.0	1.8~3.0	S 13	30	6	1.0~2.0	1.8~3.0
S 03	16	10	0.5~2.0	1.8~3.0	S 14	24	16	0.5~2.0	1.8~3.0
S 04	24	8	0.5~2.0	1.8~3.0	S 15	30	10	1.0~2.0	1.8~3.0
S 05	16	11	0.5~2.0	1.8~3.0	S 16	27.6	10.8	0.5~2.0	1.8~3.0
S 06	23.3	13	0.5~2.0	1.8~3.0	S 17	30	13	1.0~2.0	1.8~3.0
S 07	17	13	0.5~2.0	1.8~3.0	S 18	35	6	1.0~2.0	1.8~3.0
S 08	24	13	0.5~2.0	1.8~3.0	S 19	35	10	1.0~2.0	1.8~3.0
S 09	17	14	0.5~2.0	1.8~3.0	S 20	35	9	1.0~2.0	1.8~3.0
S 10	24	10	0.5~2.0	1.8~3.0	S 21	35	13	1.0~2.0	1.8~3.0
S 11	30	5	1.0~2.0	1.8~3.0	S 22	36	13	1.0~2.0	1.8~3.0

 

Size	Diameter /mm	Thickness /mm		Size	Diameter /mm	Thickness /mm
Number		Voltage 6~24/V	Voltage 100~240V	Number		Voltage 6~24/V	Voltage 100~240V
R01	5	0.5~2.0	1.8~3.0	R06	13	0.5~2.0	1.8~3.0
R02	6.3	0.5~2.0	1.8~3.0	R07	14.5	0.5~2.0	1.8~3.0
R03	8	0.5~2.0	1.8~3.0	R08	16	0.5~2.0	1.8~3.0
R04	10	0.5~2.0	1.8~3.0	R09	18	1.0~2.0	1.8~3.0
R05	10.8	0.5~2.0	1.8~3.0	R10	20	1.0~2.0	1.8~3.0

Note：

1) The thicker is the thickness, the higher is the withstand voltage and reliable. Select thicker PTC when it is used for very high voltage and high reliable.

2) The large PTC ceramic was easy to crack, so it could not be made too large. Several small PTC can be assembled becoming larger heater, please read other web pages of our company, PTC heater insulated, PTC heater with shell.

3) Customer’s special dimensions are possible.

4) UL file: E 207611.

4. Current products.

 

Current products with electric contacts on large sides.

 

Part No.	Surface	Diameter.	Thickness	Resistance	Rated voltage.
	Temperature. /℃	/mm	/mm	at 25℃/Ω	/V
MZ9-50CD8T3-220VL	50	8	3	500~1500	220
MZ9-75CD13T1-6VL	75	13	1	3~10	6
MZ9-75CD13T1.4-24VL	75	13	1.4	8~20	24
MZ9-75CD13T2.2-220VL	75	13	2.2	500~1500	220
MZ9-110CD9.8T2.5-24VL	110	9.8	2.5	10~25	24
MZ9-130CD8T2.2-220VL	130	8	2.2	500~1500	220
MZ9-155CD13T1.3-24VL	155	13	1.3	50~90	24
MZ9-175CD10.8T2.2-120VL	175	10.8	2.2	150~500	120
MZ9-175CD8T2.2-120VL	175	8	2.2	150~500	120
MZ9-180CD20T1.4-12VL	180	20	1.4	1~5	12
MZ9-180CD8T2.2-220VL	180	8	2.2	500~3000	220
MZ9-230CD13T2.5-220VL	230	13	2.5	800~2K	220

 

