KRM55WR71E476MH01K - Murata

Continued on the following page.

(*1) "Room condition" Temperature: 15 to 35°C, Relative humidity: 45 to 75%, Atmospheric pressure: 86 to 106kPa

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.

Fig. 1

10 Adhesive Strength

of Termination No removal of the terminations or other defect should occur.

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.

9Strength of Metal

Terminal Termination not to be broken or loosened

Step Temperature (°C)

25±2

Min. Operating Temp. ±3

25±2

Max. Operating Temp. ±2

25±2

Rated Voltage Test Voltage

250% of the rated voltage

200% of the rated voltage

DC25V, DC50V, DC63V

DC100V

The capacitance measurement should be made at each step

specified in the Table.

U*ÀiÌÀi>ÌiÌ

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)

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)

7Dissipation

Factor (D.F.)

[KRM31]

W.V.: 25V

: 0.15 max.

W.V.: 50V

: 0.025 max.

W.V.: 100V

: 0.05 max.

[KRM55]

0.025 max.

The capacitance/D.F. should be measured at reference

temperature at the meaning frequency and voltage shown in

the table.

6 Capacitance Within the specified tolerance

The insulation resistance should be measured with Rated

Voltage and within 60±5 sec. of charging.

Insulation Resistance

(I.R.)

[KRM31]

W.V.: 25V

: More than 50MΩ · μF

W.V.: 50V/100V

: More than 500MΩ · μF

[KRM55]

More than 100MΩ · μF

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

Using calipers and micrometers

3 Dimensions Within the specified dimensions

Visual inspection

2 Appearance No defects or abnormalities

Reference temperature: 25°C

Operating

Temperature Range

X5R Char.: -55 to +85°C

X6S Char.: -55 to +105°C

X7R Char.: -55 to +125°C

No. Test MethodSpecificationsItem

High Capacitance for General Use KRM Series Specifications and Test Methods

Measuring

Voltage

Nominal

Capacitance

AC0.5±0.1V(r.m.s.)

AC1.0±0.2V(r.m.s.)

C>10μF

CV10μF

Measuring

Frequency

120±24Hz

1±0.2kHz

Pressure Pressure Rod

R 0.5

0.5L

10N, 10T1s

Glass Epoxy Board

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See item 13 Solderability of termination

UÊV>ÃiÊvÊ-`iÀ}ÊÀ

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"

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No marking defects

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Within ±10%

D.F. In accordance with item No.7

°,° In accordance with item No.5

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In accordance with item No.4

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.

U*ÀiÌÀi>ÌiÌ

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 -`iÀ>LÌÞÊvÊ

/iÀ>Ì The metal surface is soldered well

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.

(in mm)

Fig. 3

12 iviVÌ

No marking defects

Fig. 2

(in mm)

100

ø4.5

t : 1.6

Capacitance meter

Flexure: V5

20 50

45 45

speed: 1.0mm/s

Pressurize

/Þ«i iÃÊ®

2.2

4.5

5.0

8.0

1.65

5.6

1.0

KRM31

KRM55

300°C

200°C 180°C

230°C min.

260+0/-5°C

60 to 120 s

20 to 40 s

150°C

100°C

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.).

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No defects or abnormalities

>«>VÌ>Vi

Within the specified tolerance

D.F. In accordance with item No.7

Solder Resist

Glass Epoxy Board

Continued from the preceding page.

Continued on the following page.

(*1) "Room condition" Temperature: 15 to 35°C, Relative humidity: 45 to 75%, Atmospheric pressure: 86 to 106kPa

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High Capacitance for General Use KRM Series Specifications and Test Methods

(*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.

The charge/discharge current is than 50mA.

U*ÀiÌÀi>ÌiÌ

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) KRM31KC81E106, KRM31FR61E106, KRM31KR71H225,

KRM31KR71H475, KRM31KR72A105

: 150% of the rated voltage

17 vi

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No marking defects

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Within ±15%

D.F.

[KRM31]

W.V.: 25V

: 0.2 max.

W.V.: 50V/100V

: 0.05 max.

[KRM55]

0.05 max.

I.R.

[KRM31]

W.V.: 25V

: More than 25MΩ · μF

W.V.: 50V/100V

: More than 50MΩ · μF

[KRM55]

More than 10MΩ · μF

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-ÌÀi}Ì

In accordance with item No.4

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200% of the rated voltage (*2)

150% of the rated voltage

DC25V, DC50V

DC63V, DC100V

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.

U*ÀiÌÀi>ÌiÌ

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)

Õ`ÌÞÊ

-Ìi>`ÞÊ

-Ì>Ìi®

««i>À>Vi

No marking defects

>«>VÌ>ViÊ

>}i

Within ±15%

D.F.

[KRM31]

W.V.: 25V

: 0.2 max.

W.V.: 50V/100V

: 0.05 max.

[KRM55]

0.05 max.

I.R.

[KRM31]

W.V.: 25V

: More than 12.5MΩ · μF

W.V.: 50V/100V

: More than 50MΩ · μF

[KRM55]

More than 10MΩ · μF

iiVÌÀVÊ

-ÌÀi}Ì

In accordance with item No.4

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.

U*ÀiÌÀi>ÌiÌ

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)

Fig. 4

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««i>À>Vi

No marking defects

>«>VÌ>ViÊ

>}i

Within ±7.5%

D.F. In accordance with item No.7

I.R. In accordance with item No.5

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-ÌÀi}Ì

In accordance with item No.4

-Ìi« /i«iÀ>ÌÕÀiÊc®

Min. Operating Temp. ±3

Room Temp.

Max. Operating Temp. ±2

Room Temp.

/iÊ°®

30±3

2 to 3

30±3

2 to 3

Solder Resist

Glass Epoxy Board

Continued from the preceding page.

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High Capacitance for General Use KRM Series Specifications and Test Methods