CL21A105KPFNNNE

The CL21A105KPFNNNE is a multilayer ceramic capacitor (MLCC) manufactured by Samsung, representing a reliable choice for general-purpose filtering and coupling applications across industrial and consumer electronics. This component belongs to Samsung's CL series of ceramic capacitors, which are widely specified in circuit designs requiring stable performance in compact form factors. Multilayer ceramic capacitors like this model function as energy storage and signal filtering elements in electronic circuits. They are essential components in power supply filtering, decoupling, noise suppression, and AC coupling applications. The compact package size makes them ideal for space-constrained designs while maintaining reasonable capacitance values for their footprint. Engineers select ceramic capacitors when cost-effectiveness and miniaturization are priorities, as these components offer excellent volumetric efficiency compared to alternative technologies. The part number itself encodes important design information. The "CL21A" designation indicates this is a surface-mount ceramic capacitor in a specific package size commonly used in modern PCB assemblies. The "105K" portion of the designator typically relates to the capacitance value and tolerance class, while the "PFNNNE" suffix provides additional manufacturing and specification details specific to Samsung's coding system. Samsung's CL series capacitors are engineered for applications requiring stable temperature characteristics and good electrical performance across standard industrial operating ranges. These capacitors are frequently found in consumer electronics, industrial control boards, telecommunications equipment, LED lighting circuits, and various switching power supply designs. Their widespread adoption reflects proven reliability in high-volume manufacturing environments. The primary reasons an engineer might specify this exact Samsung part include established supply chain relationships, proven compatibility with manufacturing processes, consistent electrical behavior that simplifies design verification, and the component's track record in similar applications. Additionally, Samsung's global distribution network and manufacturing scale often provide competitive availability compared to lesser-known alternatives. Ceramic capacitors in this series typically offer good frequency response characteristics, making them suitable for both DC filtering and AC signal applications. They are RoHS-compliant and compatible with standard lead-free soldering processes, meeting modern environmental and manufacturing regulations. For designers working on industrial equipment, consumer devices, or any application requiring dependable energy storage and filtering in a compact footprint, this Samsung component represents a standard choice backed by years of field-proven performance. The part's specification aligns with typical requirements for general-purpose ceramic capacitor applications where precision and exotic characteristics are not required, but consistent performance and reliability are essential.