POLYESTER (MYLAR) AND FOIL CAPACITORS250 SERIES
® The unique high performance andlong life characteristics of polyester
account for the varied applications of
this miniature
capacitor series. A wide
range of sizes and configurations are
available. You can choose from axial-
lead wrap and fill, oval and round
shapes and rectangular epoxy case
with axial and radial leads. These
capacitors feature extendedfoil construction and standard tin-
coated copper-clad steel leads. Nickel,copper, dumet and other special
leads are available.Protective clear wrap is offered onall wrap and fill units. Please add
.010” to maximum T and W dimen-
sion for protective clear wrap.The potting material and endfillsof Electrocube’s
capacitors meet or
exceed the flammability requirements
of UL94VO.Dimensional variations for allMFD values are available with the
same volume to meet your design
requirements.
SPECIFICATIONS
Temperature:
-55°C to +85°C at rated voltage; to +125°Cwith 50% voltage derating.
TYPICAL DIELECTRIC CHARACTERISTIC CURVES
Dielectric Strength:
Will withstand 200% at rated voltage and 25°C for a period not to exceed 1 minute; current limitedto 5 mA.
Life Test:
Will withstand rated voltage for 250 hrs. at +125°Cwith not more than 1 failure in 12 permitted.
Dissipation Factor:
Shall not exceed 0.5% at 25°C.
Dielectric Absorption:
Shall not exceed 0.5% at 25°C perMIL-C-19978.
% CAPACITANCE CHANGE
Acceptance Criteria:
Measurement frequency for capacitanceand dissipation factor shall be 1000 Hz for values to 1 mfdand 120 Hz for values over 1 mfd.
Insulation Resistance:
At rated voltage or 500V, whicheveris less, units shall meet the minimum values below:
% DISSIPATION FACTOR NOTES: For information regarding insulating sleeves, mountings, special terminals,
non-standard leads, circuit connections and other hardware, please
consult factory.For styles and ratings not shown, or for unusual requirements necessitatedby special circuit applications (including higher IR or lower DF), consult
the factory direct. All Electrocube
film capacitors have endfills and tape that meet or exceed the flammability requirements of UL94V0. INSULATION RESISTANCE(MEGOHMS TIMES MICROFARADS) 1307 S. Myrtle Ave. • Monrovia, CA 91016 • TEL: (626) 301-0122 • FAX: (626) 357-8099 e-mail: sales@electrocube.com • Internet: www.electrocube.com • (IR: 9/99) ®
