High Capacitance for General Use KRM Series Specifications and Test Methods
No.
Item
Operating
Temperature Range
Appearance
Dimensions
Specifications
X5R Char.: -55 to +85°C
X6S Char.: -55 to +105°C
X7R Char.: -55 to +125°C
No defects or abnormalities
Within the specified dimensions
Test Method
1
2
3
Reference temperature: 25°C
Visual inspection
Using calipers and micrometers
No failure should be observed when voltage in the table is
applied between the terminations for 1 to 5 sec., provided the
charge/discharge current is less than 50mA.
4
Dielectric Strength
No defects or abnormalities
Rated Voltage
DC16V, DC25V, DC35V,
DC50V, DC63V
DC100V, DC250V
DC630V
DC1000V
Test Voltage
250% of the reted voltage
200% of the reted voltage
150% of the reted voltage
120% of the reted voltage
5
Insulation Resistance
(I.R.)
[KRM21, KRM31]
W.V.: 16V/25V/35V
: More than 50MΩ · μF
W.V.: 50V/100V
: More than 500MΩ · μF
[KRM55]
More than 100MΩ · μF
Within the specified tolerance
[KRM21, KRM31]
W.V.: 16V/25V/35V
: 0.15 max.
W.V.: 50V
: 0.025 max.
W.V.: 100V
: 0.05 max.
[KRM55]
0.025 max.
The insulation resistance should be measured with Rated
Voltage and within 60±5 sec. of charging.
6
Capacitance
The capacitance/D.F. should be measured at reference
temperature at the meaning frequency and voltage shown in
the table.
Nominal
Capacitance
C>10μF
CV10μF
Measuring
Frequency
120±24Hz
1±0.2kHz
Measuring
Voltage
AC0.5±0.1V(r.m.s.)
AC1.0±0.2V(r.m.s.)
7
Dissipation
Factor (D.F.)
The capacitance measurement should be made at each step
specified in the Table.
Step
1
2
3
4
5
Temperature (°C)
25±2
Min. Operating Temp. ±3
25±2
Max. Operating Temp. ±2
25±2
8
Capacitance
Temperature
Characteristics
X5R Char.: Within ±15% (Temp. Range: -55 to +85°C)
X6S Char.: Within ±22% (Temp. Range: -55 to +105°C)
X7R Char.: Within ±15% (Temp. Range: -55 to +125°C)
Perform a heat treatment at 150+0/–10°C for 60±5 min. and
then let sit for 24±2 hrs. at room condition. (*1)
A static load of 10N using a pressure rod should be applied to
the center in the direction of the arrow and held for 10 s.
Pressure
Pressure Rod
9
Strength of Metal
Terminal
Termination not to be broken or loosened
R 0.5
0.5L
10
Adhesive Strength
of Termination
No removal of the terminations or other defect should occur.
Solder the capacitor to the testing jig (glass epoxy board) shown
in Fig. 1.
Then apply 10N force in the direction of the arrow.
The soldering should be done using the reflow method and
should be conducted with care so that the soldering is uniform
and free defects such as heat shock.
10N, 10T1s
Glass Epoxy Board
Fig. 1
(*1) "Room condition" Temperature: 15 to 35°C, Relative humidity: 45 to 75%, Atmospheric pressure: 86 to 106kPa
Continued on the following page.
High Capacitance for General Use KRM Series Specifications and Test Methods
Continued from the preceding page.
No defects or abnormalities
Within the specified tolerance
11
D.F.
In accordance with item No.7
Solder the capacitor to the test jig (glass epoxy board).
The capacitor should be subjected to a simple harmonic motion
having a total amplitude of 1.5mm, the frequency being varied
uniformly between the approximate limits of 10 and 55Hz.
The frequency range, from 10 to 55Hz and return to 10Hz,
should be traversed in approximately 1 min. This motion should
be applied for a period of 2 hrs. in each of 3 mutually
perpendicular directions (total of 6 hrs.).
Solder Resist
Cu
Glass Epoxy Board
No marking defects
b
ø4.5
d
c
a
40
Solder the capacitor to the testing jig (glass epoxy board) shown
in Fig. 2.
Then apply a force in the direction shown in Fig. 3.
The soldering should be done using the reflow method and
should be conducted with care so that the soldering is uniform
and free of defects such as heat shock.
