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Cornell Dubilier introduces 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.

951C & 953B Metallized Polypropylene Film Capacitors

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 40 μF, while the 953B spans 2.5 to 50 μF. Voltage ratings in both series are available at 160, 250 and 275 Vac. 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.


951C Datasheet

953B Datasheet

A Little about Cornell Dubilier

Since its founding in 1909, CDE has been dedicated to advancing capacitor technology for new applications. The company combines innovative products with engineering expertise to provide reliable component solutions for inverters, wind and solar power, electric vehicles, power supplies, motor drives, HVAC, motors, welding, aerospace, telecom, medical equipment and UPS systems.

A global company, Cornell Dubilier has ISO-9001 certified manufacturing and distribution facilities in Liberty, SC; New Bedford, MA; Mexicali, Mexico; and Hong Kong.

DMTL were appointed Cornell Dubilier (CDE) UK Design Distributors in 2015.