®
POLYESTER (MYLAR) AND FOIL CAPACITORS
250 SERIES
leads are available.
Protective clear wrap is offered on
all wrap and fill units. Please add
.010” to maximum T and W dimen-
sion for protective clear wrap.
The potting material and endfills
of Electrocube’s capacitors meet or
exceed the flammability requirements
of UL94VO.
Dimensional variations for all
MFD values are available with the
same volume to meet your design
requirements.
The unique high performance and
long 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 extended
foil construction and standard tin-
coated copper-clad steel leads. Nickel,
copper, dumet and other special
SPECIFICATIONS
Temperature:
-55°C to +85°C at rated voltage; to +125°C
with 50% voltage derating.
TYPICAL DIELECTRIC CHARACTERISTIC CURVES
and 25°C for a period not to exceed 1 minute; current limited
to 5 mA.
Life Test:
Will withstand rated voltage for 250 hrs. at +125°C
with 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 per
MIL-C-19978.
Acceptance Criteria:
Measurement frequency for capacitance
Insulation Resistance:
At rated voltage or 500V, whichever
is less, units shall meet the minimum values below:
% DISSIPATION FACTOR
INSULATION RESISTANCE
(MEGOHMS TIMES MICROFARADS)
and dissipation factor shall be 1000 Hz for values to 1 mfd
and 120 Hz for values over 1 mfd.
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 necessitated
by 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.
®
3366 Pomona Blvd. • Pomona, CA 91768 • TEL: (909) 595-4037 • FAX: (909) 595-0186
e-mail: esales@electrocube.com • Internet: www.electrocube.com • (IR: 9/99)
% CAPACITANCE CHANGE
Dielectric Strength:
Will withstand 200% at rated voltage
®
POLYESTER (MYLAR) AND FOIL
251A SERIES
EPOXY CASE
RECTANGULAR
CONFIGURATION
For max. T and W dimensions, allow + .010”.
For max. L dimension, allow + .030”.
100 VOLT DC/67 VAC
200 VOLT DC/135 VAC
DIMENSIONS
MFD
.0010
.0012
.0015
.0018
.0022
.0027
.0033
.0039
.0047
.0056
.0068
.0082
.010
.012
.015
.018
.022
.027
.033
.039
.047
.056
.068
.082
.10
.12
.15
.18
.22
.27
.33
.39
.47
.56
.68
.82
1.0
1.5
2.0
PART NO.
251A1B102*
251A1B122*
251A1B152*
251A1B182*
251A1B222*
251A1B272*
251A1B332*
251A1B392*
251A1B472*
251A1B562*
251A1B682*
251A1B822*
251A1B103*
251A1B123*
251A1B153*
251A1B183*
251A1B223*
251A1B273*
251A1B333*
251A1B393*
251A1B473*
251A1B563*
251A1B683*
251A1B823*
251A1B104*
251A1B124*
251A1B154*
251A1B184*
251A1B224*
251A1B274*
251A1B334*
251A1B394*
251A1B474*
251A1B564*
251A1B684*
251A1B824*
251A1B105*
251A1B155*
251A1B205*
T
.16
.16
.16
.16
.16
.16
.16
.16
.16
.16
.16
.16
.16
.16
.17
.23
.23
.23
.23
.23
.23
.23
.29
.29
.29
.29
.29
.29
.29
.39
.39
.39
.56
.56
.56
.56
.56
.56
.56
W
.24
.24
.24
.24
.24
.24
.24
.24
.24
.24
.24
.24
.24
.24
.29
.36
.36
.36
.36
.36
.36
.36
.42
.42
.42
.42
.42
.42
.42
.54
.54
.54
.72
.72
.72
.72
.72
.72
.72
L
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.75
.75
.75
.75
.75
.75
.82
.82
1.06
1.06
1.04
1.04
1.04
.88
.88
1.04
1.04
1.56
1.56
1.90
(AWG)
LEAD
SIZE
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
18
18
DIMENSIONS
PART NO.
251A1C102*
251A1C122*
251A1C152*
251A1C182*
251A1C222*
251A1C272*
251A1C332*
251A1C392*
251A1C472*
251A1C562*
251A1C682*
251A1C822*
251A1C103*
251A1C123*
251A1C153*
251A1C183*
251A1C223*
251A1C273*
251A1C333*
251A1C393*
251A1C473*
251A1C563*
251A1C683*
251A1C823*
251A1C104*
251A1C124*
251A1C154*
251A1C184*
251A1C224*
251A1C274*
251A1C334*
251A1C394*
251A1C474*
251A1C564*
251A1C684*
251A1C824*
251A1C105*
251A1C155*
251A1C205*
T
.16
.16
.16
.16
.16
.16
.16
.16
.16
.16
.16
.16
.23
.23
.23
.23
.23
.23
.29
.29
.29
.29
.29
.29
.29
.29
.39
.39
.39
.56
.56
.56
.56
.56
.56
.56
.56
.56
-
W
.24
.24
.24
.24
.24
.24
.24
.24
.24
.24
.24
.24
.36
.36
.36
.36
.36
.36
.42
.42
.42
.42
.42
.42
.42
.42
.54
.54
.54
.72
.72
.72
.72
.72
.72
.72
.72
.72
-
L
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.55
.75
.75
.75
.75
.75
.75
.75
.82
.82
1.06
1.06
1.04
1.04
1.04
.88
.88
1.04
1.04
1.04
1.56
1.56
1.75
1.90
-
(AWG)
LEAD
SIZE
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
20
18
18
-
*Add tolerance designator to complete part number: F = ±1%, G = ±2%, J = ±5%, K = ±10%, M = ±20%
®
3366 Pomona Blvd. • Pomona, CA 91768 • TEL: (909) 595-4037 • FAX: (909) 595-0186
e-mail: esales@electrocube.com • Internet: www.electrocube.com • (IR: 9/99)
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