KEMET High CV Multilayer Ceramic Capacitors (MLCCs)
KEMET High CV Multilayer Ceramic Capacitors (MLCCs) are a preferred capacitance solution, offering tremendous performance, reliability, and cost advantages for circuit designers. Ceramics are non-polar devices that offer unsurpassed volumetric efficiency, delivering high capacitance in small package sizes. Available in a wide range of sizes, KEMET High CV MLCCs offer very low equivalent series resistance (ESR), exhibit excellent high-frequency characteristics, and are very reliable. MLCCs are monolithic devices that consist of laminated layers of specially formulated ceramic dielectric materials interspersed with a metal electrode system. The layered formation is then fired at a high temperature to produce a sintered and volumetrically efficient capacitance device. A conductive termination barrier system is integrated into the exposed ends of the chip to complete the connection.
Simulation Tool
KEMET K-SIM Simulation Tool
Simulation tool that aids design engineers in analyzing the performance of capacitors.
Class-I: C0G & U2J Temperature Compensating / Low Loss
What is Class I? Sometimes referred to as NP0, C0G are considered "ultra-stable." Temperature coefficient of capacitance (TCC) for C0G is ±30ppm/°C over the rated temperature range. The capacitance of C0G will only vary slightly due to change in temperature.
KEMET C0G dielectric features a +125°C maximum operating temperature and is considered stable. The Electronics Components, Assemblies & Materials Association (EIA) characterizes C0G dielectric as a Class I material. Components of this classification are temperature compensating and are suited for resonant circuit applications or those where Q and stability of capacitance characteristics are required. C0G exhibits no change in capacitance with respect to time and voltage and boasts a negligible change in capacitance with reference to ambient temperature. Capacitance change is limited to ±30ppm/ºC from -55°C to +125°C.
KEMET U2J Dielectric MLCCs offer up to 120% higher capacitance than the C0G portfolio in given case sizes. KEMET U2J surface mount MLCC series features dielectric material that falls in the Class I dielectric category based on its performance with respect to temperature. Cap change is limited to -750±120ppm/ºC from -55ºC to +125ºC. KEMET U2J caps extend the available capacitance range of KEMET Class I MLCCs to values previously only in Class II dielectric materials, such as X7R, X5R, Y5V, and Z5U. U2J is not sensitive to DC Bias as compared to Class II dielectric materials and retains over 99% of nominal capacitance at full rated voltage.
Class-II: X8R, X7R, X5R, & X8L Temperature Stable
KEMET X5R dielectric features an +85°C maximum operating temperature and is considered "semi-stable." EIA characterizes X5R dielectric as a Class II material. Components of this classification are fixed, ceramic dielectric capacitors suited for bypass and decoupling applications or for frequency discriminating circuits where Q and stability of capacitance characteristics are not critical. X5R exhibits a predictable change in capacitance with respect to time and voltage and boasts a minimal change in capacitance with reference to ambient temperature.
X7R dielectric features a +125°C maximum operating temperature and is considered "temperature stable." EIA characterizes X7R dielectric as a Class II material. Components of this classification are fixed, ceramic dielectric capacitors suited for bypass and decoupling applications or for frequency discriminating circuits where Q and stability of capacitance characteristics are not critical. X7R exhibits a predictable change in capacitance with respect to time and voltage and boasts a minimal change in capacitance with reference to ambient temperature.
X8L dielectric features a +150°C maximum operating temperature and is considered "general purpose high temperature." These components are fixed, ceramic dielectric capacitors suited for high temperature bypass and decoupling applications or frequency discriminating circuits where Q and stability of capacitance characteristics are not critical. X8L exhibits a predictable change in capacitance with respect to time and voltage and boasts a minimal change in capacitance with reference to ambient temperature up to +125°C.
Ultra-Stable X8R dielectric features a +150°C maximum operating temperature, offering the latest in high temperature dielectric technology and reliability for extreme temperature applications.
Class-III: Z5U & Y5V General Purpose
KEMET Y5V dielectric features an +85°C maximum operating temperature and is considered "general-purpose." EIA characterizes Z5U dielectric as a Class III material. Components of this classification are fixed, ceramic dielectric capacitors suited for bypass and decoupling or other applications in which dielectric losses, high insulation resistance and capacitance stability are not of major importance. Y5V exhibits a predictable change in capacitance with respect to time and voltage and displays wide variations in capacitance with reference to ambient temperature. Capacitance change is limited to +22%, -82% from -30°C to +85°C.
Z5U dielectric features an +85°C maximum operating temperature and is considered "general-purpose." EIA characterizes Z5U dielectric as a Class III material. Components of this classification are fixed, ceramic dielectric capacitors suited for bypass and decoupling or other applications in which dielectric losses, high insulation resistance and capacitance stability are not of major importance. Z5U exhibits a predictable change in capacitance with respect to time and voltage and displays wide variations in capacitance with reference to ambient temperature. Capacitance change is limited to +22%, -56% from +10°C to +85°C.
Capacitance Over Temperature
The operating temperature is one factor that has a significant influence on the selection of capacitors for circuit functions such as filtering, decoupling, transient-voltage-suppression and energy storage. Care must be taken to ensure that the ceramic capacitor provides the desired capacitance at the intended operating temperature. Depending on the dielectric material, the capacitance can reduce at high temperatures leading to unpredictable system performance.
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YAGEO High CV MLCCs
High capacitance multilayer ceramic capacitors that function in decoupling and smoothing operations.