MICA CAPACITORS
MICA
CAPACITORS
Quick Reference Guide
DM Series General Specifications by Case Size
SAHA DESIGNATION
MIL STYLE - Discontinued
MAXIMUM
CAPACITANCE
IN pF IN THE
RATED
VOLTAGE
INDICATED
MAXIMUM
NOMINAL
DIMENSIONS IN
INCHES
MAXIMUM
NOMINAL
DIMENSIONS IN
mm
DM 05
-
1 to 390
390
200
120
-
-
0.270
0.250
0.190
0.120
6.86
6.35
4.83
3.05
DM 10
CM 04
1 to 390
820
390
360
250
-
0.390
0.380
0.220
0.141
9.91
9.65
5.59
3.58
DM 12
-
1 to 2500
-
2500
820
430
-
0.413
0.433
0.220
0.200
10.49
11.00
5.59
5.08
DM 15
CM 05
1 to 1200
2500
2000
2000
750
330
-
430
0.490
0.420
0.240
0.234
12.45
10.67
6.10
5.94
CAPACITANCE RANGE pF
50 V DC
100 V DC
300 V DC
500 V DC
1000 V DC*
L
W
T
B
L
W
T
B
SAHA DESIGNATION
MIL STYLE - Discontinued
DM 19
CM 06
1 to 8200
-
8200
6800
5100
4700
0.710
0.590
0.370
0.344
18.03
14.99
9.40
8.74
DM 20
-
680 to 12,000
-
12000
12000
10000
-
0.820
0.630
0.450
0.438
20.83
16.00
11.43
11.13
DM 30
CM 07
DM 42
-
CAPACITANCE RANGE pF
50 V DC
100 V DC
IN pF IN THE
300 V DC
RATED
500 V DC
VOLTAGE
1000 V DC*
MAXIMUM
CAPACITANCE
INDICATED
MAXIMUM
NOMINAL
DIMENSIONS IN
INCHES
MAXIMUM
NOMINAL
DIMENSIONS IN
mm
5100 to 20,000 16000 to 82000
-
-
-
82000
20000
68000
20000
51000
12000
30000
0.830
0.920
0.450
0.438
21.08
23.37
11.43
11.13
1.470
0.920
0.450
1.063
37.34
23.37
11.43
27.00
L
W
T
B
L
W
T
B
* Available as special part.
M Series
General Specifications
(Formerly Sold as
RS Components 124-XXX series)
MMR & MMA Series General Specifications
MMR Series
(
Equivalent to: ASHCROFT (GB) and JAHRE (D) Molded Radial)
SAHA Designation
MMR B - 1 MMR B - 2
Capacitance Range (pF)
4 - 1,500
750 - 2,500
Maximum
100 V DC
1,500
1,500
Capacitance in
350 V DC
750
1,500
the rated voltage 750 V DC
-
-
MMR L - 1
4 - 1,500
1,500
750
-
MMR E - 1
4 - 6,000
6,000
4,000
-
MMR E - 2
4,001 - 10,000
10,000
7,500
-
MMR S - 1
4 - 60,000
60,000
50,000
-
SAHA
Designation
Capacitance
Range in pF
Maximum
Capacitance in
the rated voltage
350 VDC
SAHA
Designation
Capacitance
Range in pF
Maximum
Capacitance in
the rated voltage
350 VDC
M - 37
270 - 560
560
M - 50
680 - 10000
10000
M - 6
22 - 68
68
M - 12
82 - 220
220
SAHA Designation
MMR A - 1 MMR A - 2 MMR A - 3
MMR A - 4
Capacitance Range (pF)
4 - 7,500
4 - 15,000 2,001 - 27,000 3,501 - 40,000
Maximum
100 V DC
7,500
15,000
27,000
40,000
Capacitance in
350 V DC
5,000
10,000
15,000
20,000
the rated voltage 750 V DC
1,000
2,000
3,500
5,000
MMA
Series
(
Equivalent to: ASHCROFT (GB) and JAHRE (D) Molded Axial)
SAHA Designation
Capacitance Range (pF)
Maximum
300 V DC
Capacitance in
500 V DC
the rated voltage
MMA 10
10 - 5,100
5,100
380
-
MMA 15
10 - 1,000
-
1,000
-
MMA 20
10 - 2,700
-
2,700
-
MMA 30
560 - 43,000
43,000
30,000
-
1
SUSCO Engineers & Buyers Guide - Mica Section
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Fax: 516-981-6867
MICA CAPACITORS
MICA CAPACITOR -
D
Series
Enter Series Code: (up to 4 Characters)
Series included: DM05, DM10, DM12, DM15,
DM19, DM20, DM30, DM42.
PART NUMBERING SYSTEM
M
0
5
F
A
1
5
1
J
O
3
-
S
A
-
R
0
2
Sample Part Number: DM05FA151J-CA Description: DM05 Series, 150pF, 100 Volt, 5% in Ammo Pack, Inside Crimped.
Characteristic
Enter characteristic code: ( 1 Character)
Temperature
Characteristic
Letter
C
D
E
F
Coefficient
PPM/C
-200 to +200
-100 to +100
-20 to +100
0 to +70
Capacitance
Drift
± (0.5% + 0.1pF)
± (0.3% + 0.1pF)
± (0.1% + 0.1pF)
± (0.05% + 0.1pF)
see catalog for individual part characteristic code
Rated Voltage
Enter voltage code: (1 character)
Rated Voltage Code
Letter Code
Volts DCW
Y
A
C
50
100
300
Rated Voltage Code
Letter Code
Volts DCW
E
D
F*
350
500
1000*
* Note: Not for use in snubber applications
Capacitance
Enter EIA Capacitance Code: (3 Digits)
First Two Digits represents significant figures of capacitance in Picofarads.
