Protected Metalized Polypropylene Film Capacitors Target UPS Systems and AC Filtering Applications
Design incorporates fuse protection, UL 810 Approved for Fail-Safe Operation
Cornell Dubilier announces the availability of its newest Metalized Polypropylene Film Capacitors for UPS, AC power supplies and general AC filtering applications. The 951C and 953B Series offer strong performance for filtering in applications where high ripple currents are encountered and benign end-of-life failure mode is essential. The 951C has a cylindrical body with axial leads, while the 953B has a rugged radial box form factor.
Both capacitors offer a fused, segmented metallization pattern, providing significant circuit protection. UL 810 approval assures fail-safe operation under fault conditions. The metallization pattern is deposited on a low-loss, high-grade polypropylene dielectric. The built-in fuse-links limit capacitance loss to a small segment within the capacitor. This is in contrast to the larger areas of uncontrolled capacitance loss observed with non-segmented types. This capability is not usually available for board-mounted capacitors.
The axial-leaded 951C Series is offered in values ranging from 0.825 to 40µF, while the 953B spans 2.5 to 50µF. Voltage ratings in both series are available at 160, 250 and 275Vac. Both types offer -40 to +85° C performance and meet the requirements of UL 94V-0 for flammability.
With a 10,000 hour service-life expectancy without derating, series 951C and 953B capacitors will excel at providing reliable filtering and smoothing for today's demanding applications in UPS systems, AC power supplies and more.
UPS Systems, AC output filtering
The 381-383LL snap-in series, designated with an expected life of 8,000 hours at full-rated conditions, demonstrates superb stability in capacitance and DC leakage current over time on test. The snap-in series is targeted for use in critical applications where long life and reliability are paramount.
The series improvements include UL recognized construction and an internal pressure interrupter system that has passed the rigors of UL testing to ensure fail-open performance under high current fault conditions.
A single ULP series capacitor saves space by replacing large arrays of SMT capacitors!