Surface Mount Disc Capacitors
Introduction
Samwha's high voltage ceramic capacitors offer superior performance and reliability.
SMDC is the resin molded SMD type that surface mounting is available.
SMDC exhibits high reliability through use of disc capacitor element.
Competitive lower maintenance cost is guaranteed.
Wide rated voltage ranges from 1kV to 6kV, through a disc element which withstand high voltage and
outcurve terminals.
Design flexibility ensures down sizing and higher resistance to outer impact.
Surface Mount Disc Capacitors
www.samwha.com
Shape & Dimensions
Inside Terminal (Style 1)
(Development Product)
Outside Terminal (Style 2)
(Mass Product)
(Unit : mm)
Rated Capacitance
Voltage
(pF)
3kV
5 ~ 33
5 ~ 33
4kV
39 ~ 47
18 ~ 27
39 ~ 47
5kV
6kV
5 ~ 15
18 ~ 27
5 ~ 15
L
±
0.5
5.7
5.7
7.1
5.5
7.1
5.5
7.1
7.1
W
±
0.3
4.5
4.5
6.3
4.5
6.3
4.5
6.3
6.3
H
±
0.2
2.3
2.3
2.4
2.3
2.4
2.3
2.4
2.4
E
±
0.2
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
A
1.7
1.7
2.0
1.7
2.0
1.7
2.0
2.0
B
3.1
3.1
3.7
3.1
3.7
3.1
3.7
3.7
K
±
0.1
-
-
-
0.5
0.5
0.5
0.5
0.5
L1
±
0.3
-
-
-
9.4
10.8
9.4
10.8
10.8
L2
Min.
-
-
-
6.7
7.9
6.7
7.9
7.9
Terminal Developm
Form
ent/Mass
Style 1
Style 1
Style 1
Style 2
Style 2
Style 2
Style 2
Style 2
Development
Development
Development
Mass
Development
Mass
Development
Development
134
SAMWHA CAPACITOR Co., Ltd.
Electrical Performance
Requirement
No.
Item
SCC Type
1
Operating
Temperature
Range
Capacitance
-25℃ ~ 110℃
SCK, SCG, SSC, SSD Type
B.E : -25℃ ~ +85℃
F : +10℃ ~ +65℃
Test Conditions
2
Within the specified range
3
Dissipation Factor
,
(tan
δ
Q)
Q
≥
400+20C
(C : capacitance, pF)
B,E : 2.5% Max.
F
: 5.0% Max.
- Temperature : 20±2℃
- Frequency : 1±0.1MHz(SCC Type)
1±0.1KHz
(SCK,SCG,SSC,SSD Type)
- Relative Humidity : 60~70%
- Measure voltage : 1±0.1Vrms
- Applied Voltage :
To be below 500V - Rating Voltage
Above 500V - 500V
- Charge Time : 60±5sec
- Testing Voltage
R.V
W.V
3kV
R.V
×
1.75
4kV~
R.V
×
1.5
Surface Mount Disc Capacitors
www.samwha.com
4
Insulation
resistance
More than 10000MΩ
5
Dielectric
Withstanding
Voltage
No remarkable abnormality is recognized
For 1 to 5 sec.(Between terminals)
The discharge current, however was
50 mA or less
6
Capacitance
temperature
Characteristics
Based on Items 2.2. 12 of EIA RS-198-C
136
SAMWHA CAPACITOR Co., Ltd.
Mechanical test and Environmental Substance
Requirement
No.
Item
SCC Type
1
Adhesive Strength of
Terminal
SCK, SCG, SSC,
SSD Type
Test Conditions
No removal of the termination or other
defect should occur.
Solder the capacitor to the testing jig (glass epoxy
board) shown in Fig. 2 using a eutectic solder. Then
apply 5 N force in the direction of the arrow. The
soldering should be used the reflow method and
should be conducted with care so that the soldering is
uniform and free of defects such as heat shock.
Surface Mount Disc Capacitors
www.samwha.com
Fig.2
2
Vibration
Resistance
Appearance
Capacitance
Change
No. visible damage
±5%
or
±0.5
pF
Whichever is larger
from initial measurement
B : With ± 10%
E : With ± 20%
F : With ± 30%
B,E : 5% Max.
F
: 7.5% Max.
Dissipation
Q
≥
200
,
Factor (tan
δ
Q)
I.R
3
Bending
Strength
Appearance
Capacitance
Change
More than 1000MΩ
No. visible damage
±5%
or
±0.5
pF
Whichever is larger
from initial measurement
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 2hrs. in each 3mutually
perpendicular directions (total of 6hrs.)
Solder the capacitor to the testing jig (glass epoxy
board) shown in Fig. 3 using a eutectic solder.
Then apply a force in the direction shown in Fig. 4.
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.
B : With ± 10%
E : With ± 20%
F : With ± 30%
Fig.3
Fig.4
4
Solderability Test
Visual examination terminals area shall
be at least 90% covered with a new
solder coating
No. visible damage
±5%
or
±0.5
pF
Whichever is larger
from initial measurement
No. Failure
B : With ± 5%
E : With ± 15%
F : With ± 20%
Soldering Method : Reflow Soldering
- Maximum Temperature : 250℃ max.
(245± 5℃, 5± 0.5 sec.)
- Preheating Temperature : 150~180℃, 60~180 sec.
Soldering Method : Reflow Soldering
- Maximum Temperature : 250℃ max.
(245± 5℃, 5± 0.5 sec.)
- Preheating Temperature : 150~180℃, 60~180 sec.
- After testing, The capacitors shall be subjected to the
standard test condition for a period 24 hours and shall
be measured.
5
Solder
Heat
Resistance
Appearance
Capacitance
Change
Dielectric
Strength
6
The regulation of
environmental pollution
materials.
※
Never use materials mentioned below in high voltage products regulated this document.
※
Pb, Hg, Cr+6, PBB, PBDE : 100ppm, Cd : 5ppm
※
Exception : - Pb of solder : <1000ppm - Pb of ceramic(dielectric)
138
SAMWHA CAPACITOR Co., Ltd.
