Durable and efficient customizable ceramic resistor cores

Overview of Ceramic Resistor Core

A ceramic resistor core is an important electronic component. It usually consists of a ceramic substrate and a resistive material. The ceramic substrate has good insulation, high temperature resistance and mechanical stability, and provides a stable support platform for the resistive material. The resistive material is attached to the ceramic substrate through a specific process to form a resistive layer with a certain resistance value. These resistor cores are widely used in electronic circuits for current limiting, voltage dividing, and other functions. With stable performance, high reliability, and the ability to work properly in a variety of complex environments, these resistor cores are an indispensable basic component of modern electronic equipment.

Tapes of Ceramic Resistor Core

Tapes of Ceramic Resistor Core are mainly of the following types:

Fixed Ceramic Resistor Core: This is the most common type, and its resistance value is determined at the time of manufacture and cannot be adjusted. It is usually made of ceramic substrate and resistive materials such as metal oxides or carbon film, which have good stability, high temperature resistance, and are widely used in various electronic devices, such as power supply circuits, signal processing circuits, etc.

Variable Ceramic Resistor Core: The resistance value of this type of resistor core can be adjusted by external force, such as by rotating or sliding, to change the resistance value. It is often used in applications that require dynamic adjustment of the resistance value, such as volume control for audio equipment, calibration circuits for instrumentation, etc.

Thermal ceramic resistor core: Its resistance value will change with the temperature. According to the different temperature coefficients, they are categorized into Positive Temperature Coefficient (PTC) and Negative Temperature Coefficient (NTC). PTC thermistors are commonly used for temperature compensation and overcurrent protection, while NTC thermistors are widely used in temperature measurement and temperature compensation circuits.

Different types of ceramic resistor cores play important roles in electronic circuits according to their characteristics and fulfill a variety of application requirements.

Features of Ceramic Resistor Core

A ceramic resistor core is a ceramic-based resistive element core with a number of distinctive features. Firstly, it has excellent insulating properties. The ceramic material itself is a good insulator, which can effectively isolate the current and ensure the safety and stability of the resistor in a high-voltage environment. Secondly, the ceramic resistor core has excellent high temperature resistance and is able to work stably at higher temperatures and is not susceptible to performance changes due to temperature rise, which makes it suitable for high temperature environments or high power applications.

In addition, ceramic resistor core also has good mechanical strength and chemical stability, is not easily affected by external environmental factors (such as humidity, corrosive gases, etc.), long service life. The wide range of resistance values, from a few ohms to millions of ohms, can meet the needs of different circuits. At the same time, the ceramic resistor core temperature coefficient is small, resistance value with the temperature change of the magnitude is low, ensuring the stability under different temperature conditions.

Ceramic resistor cores are also characterized by small size and light weight, making them easy to integrate into a variety of miniaturized electronic devices. These features make ceramic resistor cores widely used in electronic circuits, such as power supply circuits, signal processing circuits, temperature compensation circuits, etc. They are one of the indispensable basic components in modern electronic technology.

Specifications Table of Ceramic Resistor Core

Parameter	Description
Resistor Type	Type of ceramic resistor core
Resistance Range	Range of resistance values available
Power Rating	Maximum continuous power rating at specified ambient temperature
Peak Power	Maximum instantaneous power handling capability
Operating Temperature	Temperature range within which the resistor operates within specifications
Temperature Coefficient	Change in resistance per degree Celsius
Voltage Coefficient	Change in resistance per unit voltage
Load Life Stability	Change in resistance after specified hours of operation at rated power
Short-Time Overload	Change in resistance after specified short-time overload cycles
Thermal Shock Resistance	Change in resistance after specified thermal shock cycles
Humidity Resistance	Change in resistance after specified humidity exposure
Insulation Resistance	Resistance between conductive parts and insulating parts
Dielectric Strength	Maximum voltage the insulating material can withstand without breakdown
Tolerance	Allowed deviation from nominal resistance value
Physical Dimensions	Size and shape of the resistor core
Material	Main materials used in construction
Surface Coating	Protective coating applied to the resistor core
Lead Material	Material used for electrical connections
Compliance	Standards and regulations the resistor core meets

Applications of Ceramic Resistor Core

Ceramic Resistor Core is widely used in electronic, electrical, and various industrial fields due to its excellent characteristics. In electronic equipment, it is commonly used in power supply circuits to limit current and divide voltage to ensure that the components in the circuit work within a safe current and voltage range.

