AVX Corporation has released a new FLB series of medium power film capacitors. Packaged in a cylindrical aluminum can with terminals that enable direct, three-phase, internal wire connection, FLB series capacitors are comprised of metallized polypropylene dielectric imbued with a soft polyurethane resin.
FLB series capacitors feature a dual safety system consisting of an overpressure disconnector and self-healing technology, as well as exhibit high ripple current and extremely high dielectric strength in operating temperatures spanning -40°C to +80°C. Applications for the series include: power factor correction and output AC filtering in power converters, UPS systems, solar and wind inverters, and motor drives.
“FLB series three-phase film capacitors provide high contact reliability and long lifetimes and are rated for high voltages than other, comparable capacitor technologies, significantly extending the range of applications for which they”re ideal solutions,” explained Gilles Terzulli, Worldwide Marketing Manager, Power Film Capacitors, AVX.
These RoHS-compliant FLB series three-phase, medium power film capacitors are available in nine case sizes, six voltages spanning 230-690VAC, capacitance values spanning 3*20.3µF to 3*335µF, and three capacitance tolerances (±5%, ±10%, ±20%). They have been optimised for AC voltage performance and the series also exhibits high overvoltage capabilities as a result of its self-healing properties.
In addition, unlike aluminum electrolytic capacitors, FLB series polypropylene capacitors do not have a catastrophic failure mode, as film capacitors simply experience a parametric loss of capacitance of approximately 5%, which both negates the risk of short-circuiting and enables continued functionality. Lifetime for the series is 100,000 hours at rated voltage and 70°C.