When to Use metal oxide film resistor？

When designing an electronic project, selecting the right components is crucial for performance and reliability. One such critical component is the resistor, and among the various types available, thick film metal oxide resistors stand out for their versatility and dependability. Let's dive into the top 10 reasons why you should consider thick film metal oxide resistors for your next project.

For more information, please visit Xieyuan Electronic.

1. High Resistance to Environmental Stress

Thick film metal oxide resistors are known for their robustness, even in harsh environments. They are built to withstand extreme temperatures, humidity, and mechanical stress, making them an excellent choice for applications requiring durability.

2. Excellent Thermal Stability

Temperature variations can impact the performance of many electronic components. However, thick film metal oxide resistors maintain their stability across a wide range of temperatures. This makes them ideal for use in industries such as automotive, aerospace, and industrial electronics.

3. Low Noise Characteristics

In sensitive applications where signal integrity is vital, the low noise performance of thick film metal oxide resistors is a significant advantage. They help reduce interference, ensuring the smooth functioning of your electronic circuits.

4. High Voltage and Power Handling

These resistors are designed to handle high voltage and power levels without compromising performance. Whether it's for power supplies or industrial equipment, thick film metal oxide resistors offer reliability under demanding conditions.

5. Compact and Space-Saving Design

With increasing miniaturisation in electronic devices, compact components are more critical than ever. Thick film metal oxide resistors come in a variety of sizes, allowing designers to optimise space without sacrificing functionality.

6. Customisable Options for Specific Needs

Every project has unique requirements, and thick film metal oxide resistors can be tailored to meet those needs. For instance, the CSK series offers standard options, the CVH series excels in high voltage applications, and the CUL series provides unlacquered resistors for specialised uses.

7. Reliable Performance Over Time

Longevity is a hallmark of thick film metal oxide resistors. Their construction ensures that they maintain consistent performance throughout their lifecycle, reducing the need for frequent replacements and maintenance.

8. Cost-Effective Solution

Despite their advanced features, thick film metal oxide resistors are cost-effective, providing excellent value for money. Their reliability and durability translate into long-term savings for your projects.

9. Compliance with Industry Standards

Thick film metal oxide resistors are designed to meet stringent industry standards, ensuring their suitability for a broad range of applications. They are tested rigorously to guarantee safety and performance.

10. Trusted Expertise and Quality Assurance

When you choose thick film metal oxide resistors from Cermet Resistronics, you benefit from decades of expertise in resistor manufacturing and R&D. With 34 years of manufacturing experience and over 60 years of innovation in resistor technologies, Cermet ensures top-notch quality and reliability in every product. Our CSK, CVH, and CUL series are designed to meet diverse application requirements, backed by a dedicated team of experts who prioritise customer needs.

Applications of Thick Film Metal Oxide Resistors

Thick film metal oxide resistors find applications in various industries, including:

• Automotive: For electronic control units, lighting systems, and sensors.
• Industrial: In power supplies, motor controls, and automation systems.
• Consumer Electronics: For televisions, audio equipment, and household appliances.
• Medical Devices: In diagnostic equipment and monitoring systems.

Why Choose Cermet Resistronics?

Cermet Resistronics is a trusted name in the resistor industry, offering a wide range of products tailored to meet the evolving needs of customers. Our commitment to innovation, quality, and customer satisfaction sets us apart. With our extensive experience and a team of dedicated experts, we provide optimal solutions for your electronic projects.

Whether you're looking for resistors that can handle high voltage, resistors for specialised applications, or reliable options for consumer electronics, Cermet's thick film metal oxide resistors are the perfect choice.

If you are looking for more details, kindly visit glass glaze resistor.

Conclusion

Thick film metal oxide resistors are a versatile and reliable choice for a wide range of electronic applications. With their durability, stability, and cost-effectiveness, they provide excellent value for any project. Partner with Cermet Resistronics to access high-quality resistors designed to meet your specific needs. Let's bring your projects to life with components you can trust.

The first alternative to a carbon composition resistor is a metal oxide film resistor. These resistors are very easy to manufacture as compared to metal film resistors. Firstly we have to know that metal oxide is one kind of metallic compound that is formed due to the chemical bonding among the oxygen atom as well as other elements. So it includes a minimum of two or above different kinds of atoms like a tin with oxygen. Thus, tin oxide is utilized for designing these resistors. These resistors are the most frequently used resistors because they have superior performance as compared to carbon film & carbon composition resistors. So this article discusses an overview of a metal oxide film resistor, it's working, and its applications.

