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| GCM188R71H333KA55D Datasheet, PDF (62/67 Pages) Murata Manufacturing Co., Ltd. – Chip Monolithic Ceramic Capacitors for Automotive | |||
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!Note ⢠Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
⢠This catalog has only typical speciï¬cations. Therefore, please approve our product speciï¬cations or transact the approval sheet for product speciï¬cations before ordering.
C03E.pdf
May.17,2013
Notice
Continued from the preceding page.
7. Coating
! CRACK MAY BE CAUSED IN THE CAPACITOR DUE TO THE STRESS
of the thermal contraction of the resin during curing
process.
The stress is affected by the amount of resin and curing
contraction.
3ELECT A RESIN WITH LOW CURING CONTRACTION
The difference in the thermal expansion coefficient
BETWEEN A COATING RESIN OR A MOLDING RESIN AND THE
capacitor may cause the destruction and deterioration of
THE CAPACITOR SUCH AS A CRACK OR PEELING AND LEAD TO THE
deterioration of insulation resistance or dielectric
BREAKDOWN
3ELECT A RESIN FOR WHICH THE THERMAL EXPANSION COEFFICIENT
is as close to that of the capacitor as possible.
A silicone resin can be used as an under-coating to buffer
against the stress.
3ELECT A RESIN THAT IS LESS HYGROSCOPIC
Using hygroscopic resins under high humidity conditions
may cause the deterioration of the insulation resistance of
a capacitor.
An epoxy resin can be used as a less hygroscopic resin.
c Other
1. Transportation
1. The performance of a capacitor may be affected by the
conditions during transportation.
1-1. The capacitors shall be protected against
excessive temperature, humidity, and mechanical
force during transportation.
(1) Climatic condition
s LOW AIR TEMPERATURE
#
s CHANGE OF TEMPERATURE AIRAIR
# #
s LOW AIR PRESSURE K0A
s CHANGE OF AIR PRESSURE K0AMIN
-ECHANICAL CONDITION
4RANSPORTATION SHALL BE DONE IN SUCH A WAY THAT
the boxes are not deformed and forces are not
DIRECTLY PASSED ON TO THE INNER PACKAGING
$O NOT APPLY EXCESSIVE VIBRATION SHOCK OR
pressure to the capacitor.
7HEN EXCESSIVE MECHANICAL SHOCK OR PRESSURE
IS APPLIED TO A CAPACITOR CHIPPING OR CRACKING
may occur in the ceramic body of the capacitor.
7HEN THE SHARP EDGE OF AN AIR DRIVER A
SOLDERING IRON TWEEZERS A CHASSIS ETC
impacts strongly on the surface of the capacitor,
THE CAPACITOR MAY CRACK AND SHORT
CIRCUIT
$O NOT USE A CAPACITOR TO WHICH EXCESSIVE SHOCK
WAS APPLIED BY DROPPING ETC
A capacitor dropped accidentally during
processing may be damaged.
#HARACTERISTICS %VALUATION IN THE !CTUAL 3YSTEM
%VALUATE THE CAPACITOR IN THE ACTUAL SYSTEM TO CONFIRM
THAT THERE IS NO PROBLEM WITH THE PERFORMANCE AND
specification values in a finished product before using.
3INCE A VOLTAGE DEPENDENCY AND TEMPERATURE
dependency exists in the capacitance of high dielectric
type ceramic capacitors, the capacitance may change
depending on the operating conditions in the actual
system. Therefore, be sure to evaluate the various
CHARACTERISTICS SUCH AS THE LEAKAGE CURRENT AND NOISE
ABSORPTIVITY WHICH WILL AFFECT THE CAPACITANCE VALUE OF
the capacitor.
)N ADDITION VOLTAGES EXCEEDING THE PREDETERMINED
surge may be applied to the capacitor by the
INDUCTANCE IN THE ACTUAL SYSTEM %VALUATE THE SURGE
resistance in the actual system as required.
60
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