How it Works
MURATA
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GNM
Technical data
4 pgs86.22 Kb0

MURATA GNM Technical data

No. Item
Continued on the following page.
Solder resist
Copper foil
c
d
b b a
a
c
d
Solder resist
Copper foil
Operating Temperature
1
Range
Rated Voltage
2
Appearance
3
Dimensions
4
Dielectric Strength
5
Insulation
6
Resistance
Capacitance
7
Q/ Dissipation Factor
8
(D.F.)
Capacitance
9
Temperature Characteristics
Adhesive Strength
10
of Termination
Capacitance Change
Temperature Coefficent
Capacitance Drift
Specifications
Temperature
Compensating Type
5C : –55 to +125°C
R7 : –55 to +125°C R6 : –30 to +85°C
High Dielectric Type
See the previous pages
•
More than 10,000MΩ or 500Ω
F
(Whichever is smaller)
Within the specified tolerance 30pF min. : QU1000
30pF max. :
QU400+20C
C : Nominal
Char.
R7, R6
25V
0.025 max.
min.
16V
0.035 max.
10V
0.035 max.
6.3V
0.05
max.
Capacitance (pF)
Temp.
Within the specified tolerance (Table A)
Char.
R7
R6
Range
–55C°
to +125C°
–55C°
to +85C°
Reference
Temp
25°C
Cap.
Change
Within T15%
Within the specified tolerance (Table A)
Within T0.2%
or T0.05pF (Whichever is larger.)
No removal of the terminations or other defect should occur.
GNMpp4 GNMpp2
Test Method
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
O-P
or V whichever is larger, should be maintained within the rated voltage range.
Visual inspection Using calipers
No failure should be observed when 300% of the rated voltage (5C) or 250% of the rated voltage (R7) is applied between the terminations for 1 to 5 seconds, provided the charge/discharge current is less than 50mA.
The insulation resistance should be measured with a DC voltage not exceeding the rated voltage at 25°C and 75%RH max. and within 2 minutes of charging.
The capacitance/Q/D.F. should be measured at 25°C at the frequency and voltage shown in the table.
Char.
Item
Frequency Voltage
5C R7
1T0.1MHz 1T0.1kHz
0.5 to 5Vrms
1.0T0.2Vrms
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 step1 through 5, the capacitance should be within the specified tolerance for the temperature coefficient and capacitance change as Table A. The capacitance drift is calculated by dividing the differences between the maximum and minimum measured values in the steps 1, 3 and 5 by the cap. value in step 3.
Step
1 2 3 4 5
Temperature (°C)
25T2
–55T3 (for 5C/R7), –30T3 (for F5)
25T2
125T3 (for 5C/R7), 85T3 (for F5)
20T2
(2) High Dielectric Constant Type The ranges of capacitance change compared with the above 25°C value over the temperature ranges shown in the table should be within the specified ranges.
Solder the capacitor to the test jig (glass epoxy board) shown in Fig.1 using a eutectic solder. Then apply 5N force in parallel with the test jig for 10T1 sec. The soldering should be done either with an iron or using the reflow method and should be conducted with care so that the soldering is uniform and free of defects such as heat shock.
Type a b c d
GNM1M2
GNM212 GNM214 GNp314
0.5
0.4
0.6
0.8
1.6
1.8
2.0
2.5
0.32
0.15
0.25
0.4
0.32
0.5
0.25
0.4
(in mm)
Fig. 1
,
Continued from the preceding page.
Continued on the following page.
No. Item
100
1.0
5.0 b
a
40
c
d
100
1.0
5.0 b
a
40
c
d
Capacitance meter
Flexure : V1
20
50
R230
Pressurizing speed : 1.0mm/sec.
Pressurize
45 45
Vibration
11
Resistance
Deflection12
Appearance Capacitance
Q/D.F.
Specifications
Temperature
Compensating Type
High Dielectric Type
30pF max. :
QU400+20C
C : Nominal
Char.
R7, R6
25V
0.025 max.
min.
16V
0.035 max.
Capacitance (pF)
No cracking or marking defects should occur
#GNMpp4 #GNMpp2
10V
0.035 max.
6.3V
0.05
max.
t=0.8mm
Test Method
Solder the capacitor to the test jig (glass epoxy board) in the same manner and under the same conditions as (10). 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 minute. This motion should be applied for a period of 2 hours in each 3 mutually perpendicular directions (total of 6 hours).
Solder the capacitor on the test jig (glass epoxy board) shown in Fig. 2 using a eutectic solder. Then apply a force in the direction shown in Fig. 3 for 5T1 sec. The soldering should be done either with an iron or using the reflow method and should be conducted with care so that the soldering is uniform and free of defects such as heat shock.
Solderability of
13
Termination
Resistance to Soldering Heat
14
Appearance
Capacitance Change
Q/D.F.
I.R. Dielectric
Strength
Type a b c d
GNM1M2
GNM212 GNM214 GNp314
2.0T0.05
2.0T0.05
2.0T0.05
2.5T0.05
0.5T0.05
0.6T0.05
0.7T0.05
0.8T0.05
0.32T0.05
0.5T0.05
0.3T0.05
0.4T0.05
0.32T0.05
0.5T0.05
0.2T0.05
0.4T0.05 (in mm)
Fig. 2
75% of the terminations are to be soldered evenly and continuously.
The measured and observed characteristics should satisfy the specifications in the following table.
No marking defects Within T2.5%
or T0.25pF
(Whichever is
R7, R6 : Within T7.5% larger) 30pF min. : QU1000
30pF max. :
QU400+20C
C : Nominal
Char.
R7, R6
25V
0.025 max.
min.
16V
0.035 max.
10V
0.035 max.
6.3V
0.05
max.
Capacitance (pF)
•
More than 10,000MΩ or 500Ω
F (Whichever is smaller)
No failure
Fig. 3
Immerse the capacitor in a solution of ethanol (JIS-K-8101) and rosin (JIS-K-5902) (25% rosin in weight proportion). Preheat at 80 to 120°C for 10 to 30 seconds. After preheating, immerse in eutectic solder solution for 2T0.5 seconds at 230T5°C.
Preheat the capacitor at 120 to 150°C for 1 minute. Immerse the capacitor in a eutectic solder solution at 270T5°C for 10T0.5 seconds. Let sit at room temperature for 24T2 hours (temperature compensating type) or 48T4 hours (high dielectric constant type), then measure.
• Initial measurement for high dielectric constant type Perform a heat treatment at 150+0/-10°C for one hour and then let sit for 48T4 hours at room temperature. Perform the initial measurement.
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