CL05B221KB5NNNC

The CL05B221KB5NNNC is a multilayer ceramic capacitor (MLCC) manufactured by Samsung. This component belongs to the CL05 series, which represents Samsung's 0402 metric package size offering—a common form factor for surface-mount applications where space constraints are critical. This compact package measures approximately 1.0mm × 0.5mm, making it ideal for high-density PCB layouts found in modern electronics. Multilayer ceramic capacitors like this part are fundamental passive components used across virtually all electronic equipment. They function to store electrical charge, filter signals, decouple power supplies, and stabilize circuit behavior. The MLCC technology offers excellent reliability, long shelf life, and stable performance across typical operating temperature ranges. These capacitors are non-polarized, allowing installation in either direction on the circuit board. The specific designation "221K" within this part number indicates a nominal capacitance value in the lower picofarad range, typical for high-frequency filtering, coupling, and bypass applications. Samsung's CL05 series is widely specified in consumer electronics, telecommunications equipment, automotive control modules, industrial instrumentation, and portable medical devices. Engineers commonly encounter these components in signal conditioning circuits, power distribution networks, RF applications, and digital logic support roles. The "B" designation in the part number typically indicates Samsung's standard dielectric formulation, designed to balance capacitance stability with temperature performance. This makes the CL05B221KB5NNNC suitable for general-purpose applications where moderate temperature stability is required without special performance demands. Engineers specify this exact part number versus alternatives for several reasons. First, standardization on established part numbers reduces design complexity and supports supply chain consistency. Second, Samsung's CL05 series maintains consistent quality and manufacturing processes across high-volume production runs. Third, the specific dielectric and capacitance value combination addresses particular circuit requirements that alternative values or formulations would not satisfy. Additionally, 0402 package parts like this represent an optimal balance between miniaturization and ease of assembly for most manufacturing processes. For applications requiring this component, engineers should consult the relevant manufacturer documentation for complete electrical specifications, rated voltage, operating temperature range, and detailed performance characteristics. The compact size and established use of the CL05 series in demanding applications ensure this component integrates reliably into modern electronic designs where space efficiency and stable circuit performance are priorities.