Ceramic Capacitor Introduction

 

Ceramic capacitors are essential electronic components widely used in various electronic circuits for their compact size, high capacitance, and reliability. These capacitors are made from ceramic materials with high dielectric constants, such as ceramic titanium barium, titanium dioxide, or other ceramic compositions. The dielectric material determines the capacitor's electrical properties and performance.

 

One of the key advantages of ceramic capacitors is their wide range of capacitance values, spanning from picofarads (pF) to microfarads (μF). They are available in different package sizes, including surface mount (SMD) and through-hole, making them suitable for a wide array of applications.

 

Ceramic capacitors can operate efficiently over a broad range of frequencies, from direct current (DC) to high-frequency applications. They exhibit low equivalent series resistance (ESR) and low equivalent series inductance (ESL), contributing to their excellent performance in high-frequency circuits.

 

Ceramic Capacitor Production Process

Ingredient Mixing and Slurry: Ceramic powder, binder, solvent, etc., are mixed in certain proportions and ball-milled to form ceramic slurry.

Sheet Casting: The ceramic slurry is poured through the casting mouth of the sheet casting machine onto a PET film, forming a uniform layer of slurry. It is then dried in the hot air area (to remove most of the solvent) to obtain ceramic sheets, typically with a thickness between 10um and 30um.

Printing: Using screen printing, the internal electrode slurry is printed onto the ceramic sheet according to the process requirements.

Stacking: Ceramic sheets with printed internal electrodes are stacked together according to the designed alignment requirements to form an MLCC bar.

Sealing: Production of the upper and lower protective plates for the capacitor. During stacking, ceramic protective plates are added to the top and bottom surfaces to increase mechanical strength and improve insulation performance.

 

 

 

Lamination: The stacked MLCC bars are placed in a lamination bag, vacuum-sealed, and then pressure applied by isostatic pressing to ensure a tight and solid bond between the layers.

Cutting: The laminated MLCC bars are cut into separate capacitor blanks.

Deflashing: The capacitor blanks are placed on a sagger and subjected to high-temperature baking according to a certain temperature curve (the highest temperature is generally around 400°C) to remove organic materials such as binders from the chips. The deflashing process has two purposes: 1) Removing organic materials to avoid rapid vaporization during firing, which could cause product delamination and cracking, ensuring intact ceramic pieces with the desired shape. 2) Eliminating the reducing effect of binders during firing.

Sintering: The deflashed chips undergo high-temperature treatment, with sintering temperatures generally between 1140°C and 1340°C, to form ceramic bodies with high mechanical strength and excellent electrical properties.

Edge Rounding: The sintered ceramic capacitors are placed in a tumbling drum with water and abrasive media, where they undergo tumbling and planetary grinding to create a smooth surface, ensuring full exposure of the inner electrode and proper connection of the internal and external electrodes.

Termination: Terminal paste is coated on both ends of the chips with exposed internal electrodes, connecting the internal electrodes on the same side to form the external electrodes.

Firing Termination: The products are fired at low temperatures after termination to ensure proper connection of the internal and external electrodes and to provide a certain bonding strength between the end face and the ceramic body.

Termination Treatment: The surface treatment is an electroplating process, which refers to the process where metal ions (or complex ions) in the electrolyte are reduced to metal (or alloy) on the surface of the cathode under the action of direct current. In general, capacitors are plated with a layer of nickel on the terminal (Ag terminal or Cu terminal) and then a layer of tin.

Visual Inspection: Products with surface defects are selected using magnifiers or microscopes.

Testing: Capacitor products are tested for electrical performance aspects, including capacitance, dissipation factor, insulation resistance, resistance, and withstand voltage, with 100% measurement and classification to remove defective products.

Taping: Capacitors are packaged in paper tapes or plastic bags according to size and quantity requirements.

 

   

 

Applications of Ceramic Capacitors:

 

Consumer Electronics: From smartphones and tablets to smartwatches and wearables, ceramic capacitors power the gadgets we depend on daily.

Automotive Electronics: In modern vehicles, ceramic capacitors find application in engine control units, airbag systems, infotainment, and various safety features.

