Overview and Benefits of KEMET COG Dielectric SMD MLCCs
KEMET Electronics Corporation introduces their Surface Mount Multilayer Ceramic Chip Capacitors (SMD MLCCs) with COG dielectric, designed for commercial applications. These capacitors are characterized by a stable COG (NP0) dielectric material which falls under the Class I category, according to the Electronics Components, Assemblies & Materials Association (EIA). This classification indicates that the capacitors are suitable for resonant circuits and applications demanding consistent Q factors and stable capacitance characteristics. The COG dielectric ensures no capacitance change over time or voltage and boasts minimal temperature-related capacitance fluctuation, maintaining performance within a range of +30 ppm/°C in operating temperatures from -55°C to +125°C.
Key benefits include a broad operating temperature range, lead-free RoHS and REACH compliance, and availability in various case sizes and voltage ratings ranging from 10 V to 250 V. Capacitance values span from 0.5 pF to 0.47 µF, with numerous tolerance options available. The capacitors offer no piezoelectric noise, extremely low ESR (Equivalent Series Resistance), ESL (Equivalent Series Inductance), high thermal stability, and a high ripple current capability.
Ordering Information and Packaging Options
The ordering information section provides details for selecting the correct specification based on case size, capacitance value, tolerance, voltage rating, and termination finish. Notably, a flexible termination option and additional capacitance tolerance offerings are available upon request. A unique ordering code (C-Spec) identifies the desired specification, and standard packaging types are offered in bulk bag or reel format, with unmarked or laser-marked options.
Additional Benefits and Applications
KEMET’s SMD MLCCs with COG dielectric are ideal for applications including timing, tuning, low-loss circuits, high-current applications, decoupling, bypassing, filtering, transient voltage suppression, blocking, and energy storage. These capacitors sustain their capacitance with rated DC voltage application and temperature changes, have no capacitance decay with time, and are non-polar, easing installation concerns. They are also available with a standard 100% pure matte tin-plated termination finish for optimal solderability, with a SnPb plated finish available on request.
Qualification/Certification and Compliance
The SMD MLCCs provided by KEMET are commercial-grade products that adhere to internal qualifications referenced in Performance and Reliability tables. Environmental compliance is assured as the capacitors are lead-free, RoHS, and REACH compliant without exemptions.
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