Degaussing MZ71 18OHM Ceramic PTC Thermistor 7.5MM Positive Coefficient Thermistor

Degaussing PTC Thermistor MZ71-18RM 18OHM 30% 270V Pitch 7.5mm For CRT Color TV

I Description Of The Degaussing PTC Thermistor MZ71-18RM

MZ7 PTC thermistor are used as automatic degaussing components in color TVs and color displays, and current-limiting components in AC circuits.

MZ71, 72, 73 series PTC thermistors and Degaussing PTC Thermistorare mainly used in degaussing circuits of color TVs, displays and other CRTs, which can effectively eliminate image distortion, abnormal colors or irregular images caused by stray magnetic fields, and make color The picture is more vivid and clearer. It has the advantages of low residual current and good reliability. At present, the development trend of automatic degaussing PTC thermistors is small size, low resistance, low residual current, high impact resistance, and high reliability.

In order to eliminate image distortion, abnormal colors or irregular images caused by stray magnetic fields, automatic degaussing circuits are designed in color TVs and color displays, which are composed of PTC thermistors & degaussing resistors and degaussing coils. The principle is to add energy every time when the machine is turned on, and gradually remove the energy after normal operation, so that the electron beam is affected by the deflection coil without being affected by any external stray magnetic field. When the machine is turned on, the PTC thermistor & degaussing resistor In a low resistance state, a large current is formed in the degaussing coil, and the magnetic field line is greater than 350At, which can effectively eliminate the influence of stray magnetic fields. Then the PTC thermistor & degaussing resistor enters a high resistance state under the influence of a large current, the loop current is automatically attenuated, the residual current is very small, and it is almost open, and the magnetic field line is reduced to below 0.03At, reaching the acceptable limit under normal operation.


II Dimension Of The Degaussing PTC Thermistor MZ71-18RM (Unit:mm)

III Coating Of The Degaussing PTC Thermistor MZ71-18RM

IV Marking Of The Degaussing PTC Thermistor MZ71-18RM

V Lead Wire Of The Degaussing PTC Thermistor MZ71-18RM

VIII Advantage Of The Degaussing PTC Thermistor MZ71-18RM

1. Has a large inrush current;
2. Low residual current;
3. Very high withstand voltage strength;
4. High impact resistance;
5. High reliability;
6. Reliable product quality;
7. Low power consumption;
8. Small size suitable for PCB;
9. No contact, no noise, long product life;
10. The product's own characteristics enable it to control the current without other controllers.
11. Comply with RoHS requirements.


VIIII Part Numbering Of The Degaussing PTC Thermistor MZ71-18RM

1. Series: color picture tube degaussing PTC thermistor, degaussing resistor-MZ7 series
2. Category:
1- Welding lead type degaussing resistance;
2-shell type (monolithic) degaussing resistor;
3-shell type (double-chip) degaussing resistor.
3. Rated zero power resistance: 18R-18Ω, 9R-9Ω.
4. Resistance tolerance: M-+/-20%, V-+/-25%, X-+30%/-20%.
5. Working voltage: 270-270VAC 140-140VAC
6. Special code: R-Comply with RoHS requirements (such as lead-free).
There are a variety of specifications to choose from, and can also be customized according to customer special requirements


X Inverter Welding Machine Spare Parts- Of The Degaussing PTC Thermistor MZ71-18RM

Inverter welding machine is more and more popular in the world since technoloy required for manufacturing,
however, good protection can assured inverter welding machine functioning well for long term. We can supply
all set of components for overcurrent protection / overvoltage protection. Below is lists we supplying our
customers for your ref:

Dongguan Ampfort Electronics Co., Ltd. is a high-tech enterprise specializing in R&D, manufacturing and sales, committed to becoming a comprehensive supplier of circuit protection components.

We introduced advanced quality system,management systems and high-precision automation equipment from Germany, set up multiple production bases and continue to increase product lines. Our team consist of experienced engineers, passionate business elites, and regularly trained skilled workers, which provides a solid foundation for quality assurance and productivity performance. Moreover, our products have passed safety certifications of many countries and are favored by many consumers by years’ unremitting efforts.

We cooperated with universities and colleges, and will continue to research and develop new products , committed to high-quality circuit protection solutions, and provide global customers with efficient technology, products, and testing support to meet their requirements for rapid development of new products. We are gradually updating from "Made In China" to "Created In China" and to "Intelligent Manufacturing In China", from circuit design to product testing, we will provide you with one-stop service in the field of circuit protection.After years of intensive cultivation, we have maintained a good relationship with our peers and have become distributor of many famous electronic component brands to meet the diverse needs of customers.

The main products include: Thermistors, Varistors, Temperature Sensors, Fuses and corresponding Hardware and Plastic accessories, Inductors, Thermal Protector, Overload/Composite Protectors, Discharge Tubes, Photoresistors and Wiring Harnesses etc. Through the combination of different process devices,Ampfort Electronics can meet customers' individual circuit protection requirements. Our products are widely used in: power adapters, switching power supplies, chargers, transformers, computers, telephones, household appliances, communication products, lighting products, toy products, various instruments and various electronic cables, electrical products, IT, Consumer electronics, automobiles, batteries and other fields.

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