CL21A475MQFNNNE

The CL21A475MQFNNNE is a multilayer ceramic capacitor (MLCC) manufactured by Samsung, designed for general-purpose filtering and decoupling applications in electronic circuits. This component belongs to the CL21 series, which represents a standard class of ceramic capacitors widely used across industrial, consumer, and automotive electronics applications. Multilayer ceramic capacitors are fundamental passive components found in nearly every modern electronic device. They function as energy storage elements and signal filtering components, removing unwanted noise from power supply lines and stabilizing voltage across integrated circuits and other sensitive electronics. The CL21 series specifically targets applications where reliable performance and cost-effectiveness are prioritized over extreme specifications. The "A" designation in the part number indicates this capacitor operates across a standard temperature range typical for industrial and commercial-grade electronics. The "MQ" notation references Samsung's specific dielectric material type, formulated to provide stable capacitance performance across normal operating conditions while maintaining reasonable size and cost characteristics. The "NNNE" suffix indicates the component's packaging and lead configuration. This particular variant uses a standard surface-mount package format commonly referenced in industrial specifications. The compact form factor makes it suitable for modern printed circuit board designs where space efficiency is important, while remaining compatible with standard pick-and-place manufacturing equipment used in volume production. Engineers typically specify this part number when designing power delivery networks, analog signal conditioning circuits, and general-purpose filtering stages. It appears frequently in applications including industrial control systems, power management modules, audio equipment, and general instrumentation. The standardized nature of the CL21 series makes it a reliable choice for production designs requiring consistent performance without specialized environmental characteristics. Compared to alternatives, this specific part offers Samsung's established quality and widespread availability. The CL21 series has been in production for many years, providing design continuity and reducing supply chain risk in long-term manufacturing programs. Engineers appreciate the predictable performance characteristics and compatibility with established PCB design practices. The multilayer construction of this ceramic capacitor provides high volumetric efficiency, allowing significant capacitance values in small packages. This makes it particularly valuable in densely packed circuit boards where space constraints are a practical concern. For applications requiring extended temperature ranges, specialized voltage ratings, or specific capacitance tolerance classes, alternative Samsung parts or other manufacturers' components may be more appropriate. However, for standard industrial applications where proven reliability and cost efficiency matter most, the CL21A475MQFNNNE serves as a dependable component choice.