CL21A106MQFNNNE

The CL21A106MQFNNNE is a multilayer ceramic capacitor (MLCC) manufactured by Samsung, designed for general-purpose energy storage and filtering applications in electronic circuits. This component belongs to Samsung's CL series of ceramic capacitors, which are widely specified in consumer electronics, industrial equipment, telecommunications infrastructure, and automotive applications. Multilayer ceramic capacitors are among the most commonly used passive components in modern electronics. They function to store electrical energy, filter noise from power supply lines, decouple signals, and stabilize voltage across integrated circuits and other sensitive components. The CL series represents a mid-range performance class suitable for standard industrial and commercial applications where reliability and cost-effectiveness are primary concerns. The "21" designation in the part number indicates this capacitor uses a 0805 surface-mount package, one of the most prevalent sizes in modern PCB assembly. This compact package allows for high-density circuit board layouts while remaining practical for both automated and manual assembly processes. The 0805 footprint balances space efficiency with ease of handling and rework. Samsung's CL series capacitors are manufactured using advanced ceramic dielectric materials and multi-layer construction techniques. These devices offer stable performance across typical industrial temperature ranges and are designed to meet standard industry reliability requirements. They are particularly valued in applications requiring stable capacitance over time and across varying operating conditions. Engineers typically specify this exact part number when designing circuits that require a general-purpose MLCC in the 0805 package with Samsung as the preferred supplier. Common reasons for this choice include established design qualification with Samsung components, preference for Samsung's quality consistency, existing supplier relationships, or design standardization across product lines. The CL series' broad availability and established track record in production environments make it a practical default choice for applications without extreme performance demands. This capacitor would commonly appear in power distribution networks, analog signal conditioning circuits, switching power supplies, audio equipment, industrial control boards, and embedded systems. Its reliability and broad operating envelope make it suitable for applications ranging from consumer-grade devices to more demanding industrial environments. Whether upgrading an existing design, supporting legacy equipment, or qualifying a new supplier configuration, the CL21A106MQFNNNE serves as a fundamental building block in circuit design where proven ceramic capacitor performance is required.