Ceramic resistor cores also have important applications in temperature-sensitive applications. For example, thermally sensitive ceramic resistor cores (such as PTC and NTC) can be used for temperature measurement and temperature compensation. NTC thermistors are often installed in temperature sensors to realize real-time monitoring of ambient temperature through the characteristic change in resistance with temperature, in which the resistance rises rapidly when the current increases abnormally, limiting the current passing through and protecting the circuits from damage. PTC thermistors are used for overcurrent protection.

In addition, ceramic resistor cores are widely used in communication equipment, automotive electronics, home appliances and other fields. In communication base stations, it is used for filtering and signal conditioning; in automotive electronic systems, it is used for engine control units, sensor signal processing, etc.; in home appliances, such as TVs, refrigerators, etc., it is used for power management and temperature control. Its characteristics of high temperature resistance, good stability and high reliability enable it to operate stably in a variety of complex working environments.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. The company exports to many countries, such as the USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are interested, please send an email to sales1@rboschco.com

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T/T, Western Union, Paypal, Credit Card etc.

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By air, by sea, by express, as customers request.

5 FAQs of Ceramic Resistor Core

Q1: What are the applications of ceramic resistor cores?

Power supply circuits: Used for current limiting and voltage dividing to ensure that the components in the circuit work within a safe current and voltage range, such as limiting the starting current in a switching power supply. : Signal Processing Circuit: Used to adjust the signal amplitude, match the impedance to ensure stable signal transmission. Temperature sensitive applications: Thermal ceramic resistor cores are used for temperature measurement and temperature compensation, such as NTC thermistors are often installed in temperature sensors. Over-voltage protection: Pressure-sensitive ceramic resistor cores are used for over-voltage protection, such as in power supply circuits, to suppress surge voltage. High Voltage Circuits: For high voltage circuits such as radar, motor drives, broadcast transmitters, high voltage inverters, high voltage power supplies, medical defibrillators, lasers and X-ray equipment, electron microscopes, electric vehicle charging systems, automotive engine ignition systems, RF amplifiers, semiconductor processes, power conditioning, high voltage switching devices, buffer circuits, and more. High Current and Braking: Used to slow down mechanical systems, such as braking resistors in trains and variable frequency motor drives, to convert kinetic energy into heat. Dynamic Braking Heating: The energy dissipated into the power resistor during dynamic braking can be used to heat the carriages, reducing the need for electrical heating.

Q2: Are ceramic resistor cores adjustable?

The adjustability of ceramic resistor cores depends on their type. Fixed ceramic resistor cores have a resistance value that is determined at the time of manufacture and cannot be adjusted, while variable ceramic resistor cores have a resistance value that can be adjusted by an external force, such as rotation or sliding, to change the resistance value.

Q3: How safe and reliable are ceramic resistor cores?

Ceramic resistor core has high safety and reliability, which is mainly reflected in the following aspects:

No Hidden Trouble of Wire Breaking: More safety than wirewound and film resistors, without the hidden trouble of wire breaking or film cracking failure of wirewound and film products. High temperature resistance: able to work stably at higher temperatures, not easy to change performance due to temperature rise, suitable for high temperature environments or high power applications. Good mechanical strength and chemical stability: not easily affected by external environmental factors (such as humidity, corrosive gases, etc.), long service life. Excellent insulating properties: Ceramic material itself is a good insulator, which can effectively isolate the current and ensure the safety and stability of the resistor in high-voltage environments.

Q4: What are the advantages of ceramic resistor cores over other types of resistor cores?

Ceramic resistor cores have the following advantages over other types of resistor cores:

Superior performance: performance is superior to organic solid core carbon crystal resistors; one inorganic metal-ceramic resistor can replace several organic solid core carbon crystal resistors in an assembly application. Good Power Characteristics: High peak power, instantaneous power up to 5 kW to 30 kW. High Voltage and Current Withstanding Capability: Superior high voltage and high current withstanding characteristics. Wide Operating Temperature Range: Wide range of operating ambient temperatures, such as SP series up to -55°C to +350°C. High Safety: Hidden danger of wire breakage or film cracking failure without wire winding and skin film products. Environmental Compliance: Compliant with EU REACH norms.

Q5: What is the material of the ceramic resistor core?

Ceramic resistor cores are mainly made of high quality materials such as high purity Aluminum Oxide (Al₂O₃), which is usually 99.5% or 95% pure. These materials have excellent thermal conductivity, insulation and resistance to thermal fluctuations, ensuring the reliability and stability of the resistors.