CL21B105KBFNNNF

The CL21B105KBFNNNF is a multilayer ceramic capacitor (MLCC) manufactured by Samsung, designed for general-purpose filtering and decoupling applications across a broad range of industrial and consumer electronic equipment. This component belongs to Samsung's CL series family, which represents a standard-performance class of capacitors widely used in mainstream electronics manufacturing. Multilayer ceramic capacitors like this model function as energy storage and filtering elements in circuits. They are commonly employed for power supply decoupling, signal coupling and decoupling, noise filtering, and EMI suppression in digital and analog circuits. The broad compatibility and moderate performance characteristics of this part make it suitable for applications where cost-effectiveness and reliability are balanced priorities rather than extreme performance demands. The designation "CL21B" in the part number indicates a specific case size and series classification within Samsung's MLCC portfolio. The "105K" portion of the code reveals key electrical characteristics that engineers use when selecting components: the base capacitance value and its tolerance class. The "BFNNNF" suffix provides additional information about the component's construction, termination style, and packaging configuration, indicating this is a surface-mount device optimized for automated assembly processes. Engineers might specify this exact part number when designing or maintaining equipment where Samsung MLCCs have been previously qualified, when the specific combination of case size, capacitance value, and voltage rating matches circuit requirements precisely, or when procurement specifications call for this manufacturer and series. The consistency of Samsung's CL series across production batches makes it a reliable choice for designs requiring predictable performance and long-term component availability. This capacitor is commonly found in consumer electronics, industrial control systems, telecommunications equipment, automotive electronics, and various other applications where standard filtering and decoupling functions are needed. The surface-mount package format allows for high-density PCB layouts and automated manufacturing, which is particularly valuable in modern electronics production. For applications requiring specialized performance characteristics such as extreme temperature ranges, high-frequency operation, particularly high or low capacitance values, or specific voltage ratings, engineers may need to evaluate alternative components from Samsung's extended MLCC lineup or other manufacturers. However, for general-purpose filtering and decoupling in mainstream electronic applications, this part represents a standard solution that balances performance, cost, and availability effectively.