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CWR11 Datasheet(PDF) 5 Page - Vishay Siliconix

Part No. CWR11
Description  Solid Tantalum Chip Capacitors TANTAMOUNT Military, Surface Mount MIL-PRF-55365/8 Qualified
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Maker  VISHAY [Vishay Siliconix]
Homepage  http://www.vishay.com
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CWR11 Datasheet(HTML) 5 Page - Vishay Siliconix

   
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51
CWR11
Vishay Sprague
Document Number 40011
Revision 31-Jan-05
For technical questions, contact tantalum@vishay.com
change shall not exceed ± 10%; the leakage
current shall not exceed 125% of the initial
requirement.
9.
Vibration Tests: Capacitors shall be subjected to
vibration tests in accordance with the following
criteria.
9.1
Capacitors shall be secured for test by means of a
rigid mounting using suitable brackets.
9.2
Low Frequency Vibration: Vibration shall consist
of simple harmonic motion having an amplitude of
0.03" [0.76mm] and a maximum total excursion of
0.06" [1.52mm], in a direction perpendicular to the
major axis of he capacitors.
9.2.1 Vibration frequency shall be varied uniformly
between the approximate limits of 10 Hz to 55 Hz
during a period of approximately one minute,
continuously for 1.5 hours.
9.2.2 An oscilloscope or other comparable means shall
be used in determining electrical intermittency
during the final 30 minutes of the test. The AC
voltage applied shall not exceed 2 volts rms.
9.2.3 Electrical tests shall show no evidence of
intermittent contacts, open circuits or short circuits
during these tests.
9.2.4 Following the low frequency vibration test,
capacitors shall meet the original requirements for
capacitance, dissipation factor and leakage current.
9.3
High Frequency Vibration: Vibration shall
consist of a simple harmonic motion having an
amplitude of 0.06" [1.52] ± 10% maximum total
excursion or 20 g peak whichever is less.
9.3.1 Vibration frequency shall be varied logarithmically
from 50 Hz to 2000 Hz and return to 50 Hz during
a cycle period of 20 minutes.
9.3.2 The vibration shall be applied for 4 hours in each
of 2 directions, parallel and perpendicular to the
major axis of the capacitors.
9.3.3 Rated DC voltage shall be applied during the
vibration cycling.
9.3.4 An oscilloscope or other comparable means shall
be used in determining electrical intermittency
during the last cycle. The AC voltage applied shall
not exceed 2 volts rms.
9.3.5 Electrical tests shall show no evidence of
intermittent contacts, open circuits or short circuits
during these tests.
9.3.6 There shall be no mechanical damage to these
capacitors as a result of these tests.
TYPICAL LEAKAGE CURRENT FACTOR RANGE
100
10
1.0
0.1
0.01
0.001
0
10
20
30
40
50
60
70
80
90
100
+ 125
°C
+ 85
°C
+ 55
°C
+ 25
°C
0
°C
- 55
°C
Percent of Rated Voltage
7.
Leakage Current: Capacitors shall be stabilized at
the rated temperature for 30 minutes. Rated voltage
shall be applied to capacitors for 5 minutes using a
steady source of power (such as a regulated power
supply) with a 1000 ohm resistor connected in series
with the capacitor under test to limit the charging
current. Leakage current shall then be measured.
Note that the leakage current varies with temperature and
applied voltage. See graph below for the appropriate
adjustment factor.
7.1
At + 25
°C, the leakage current shall not exceed the
value listed in the Standard Ratings Table.
7.2
At + 85
°C, the leakage current shall not exceed 10
times the value listed in the Standard Ratings Table.
7.3
At + 125
°C, the leakage current shall not exceed 12
times the value listed in the Standard Ratings Table.
8.
Life Test: Capacitors shall withstand rated DC
voltage applied at + 85°C or two-thirds rated voltage
applied at + 125°C for 2000 hours.
8.1
Following the life test, the dissipation factor shall
meet the initial requirement; the capacitance
PERFORMANCE CHARACTERISTICS (Continued)


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