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0805 ceramic capacitors Mlcc come in different types, and these are based on their dielectric materials and structure. This is a size designation in the EIA system, meaning the capacitor will have a measurement of about 0.08 × 0.05 inches.
C0G (NP0) Capacitors)
The C0G dielectric is known for having capacitance stability over a wide range of temperatures, voltages, and time. Every C0G capacitor can have a capacitance that ranges from 1 picofarad (pF) to 1000 pF and a temperature fluctuation of about -55°C to +125°C. C0G does not only provide reliability; these are also because it provides wide usage in tuning circuits, oscillators, and filtering.
Ceramic X7R Capacitors
X7R capacitors are general-purpose capacitors suitable for applications that require larger capacitance and dimensional stability at moderate fluctuations in temperature. It can function effectively within a temperature range of -55°C to +125°C, with a capacitance value that goes up to 10 microfarads (μF). X7R capacitors possess a capacitance that can decrease with the increase in applied voltage; however, they still can be used in power supplies, decoupling, and other filtering applications.
X5R Capacitors
The X5R capacitors are also meant for general use, even if they are not more stable thermally than C7R capacitors. Their capacitance value is highly stable within a temperature range of -55°C to +85°C. It also comes with a voltage rating that can reach 6.3 V to 50 V. The capacitance of the capacitors will reduce under higher voltage, but they will be useful in applications where the dielectric properties do not have to be so stable. These applications include filter circuits and decoupling, where capacitance is important but affordable.
Ceramic Capacitors C2G (X0Y)
C2G or C0Y ceramic capacitors are suitable for use in applications that require stable capacitance under the common voltage and temperature conditions. The typical temperature range for X0Y is -25°C to +85°C, and its voltage rating can be up to 100 V. C0Y capacitors are usually used for applications that require high precision in capacitance, where the dielectric material can be used for tuning, timing, and stabilization in oscillators and filters.
High-Dielectric Constant (HDC) MLCCs
In device types of 0805 ceramic capacitors, the HDC MLCCs will utilize a special type of dielectric ceramic made from barium titanate and aimed at providing higher capacitance with smaller physical dimensions. The features enable these capacitors to pack a larger amount of capacitance into a very small size and make them especially useful in modern electronic goods that require miniaturization and efficiency.
Capacitance Range
These types of ceramic capacitors are designed in a very compact form, designated by 0805, which refers to its dimensions in imperial measure, 0.08 × 0.05 inches. Depending on the dielectric type, 0805 ceramic MLCCs can have a capacitance that goes up to 10 μF and above. Such a range makes them extremely usable in a variety of applications, from basic filtering to more complex timing circuits.
Voltage Rating
Voltage rating is one of the important features to determine the maximum operating voltage of a capacitor before which it may need to fail. For 0805 MLCCs, the voltage ratings can be as low as 6.3 V and can extend to high values such as 100 V. Selecting a capacitor with a voltage rating that exceeds the operating voltage in the given circuit is necessary to guard against breakdown and failure.
Temperature Coefficient and Stability
Ceramic capacitors use different types of dielectrics, which determine their behavior with a temperature variation or coefficient of temperature. For instance, C0G (NP0) dielectrics have excellent thermal stability and do not change in capacitance when subjected to temperatures that range from -55°C to +125°C. On the other hand, X5R and X7R have fair thermal stability, and their capacitance might change with temperature fluctuations, voltage, and aging. These dielectrics are more affordable but still usable in applications where the capacitance value should remain active in normal operating conditions.
Size and Tolerance
Capacitors in the 0805 size have a relatively small footpring, making them suitable for modern, densely packed electronic circuits. The standard capacitance tolerance for these capacitors can be as reliable as ±5% to ±20%. In cases where precision is very vital, it is necessary to choose a capacitor with a tighter tolerance such as C0G dielectrics.
Applications
0805 ceramic capacitors are versatile components used in a wide range of applications. Electronics industries use them for power electronics, smartphones, tablets, and more, for circuit stabilization, filtering, and decoupling. 0805 capacitors are also used for automotive applications and in other industrial devices, where reliability and performance under harsh conditions are critical.
This section will highlight the common types of 0805 ceramic capacitor mlcc customization options.
Capacitance Value
A wide range of capacitance values is available for 0805 ceramic MLCCs depending on the application requirements and specific needs of the customers. Capacitance can be customized to range from a few picofarads to several microfarads, thus making it possible to use it for low filtering frequencies and high-tuned circuits.
Voltage Rating
In 0805 ceramics of MLCCs, the voltage rating can also be fully customized. Standard voltage ratings are usually between 6.3 V and 100 V; however, special applications will involve higher or lower voltage. Adjusting the voltage rating according to the application’s requirement will improve safety and capacitor reliability while getting rid of the risk of breakdown.
Dielectric Material
The choice of a dielectric material to manufacture 0805 ceramic MLCC may vary depending on the stability and performance factor required in the capacitor. C0G, X5R, and X7R dielectrics can be customized depending on the thermal characteristics and the intended application. Other applications may demand less thermal variation and higher stability, and others would prioritize a decline in cost-performance ratio over a great acceleration type of capacitance.
Tolerance
Capacitance tolerance can be modified to suit an application’s precision requirements. The common tolerance types for 0805 ceramic MLCCs are ±5%, ±10%, and ±20%. To critical applications like precision timing circuits, tighter tolerances can be required. In other situations, normal operating conditions will permit wider tolerances.
Temperature Coefficient
Temperature co-efficiency can also be customized to suit application requirements that change with temperature. For example, C0G has a great stability with a change in temperature, while X5R and X7R have greater capacitance values but with a decline in stability as the temperature changes. Selection of the temperature coefficient that fits the application will ensure that stability and performance are at higher levels for a wide range of operating temperatures.
Packaging Options
Customization to packaging may also be necessary in terms of customer convenience during manufacturing. 0805 MLCCs can be provided in tape and reel formats for automated pick and placement. Capacitors can also be provided in bulk bags or trays depending on manual assembly processes.
A1: The "0805" designation refers to the capacitor's size, measuring 0.08 x 0.05 inches (2.0 x 1.25 mm). It is one of the standard EIA sizes for surface mount components.
A2: Common dielectrics for 0805 ceramic MLCCs include C0G (NP0), X5R, and X7R. C0G offers high stability, while X5R and X7R provide greater capacitance but with reduced stability under temperature variations.
A3: X7R and X5R capacitors experience capacitance variations with temperature changes. While X7R is stable from -55°C to 125°C, X5R is effective up to 85°C. Beyond these limits, capacitance may decrease significantly.
A4: Yes, 0805 ceramic MLCCs can be customized to have higher voltage ratings, reaching up to 100 volts. This makes them suitable for various applications, including power supply circuits.
A5: The 0805 ceramic capacitor MLCC stabilizes voltage, smoothens power supply, and filters out noise. They are widely used in consumer electronics, automotive, and industrial applications due to their reliability and compact size.
