INTRODUCTION CL21-B are non-inductively wound with metallized polyester film as the dielectric/electrode with copper-clad steel leads and encapsulated in a plastic case sealed with epoxy resin. APPLICATIONS Widely used in fillter,noise suppression and low pulse circuits Suitable for blocking,by-pass and coupling of DC and single to VHF range FEATURE Box type provides the identical outer appearance Wide capacitance range,small size Long life due to self-healing effect