CL21B103KBCSFNC

The CL21B103KBCSFNC is a multilayer ceramic capacitor (MLCC) manufactured by Samsung, designed for general-purpose filtering, decoupling, and coupling applications in electronic circuits. This component belongs to the CL21 series, which represents Samsung's established line of compact film and ceramic capacitors widely used across consumer electronics, industrial control systems, and telecommunications equipment. Multilayer ceramic capacitors like this part are fundamental passive components found in virtually every modern electronic device. They serve critical functions including power supply filtering, signal coupling and decoupling, noise suppression, and frequency compensation in analog and mixed-signal circuits. The compact form factor makes them ideal for high-density PCB layouts where space is at a premium, particularly in applications ranging from portable electronics to industrial instrumentation. The CL21 series is characterized by its reliability and cost-effectiveness, making it a preferred choice for manufacturers balancing performance requirements with production economics. These capacitors utilize advanced ceramic dielectric materials and multilayer construction techniques that provide stable capacitance across operating conditions while maintaining low equivalent series resistance (ESR) for effective high-frequency filtering. Engineers typically specify Samsung's CL21 series MLCCs when designing circuits that require dependable capacitive performance without specialized requirements like extremely high voltage ratings or unusual temperature characteristics. The series offers a broad range of capacitance values and voltage ratings to accommodate diverse circuit designs. The standardized package and consistent performance across production batches make these capacitors suitable for both prototype development and high-volume manufacturing environments. Common applications include smartphone and tablet power management circuits, laptop charging systems, industrial power supplies, LED driver circuits, and various consumer appliance control boards. The capacitors provide essential support for voltage regulation, electromagnetic interference (EMI) suppression, and signal integrity in these systems. The decision to specify the exact CL21B103KBCSFNC part number versus alternative capacitors depends on matching the component's electrical and physical characteristics to specific circuit requirements. Designers consider factors such as required capacitance value, voltage rating, temperature stability class, package size, and compatibility with existing supply chains and assembly processes. Samsung's established manufacturing processes and quality standards make the CL21 series a trusted solution for engineers designing systems where component reliability directly impacts product performance and longevity.