Part No.	Surface	Length	Width	Thickness	Resistance	Rated voltage.
	Temperature. /℃	/mm	/mm	/mm	at 25℃/Ω	/V
MZ9-75CL2W1T0.3-3VL	75	2	1	0.3	80~120	3
MZ9-85CL16W11T2.5-120VL	85	16	11	2.5	300~800	120
MZ9-100CL16W11T2.5-220VL	100	16	11	2.5	600~1500	220
MZ9-110CL23.5W10T2.2-220VL	110	23.5	10	2.2	500~1500	220
MZ9-155CL5W4T1.6-120VL	155	5	4	1.6	2~6K	120
MZ9-215CL30W5T2.1-24VL	215	30	5	2.1	15~70	24
MZ9-215C L30W5T2.1-220VL	215	30	5	2.1	800~3000	220
MZ9-230CL19W12T2.2-220VL	230	19	12	2.2	800~2K	220
MZ9-250CL23.5W10T2.2-120VL	250	23.5	10	2.2	300~1K	120
MZ9-250CL24W15T1.4-12VL	250	24	15	1.4	3~10	12
MZ9-255CL23.5W10T2.2-220VL	255	23.5	10	2.2	800~2K	220
MZ9-255CL36W6T2.3-220VL	255	36	6	2.3	0.5~3K	220
MZ9-280CL24W15T1.4-240VL	280	24	15	1.4	8~20	24
MZ9-280CL24W15T2.5-120VL	280	24	15	2.5	300~800	120
MZ9-280CL24W15T2.5-220VL	280	24	15	2.5	0.8~3.5K	220
MZ9-280CL24W15T3.5-380VL	280	24	15	3.5	3~8K	380
MZ9-300CL24W15T2.5-220VL	300	24	15	2.5	1.5~4K	220

 Note:

1) We have too many other pellets not including here in this table. Customer can ask our salesman.

2) Applied voltage can be 3V~420V.

3) Customer’s required products, various voltages, various dimensions, are possible.

4) UL、CUL file：E 207611

 

Current products with electric contacts on one side.

 

Part No.	Surface	Diameter	Length	Width	Rated	Thickness	Resistance
	Temperature /℃	/mm	/mm	/mm	Voltage /V	/mm	at 25℃/Ω
MZ9-75CD13T0.6-6VD	75	13			6	0.6	3~10
MZ9-75CL16W11T2.2-220VD	75		16	11	220	2.2	1~3K
MZ9-155CD16T1.3-24VD	155	13			24	1.3	100~200
MZ9-250CL24W15T1.4-12VD	250		24	15	12	1.4	10~30
MZ9-260CL10W2.8T2.1-220VD	260		10	2.8	220	2.1	2~6K
MZ9-280CL24W15T2.2-120VD	280		24	15	120	2.2	0.5~2K
MZ9-280CL24W15T2.5-220VD	280		24	15	220	2.5	2~5K
MZ9-280CL24W15T2.5-380VD	280		24	15	380	2.5	5~15K

Note:

1) Utility model patent product, number of patent: ZL 2011 2 0015949. 0., ZL 201220663462.8,

ZL 201420061000.8;

2) Customer’s required products, various voltages, various dimensions, are possible.

 

Current products with two electric contacts on two small sides.

Part No.	Surface	Length	Width	Thickness	Resistance	Rated Voltage /V
	Temperature /℃	/mm	/mm	/mm	at 25℃/Ω
MZ9-75CL24W15T1.5-6VC	75	24	15	1.5	2~10	6
MZ9-75CL24W15T1.5-12VC	75	24	15	1.5	10~30	12
MZ9-75CL24W15T1.5-24VC	75	24	15	1.5	20~50	24
MZ9-150CL24W15T1.5-24VC	150	24	15	1.5	20~50	24
MZ9-150CL24W15T2-120VC	150	24	15	2	200~800	120
MZ9-150CL24W15T2.3-220VC	150	24	15	2.3	1~5K	220
MZ9-200CL24W15T2.0-120VC	200	24	15	2	200~800	120
MZ9-200CL24W15T2.3-220VC	200	24	15	2.3	1~5K	220
MZ9-280CL24W15T1.5-24VC	280	24	15	1.5	30~80	24
MZ9-280CL24W15T2.0-120VC	280	24	15	2	1~5K	120
MZ9-280CL24W15T2.3-220VC	280	24	15	2.3	3~15K	220

Note:

1)This structure of PTC heating pellet can be soldered on small sides, and don’t affect heat conduction;

2)It can be used in SMT assembling.

3)Customer’s required products are possible.

4) China national patent: ZL 201420061000.8

 

Some pictures of PTC heating pellet.