20 50
12
100
t : 1.6
(in mm)
R4
speed: 1.0mm/s
Pressurize
KRM21
KRM31
KRM55
1.2
2.2
4.5
4.0
5.0
8.0
Fig. 2
1.65
1.65
5.6
1.0
1.0
1.0
Flexure:
V5
Capacitance meter
45
45
(in mm)
Fig. 3
Reflow Soldering: Peak 260+0/-5°C
The area of soldering 230°C min., 20 to 40 s
Let sit for 24±2 h at room condition,* then measure.
Perform the heat treatment at 150+0/-10°C for 60±5 min. and
then let sit for 24±2 h at room condition. (*1)
13
The metal surface is soldered well
300°C
20 to 40 s
200°C
180°C
150°C
100°C
60 to 120 s
260+0/-5°C
230°C min.
No marking defects
Within ±10%
14
D.F.
In accordance with item No.7
In accordance with item No.5
In accordance with item No.4
See item 13 Solderability of termination
Temp. of solder: 350±10°C
Solder time: 4+1/-0 s
Let sit for 24±2 hrs.at room condition,* then measure
Please refer to "Caution (Soldering and Mounting) Correction
with a Soldering Iron"
(*1) "Room condition" Temperature: 15 to 35°C, Relative humidity: 45 to 75%, Atmospheric pressure: 86 to 106kPa
Continued on the following page.
High Capacitance for General Use KRM Series Specifications and Test Methods
Continued from the preceding page.
No marking defects
Within ±7.5%
D.F.
I.R.
In accordance with item No.7
In accordance with item No.5
Fix the capacitor to the supporting jig (glass epoxy board) shown
in Fig. 4.
Perform the 100 cycles according to the 4 heat treatments listed
in the following table.
Let sit for 24±2 hrs. at room condition,* then measure.
1
2
3
4
Min. Operating Temp. ±3
Room Temp.
Max. Operating Temp. ±2
Room Temp.
30±3
2 to 3
30±3
2 to 3
15
Perform a heat treatment at 150+0/-10°C for 60±5 min. and
then let sit for 24±2 hrs. at room condition. (*1)
In accordance with item No.4
Solder Resist
Cu
Glass Epoxy Board
Fig. 4
No marking defects
Within ±15%
[KRM21, KRM31]
W.V.: 16V/25V/35V
: 0.2 max.
W.V.: 50V/100V
: 0.05 max.
[KRM55]
0.05 max.
[KRM21, KRM31]
W.V.: 16V/25V/35V
: More than 12.5MΩ · μF
W.V.: 50V/100V
: More than 50MΩ · μF
[KRM55]
More than 10MΩ · μF
In accordance with item No.4
No marking defects
Within ±15% (Rated Voltage: DC16V to DC100V)
Within ±20% (Rated Voltage: DC1000V)
[KRM21, KRM31]
W.V.: 16V/25V/35V
: 0.2 max.
W.V.: 50V/100V
: 0.05 max.
[KRM55]
0.05 max.
[KRM21, KRM31]
W.V.: 16V/25V/35V
: More than 25MΩ · μF
W.V.: 50V/100V
: More than 50MΩ · μF
[KRM55]
More than 10MΩ · μF
In accordance with item No.4
(*1) "Room condition" Temperature: 15 to 35°C, Relative humidity: 45 to 75%, Atmospheric pressure: 86 to 106kPa
Apply voltage as in the Table for 1000+48/-0 hrs. at maximum
operating temperature ±3°C. Remove and let sit for 24±2 hrs.
at room condition, (*1) then measure.
DC16V, DC25V,
DC35V, DC50V
DC63V, DC100V, DC250V
DC630V
DC1000V
D.F.
16
Let the capacitor sit at 40±2°C and relative humidity of 90 to 95%
for 500+24/-0 hrs.
Remove and let sit for 24±2 hrs. at room condition,* then
measure.
Perform a heat treatment at 150+0/-10°C for 60±5 min. and
then let sit for 24±2 hrs. at room condition. (*1)
I.R.
D.F.
200% of rated voltage (*2)
150% of rated voltage
120% of rated voltage
110% of rated voltage
17
The charge/discharge current is than 50mA.
Perform a heat treatment at 150+0/-10°C for 60±5 min. and
then let sit for 24±2 hrs. at room condition. (*1)
(*2) KRM21, KRM31: 150% of the rated voltage
I.R.
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