Datasheet

The capacitance change should be measured after 5
min. at each specified temperature stage.
(1) Temperature Compensating Type
The temperature coefficient is determined using the
capacitance measured in step 3 as a reference. When
cycling the temperature sequentially from step 1
through 5 (-55 to +125˚C) the capacitance should be
within the specified tolerance for the temperature
coefficient and capacitance change as shown in Table
A. The capacitance drift is calculated by dividing the
differences between the maximum and minimum
measured values in step 1, 3 and 5 by the cap. value in
step 3.
(2) High Dielectric Constant Type
The ranges of capacitance change compared with the
25˚C value over the temperature ranges as shown in
Table B should be within the specified ranges.
No.
9
Item
Capacitance
Temperature
Characteristics
Capacitance
Change
Capacitance
Drift
Specifications
Temperature Compensating Type High Dielectric Constant Type
Within T0.2% or T0.05pF
(whichever is larger)
Test Method
Temperature (˚C)
Capacitance
Item
Voltage
AC0.5 to 5V
(r.m.s.)
AC1T0.2V
(r.m.s.)
1000pF and
below
more than
1000pF
1
Operating Temperature
Range
-55 to +125˚C
Char. X7R : -55 to +125˚C
Char. Y5V : -30 to +85˚C –
2
See previous pages
Rated Voltage
The rated voltage is defined as the maximum voltage
which may be applied continuously to the capacitor.
When AC voltage is superimposed on DC voltage, V
P-P
or V
0-P
, whichever is larger, should be maintained
within the rated voltage range.
3 Appearance
No defects or abnormalities Visual inspection
4 Dimension and Marking
See previous pages Visual inspection, Vernier Caliper
5
Dielectric
Strength
Between
Terminals
No defects or abnormalities
The capacitors should not be damaged when DC
voltages of 300%* of the rated voltage are applied
between the terminals for 1 to 5 sec.
(Charge/Discharge current V 50mA)
*250% for char. X7R, Y5V
Body
Insulation
No defects or abnormalities
The capacitor is placed in a
container with metal balls of 1mm
diameter so that each terminal,
short-circuited, is kept
approximately 2mm from the balls
as shown in the figure, and 250%
of the rated DC voltage is
impressed for 1 to 5 sec. between
capacitor terminals and metal
balls. (Charge/Discharge current
V 50mA)
Approx. 2mm
Metal balls
6
Insulation
Resistance
Between
Terminals
C V 0.047µF : 10,000MΩ min.
C G 0.047µF : 500MΩ • µF min.
C : Nominal capacitance
The insulation resistance should be measured with a
DC voltage not exceeding the rated voltage at normal
temperature and humidity and within 2 min. of charging.
(Charge/Discharge current V 50mA)
7 Capacitance
Within the specified tolerance
8 Q/Dissipation Factor (D.F.)
30pF min. : Q U 1,000
30pF max. : Q U 400+20C
C : Nominal capacitance (pF)
Char. X7R : 0.025 max.
Char. Y5V : 0.05 max.
The capacitance, Q/D.F. should be measured at 25˚C
at the frequency and voltage shown in the table.
Within the specified tolerance
(Table A on last column)
Within the specified tolerance
(Table B on last column)
Temperature
Coefficient
Within the specified tolerance
(Table A on last column)
Continued on the following page.
Frequency
1T0.1MHz 1T0.1kHz
Step
1
2
3
4
5
-25±2
-55±3
-25±2
125±3
-25±2
Specifications and Test Methods
11
1
!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 specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
• This PDF catalog is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our
sales representatives or product engineers before ordering.
• This PDF catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
!Note
C49E.pdf
10.3.8