Telecommunications: In communication systems, ceramic capacitors are used in antennas, base stations, and signal processing circuits.

Industrial Automation: In industrial equipment and automation, ceramic capacitors are integral to motor drives, power inverters, robotics, and control systems.

Medical Devices: In the medical field, they are employed in medical imaging equipment, pacemakers, and diagnostic devices.

Ceramic capacitors play a vital role in inverter circuits, where they contribute to the overall performance and reliability of these electronic devices. Inverters are essential components in various applications, including power electronics, renewable energy systems, motor drives, uninterruptible power supplies (UPS), and more. Let's explore how ceramic capacitors are used in inverters and the benefits they provide:

Advanced Technologies and Innovations: As technology advances, so do ceramic capacitors. Cutting-edge innovations and improvements have been made to cater to the growing demands of the electronics industry.

 

The Future of Ceramic Capacitors:

 

As technology continues to advance, the future of ceramic capacitors looks promising. The ongoing drive for miniaturization, increased capacitance, enhanced reliability, and the integration of smart functionalities will pave the way for even more innovative ceramic capacitor solutions. These devices will continue to empower electronics design, enabling novel applications in diverse industries.

 UF Capacitors Ceramic Capacitor introduction: 

 

UF is a well-known and respected capacitors manufacturer and factory based in China, with a history dating back to 1995. We have earned the prestigious ISO9001 certification, reflecting our commitment to quality and excellence in the production of electronic components.
 

Our technical team is mainly composed of experienced and outstanding engineers from well-known companies such as Yagoe, Fenghua, Huak etc. Most of our team members hold graduate degrees. In our industry, we are at the forefront in both technology and management.

 

Our equipment is currently the most advanced and high-end in the country. In the production and manufacturing of MLCC (Multilayer Ceramic Capacitors), materials, formulations, processes, and equipment manufacturing are crucial. Among them, the extrusion equipment is the most critical, and our extrusion equipment comes from Japan's Hirano, which is a top-tier device comparable to Japan's Murata MURATA equipment. Purchasing such equipment requires a lead time of up to 2 years. Our extrusion equipment can produce at a speed of 80 meters per minute, ensuring highly efficient production capacity.

 

Our six-sided appearance inspection machine is from Japan's Iwata, and the four-parameter performance testing machine is produced by Japan's Dongrong, both of which boast exceptional performance. They can inspect 7,000 to 10,000 MLCCs per minute. As we use the best equipment from Japan, we ensure high reliability and can meet our customers' quality requirements and demands.

 

In summary, the MLCCs we produce are designed and manufactured to be on par with top brands like Murata and TDK, exhibiting excellent quality without any compromise.

 

As specialists in the field, we offer a diverse range of capacitors to cater to various industry needs. Our product lineup includes Ceramic Capacitors, Tantalum Capacitors, Plastic Film Capacitors, Aluminum Electrolytic Capacitors (SMD), DC Link Capacitors, Super Capacitors, Varistors, NTC Thermistors, and more. This extensive selection ensures that our customers can find the ideal capacitors to suit their specific applications.

 

With over two decades of experience in the industry, we have garnered valuable expertise and insights, enabling us to deliver top-notch products and services. Our success can be attributed to our commitment to comprehensive management practices, which ensures efficiency, effectiveness, and innovation at every level of our operations.

 

Quality is of utmost importance to us, and we implement stringent quality control systems throughout the manufacturing process. From carefully sourcing high-grade materials to employing advanced production techniques, we uphold the highest standards to ensure that our capacitors meet or exceed industry requirements.

 

Another key pillar of our success is our exceptional sales services. We prioritize customer satisfaction and go above and beyond to provide personalized support and assistance. Our dedicated sales team is always ready to address inquiries, offer technical guidance, and provide prompt solutions to meet our customers' diverse needs.

 

Among our wide range of electronic components, our Ceramic Capacitors stand out as highly sought-after products. These capacitors have gained a reputation for their reliability, durability, and outstanding performance in various electronic applications. We produce a diverse range of ceramic capacitors:

 

MLCC(Multi-layer Ceramic Capacitors), it’s a type of capacitor that comprises alternating layers of ceramic material and conductive metal electrodes. These layers create a sandwich-like structure, allowing for efficient energy storage and discharge, making the MLCC a vital component in electronic circuits.