What is Metal Oxide Film Resistor?

Metal oxide resistor definition is; the fixed value and axial resistors which are made with the ceramic rod that is covered with a metal oxide thin film like tin oxide are known as metal oxide film resistor. These resistors should not be confused with metal oxide varistors because they are made with silicon carbide or zinc oxide. These resistors are used mostly wherever power dissipation is necessary. The metal oxide resistor diagram is shown below.

Specifications

The performance guide of the metal oxide film resistor is given below.

• The available tolerance typically is ±1%, ±2%, ±5%, ±10%,
• Its resistance value ranges from 1Ω to 10MΩ.
• Maximum noise is 0.2 µV/V.
• The temperature coefficient is ±300 ppm/°C.
• The voltage coefficient is 0. %/V.
• The resistor temperature maximum is 300°C.
• It has outstanding long-time stability.
• It has overload or high surge capability.
• The standard resistance tolerance is ±5%.

Construction of Metal Oxide Film Resistor

The metal oxide film resistor construction is the same as the metal film resistor except for the material used to construct the film. This resistor uses tin oxide to construct the film which is made with tin oxide as well as antimony oxide which works as the resistive element for the electric current. Thus, this material restricts the current flow to a certain level.

The manufacturing procedure of a metal oxide film can be done with chemical deposition techniques & almost ceramic carriers are used as substrates always. The deposition procedure is obtained by the pure metals reaction with gas at low pressure & high temperature. The metal oxide film is most frequently produced with a chemical deposition process. Here tin oxide is the common metal oxide film that is created by heating the body of this resistor within a tin chloride steam.

Usually, other metal oxide film uses a different deposition procedure. Initially, a thin metal film is applied, after that it is reacted by oxygen. So the desired composition is attained by simply measuring the resistance.

The working of this resistor is; once the film is applied to the body of the resistor then the final value of resistance can be achieved by applying a helical cut. Usually, this can be done by laser cutting but earlier it was done by sandblasting or grinding. Here, the spiral cut on the resistor will make the resistance path longer & also increases the value of resistance up to a hundred times higher. The value of resistance can be controlled precisely by cutting. The resistance of his resistor mainly depends on the antimony oxide amount of added to the tin oxide; the helical metal oxide film cut width & the metal oxide film layer thickness.

Characteristics

The characteristics of a metal oxide film resistor are given below.

• These resistors give better performance as compared to other resistors like carbon film & metal film resistors like voltage rating, power rating, surge capacity, high-temperature operation & overload capabilities.
• So these resistors are preferred mainly for high-endurance applications.
• These resistors' stability properties are lower than metal film resistors.
• These have very poor properties for tolerance & low values.
• The temperature coefficient of metal oxide film resistors is higher as compared to metal film resistors like 300 ppm/0C.
• These resistors use tin oxide as a resistive material that is contaminated by antimony oxide to enhance resistivity.
• The antimony oxide amount added will determine the resistance level, the metal oxide film layer thickness & the helical metal oxide film cut width.
• These resistors can withstand high temperatures as compared to metal film or carbon resistors. The noise property of these resistors is the same of carbon resistors.

Metal Oxide Film Resistor Color Code

Generally, cylindrical resistors are color coded with bands/markings to identify the values of resistance & tolerance very quickly like metal film, carbon film, fuse, winding, metal film, and metal oxide film resistors. So the resistance value can be found based on the color code of the resistor. Resistors are available in four to six color bands on the resistors which specify the value of resistance.
Please refer to this link for: Resistor Color Code.

Please refer to this article for the Difference between Metal Oxide Resistor & Metal Film Resistor.

Advantages & Disadvantages

The advantages of a metal oxide film resistor are discussed below.

• The performance of this resistor is high compared to metal film & carbon film resistors.
• These resistors are used by many designers in high-endurance applications.
• These are not expensive as compared to carbon composition type resistors.
• They have superior high surge current capacity.
• These operate at higher temperatures.
• They have high stability & reliability.
• These are available in small sizes.
• They produce less noise.

The disadvantages of a metal oxide film resistor are discussed below.

• These are not appropriate for high-frequency-based applications.
• Nowadays these are not commonly used.
• Its installation is difficult.

Applications

The applications of a metal oxide film resistor are discussed below.

• These are the main types of resistors within basic circuits.
• These resistors are used where power dissipation is required above 1 W.
• These are used where high stability is necessary.
• These are used in medical equipment & telecommunication.
• These are used in power applications around several watts