CL21B475KAFNNNG is a 390-volt, 4700-microfarad, electrolytic capacitor manufactured by Samsung. It is a long life, polar electrolytic capacitor rated at a temperature range of -25°C to +85°C. It is oval shaped, has a diameter of 21 mm, and is radial leaded. It is suitable for a wide range of applications, including power supply and board level filtering, audio equipment and instrumentation, input/output filters, switching regulators and lighting ballasts.