CL21B103KAANFNC

The CL21B103KAANFNC is a multilayer ceramic capacitor (MLCC) manufactured by Samsung, designed for general-purpose applications across consumer electronics, industrial equipment, and telecommunications infrastructure. This component belongs to Samsung's CL series of ceramic capacitors, which are widely recognized for reliability and consistent performance in mainstream electronic applications. Multilayer ceramic capacitors serve as essential passive components in modern electronics, functioning to store electrical charge, filter noise, decouple power supplies, and stabilize voltage in circuits. The CL21B series specifically targets applications where a compact form factor and dependable performance are required without demanding specialized high-voltage or high-temperature characteristics. These capacitors are commonly found on printed circuit boards in consumer devices, industrial control systems, power management circuits, and signal processing applications. The designation structure of this part number provides insight into its specifications. The "CL21B" prefix indicates Samsung's standard MLCC family with a 0805 surface-mount package size (2.0mm x 1.25mm), which represents one of the most prevalent package formats in modern electronics manufacturing. This compact size allows for high-density PCB layouts while remaining cost-effective and straightforward to assemble using standard pick-and-place equipment. The "103" coding indicates the capacitance value and tolerance band within Samsung's classification system, placing this part in the standard capacitance range used for coupling, decoupling, and filtering applications. The "K" designation refers to the dielectric type and typical voltage rating class common to general-purpose MLCC applications. Engineers specify the CL21B103KAANFNC when designing circuits that require dependable mid-range capacitance values with the proven reliability of Samsung's manufacturing quality. The 0805 package strikes an important balance—it is small enough for space-constrained designs yet large enough to handle typical industrial and consumer application demands. This part represents an economical choice for high-volume production runs, as Samsung's extensive manufacturing capacity and the standardized nature of this component family ensure consistent availability and competitive pricing. The ceramic dielectric technology used in this series provides stable performance across typical operating temperature ranges encountered in standard industrial and commercial applications. This makes the CL21B103KAANFNC suitable for applications ranging from portable consumer electronics to industrial automation equipment, where environmental conditions remain within moderate ranges and cost control is a significant design consideration.