 

Radial Multilayer Ceramic Capacitor，Our radial MLCCs are ideal for applications requiring stable capacitance in compact designs. Their innovative design allows for efficient energy storage in a space-constrained environment, making them suitable for consumer electronics, industrial equipment, and various other electronic systems.

 

Axial Lead Multilayer Ceramic Capacitor: designed to withstand high-voltage and high-temperature environments, our axial lead MLCCs are engineered to excel in demanding applications. They find extensive use in industrial automation, power electronics, and automotive systems, where reliable performance under harsh conditions is critical.

 

High Voltage Chip MLCC Capacitor: when it comes to elevated voltage requirements, our high voltage chip MLCC capacitors shine. These capacitors are engineered to withstand and perform exceptionally under higher voltages, making them crucial components in applications like power supplies, industrial machinery, and medical equipment.

 

High Voltage Disc Ceramic Capacitor: our high voltage disc ceramic capacitors ensure reliable operation in demanding voltage applications. They are utilized in systems that require high voltage handling, such as power distribution, energy storage, and renewable energy systems.

 

UF capacitors global Presence and Trusted Partnerships about ceramic capacitors

 

UF Capacitors takes pride in our extensive reach, serving customers across the globe.
Our electronic components are exported to numerous countries, including the USA, Canada, Brazil, Argentina, Mexico, South Africa, Tunisia, New Zealand, Australia, Germany, Italy, France, UK, Poland, Bulgaria, Spain, Portugal, Russia, Belarus, Ukraine, Korea, Vietnam, Singapore, Malaysia, Indonesia, India, Philippines, and Thailand. Our capacitors have earned the trust of prominent international companies such as GE, Philips, Honeywell, Bosch, and many others.

 

Compliance and Quality Assurance about ceramic capacitors

Ensuring our customers' satisfaction is paramount to us. All our capacitors are RoHS and REACH compliant, adhering to strict environmental and safety regulations. Our commitment to delivering top-notch quality is endorsed by our partnerships with reputable companies, including GE, Philips, Honeywell, and Bosch, who have acknowledged our reliable and trusted quality standards.

 

 

Unrivaled Advantages to choose UF capacitors ceramic capacitors

 

Our competitive edge stems from a combination of factors that set us apart in the market:

Reliable Quality: Recognized and approved by industry giants, our capacitors are a testament to their unmatched performance and reliability.

Rapid Lead Time: We understand the value of time in today's fast-paced market. We boast a fast lead time of 2 weeks to ensure swift delivery.

Competitive Pricing: Our pricing strategy is designed to offer cost-effective solutions without compromising on quality.

High Capacitance MLCC Stacking: Our MLCC capacitors can be stacked up to 600 layers, catering to applications with higher capacitance requirements.

Advanced Production Line: We have imported state-of-the-art production equipment from Japan, assuring the highest standards of quality and consistency.

 

 Why Choose UF Capacitors Ceramic Capacitors?

 

Ceramic capacitors have gained immense popularity in the electronics industry for several reasons:

 

Wide Application Range: From consumer electronics to industrial equipment, ceramic capacitors find applications in various electronic devices and circuits.

Temperature Stability: Ceramic capacitors offer excellent temperature stability, making them suitable for harsh environments.

High Capacitance-to-Volume Ratio: Their high capacitance-to-volume ratio allows for efficient energy storage in a compact form factor.

Low Equivalent Series Resistance (ESR): Ceramic capacitors exhibit low ESR, contributing to high-speed charging and discharging capabilities.

Reliability and Durability: With superior dielectric materials and reliable construction, ceramic capacitors boast extended operational lifespans.

 

At UF Capacitors, we take pride in our commitment to delivering top-quality ceramic capacitors that meet the diverse needs of our global clientele.

Whether it's a high-voltage MLCC or a compact disc ceramic capacitor, our capacitors are designed to exceed your expectations.

Partner with us for reliable, high-performance electronic components that power innovation and drive progress in various industries.