CL21B103KBANNND

The CL21B103KBANNND is a film capacitor manufactured by Samsung, belonging to the CL21 series of general-purpose capacitors. This component is designed for use in a wide range of consumer electronics, industrial equipment, and telecommunications applications where reliable energy storage and filtering are essential. Film capacitors like this one utilize a thin plastic film dielectric material, typically polypropylene or polyester, sandwiched between metal electrodes. This construction provides inherent safety characteristics including self-healing properties, which allow the capacitor to recover from minor electrical stresses without permanent degradation. The film-based design also delivers excellent frequency response and low equivalent series resistance, making these components particularly suitable for AC filtering, coupling, and decoupling applications. The CL21 series represents Samsung's established offering in the mid-range capacitor market, targeting applications that require good stability and cost-effectiveness over extreme performance demands. These capacitors are commonly found in power supplies, audio equipment, LED drivers, industrial control systems, and various consumer appliances. The series is known for delivering consistent performance across standard operating conditions without requiring exotic handling or storage procedures. The "B" designation in the part number indicates this is a standard leaded film capacitor housed in a compact radial package format. This package style makes it straightforward to integrate into through-hole PCB designs, a consideration that remains important in industrial and legacy equipment where surface-mount technology may not be standard or where through-hole construction offers mechanical advantages. Engineers typically specify Samsung CL21 series capacitors when seeking a balance between cost, reliability, and performance for mainstream industrial applications. The series offers predictable behavior across temperature ranges and frequency spans that cover most standard industrial operating conditions. The self-healing characteristics of film capacitors in this series also reduce field failure rates compared to some electrolytic alternatives, particularly in applications with voltage transients or ripple currents. The radial lead configuration allows for flexible PCB layout options and straightforward manual assembly or rework if needed in service environments. This accessibility has made the CL21 series a standard specification in maintenance departments and engineering shops where component replacement or prototyping work requires parts that integrate easily with existing equipment designs. Designers and procurement professionals typically choose this part number when existing designs call for CL21-series specifications, ensuring compatibility with established test data, field performance history, and board layouts across production runs and product generations.