Third Digit indicates number of zeros to follow.
Example: 10pF = 100, 100pF = 101, 1000pF = 102
Tolerance
Enter Capacitance Tolerance Code: ( 1 Character)
Tolerance Code
D
E
F
G
± 0.5pF
± 0.5 %
±1 %
±2 %
H
J
K
±3 %
±5 %
± 10 %
Temperature Range
Code O = -55 to +125 C
Vibration Grade
Standard Grade = 3
(see catalog for details)
Marking
S = Saha
Package Type
Bulk
Ammo Pack
Tape & Reel
< Blank >
A
T
Special Specifications
C
R
P
Examples:
Cut
Crimped
Cut & Crimped
followed by 2 Digit specification code 01 -99
followed by 2 Digit specification code 01 -99
followed by 2 Digit specification code 01 -99
P 0 2 = cut leads to 0.175 mm and inside crimp
Rev D - 2/99
C 0 2 = cut leads to 0.175 mm
(See Special Specifications Sheet)
Part Marking
150 ± 5%
500V
SAHA
TYPE 1- Capacitance in pF,
tolerance in percentage or +/-
pF and voltage(Vdc) are indi-
cated in numbers along with
the brand marking. Brand
marking of “SAHA”, “S” or
“KEC” are common. Parts are
also supplied with no brand
marking in some cases based
on product availability and
customer requirements.
CM 05 FD
151JO3
SAHA
TYPE 2 - Formerly for
Military certified Capacitors.
The CM series code has
been discontinued.
151J
or
150 pF
+/- 5%
TYPE 3 - Capacitance in
EIA capacitance code
(as in Type 2) and toler-
ance with tolerance code
or capacitance value in
pF with tolerance in +/-
% or +/- pF are marked
on
the
capacitors.
Voltage is not marked on
the part. Brand marking
is optional.
TYPE 1
TYPE 2
TYPE 3
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SUSCO Engineers & Buyers Guide - Mica Section
2
MICA CAPACITORS
PERFORMANCE CHARACTERISTICS
GENERAL SPECIFICATIONS FOR SAHA MICA CAPACITORS
The SAHA Mica capacitors meet the required commercial specifications and the EIA
requirements. The CMO series capacitors also meet the military specifications MIL-C-5. The
actual specifications and dimensions of the capacitors are mentioned under each series in
the catalog.
CAPACITANCE
The capacitance of mica capacitors is measured at 1 M Hz ±10% for capacitance values up
to 1000 pF and at 1 K Hz ±10% for capacitance values above 1000 pF. The capacitance
value when measured at 25 °C shall be with in the tolerance specified.
DISSIPATION FACTOR
The dissipation factor for mica capacitors are measured at 1MHz for values up to 1000 pF
and at 1 KHz for values above 1000 pF. The values shall remain within the specified values.
The variation pattern of dissipation factor for different values of capacitance are also shown
in the Figure 3.
INSULATION RESISTANCE
The insulation resistance is measured at 50 ±5 V for capacitors with rated voltage of 50 V
DC and at 100 ±10 V for capacitors with higher voltage rating. The insulation resistance thus
measured at 25 °C shall meet the specified limits. The variation of insulation resistance for
different capacitance values at 25 °C is shown in Figure 1. After certain tests listed below
the insulation resistance value changes and these values are plotted in Figure 2. Figure 4
indicates the variation pattern of insulation resistance with capacitance value at different
temperature conditions.
WITHSTANDING VOLTAGE
The mica capacitors are designed to withstand higher voltage than the rated voltage for
limited time. These capacitors shall withstand 200% of the rated voltage for 1 to 5 seconds
when applied with a limiting surge current value of 50 mA.
VIBRATION GRADE
The capacitors shall be subjected to a harmonic motion having an amplitude of 1.5 mm and
the frequency which is varied between the limits of 10 and 55 Hz. The entire frequency
range from 10 to 55 Hz and then back to 10 Hz shall be traversed in approximately 1 minute
and the motion shall be applied for a period of 1hour in each of the three mutually
perpendicular directions. After testing, when the electrical measurements are performed:
1. The insulation resistance shall be more than 30000 M Ohms for capacitance value up to
10000 pF. Please refer to Figure 2 for acceptable variation pattern for Insulation
Resistance for values above 10000 pF.
2. The dissipation factor shall be within the original specified limits. Please also refer to
Figure 3 for variation pattern of dissipation factor with respect to capacitance value.
3. The capacitance change shall not exceed ±1% or ±1 pF whichever is greater.
SOLDERING HEAT RESISTANCE
Both leads of the capacitors shall be immersed in molten solder at a temperature of 270
°C for 3 to 4 seconds. After the test the capacitors shall meet the initial requirements of the
Withstanding voltage and the Capacitance change shall not exceed ± 0.55 or ± 1 pF.
MOISTURE RESISTANCE
Capacitors shall be subjected to a temperature of 40 ±2 °C at 90 to 95 % relative humidity
for 240 ±8 Hours. After the test:
1. The samples shall meet the after test requirement of Insulation resistance values as
furnished in Figure 2.
2. The dissipation factor shall be within 1.5 times the original specified limits. Please also
refer to Figure 3 for variation pattern of dissipation factor with respect to capacitance
value for original limits.
3. The capacitance change shall not exceed ±3% or ±1 pF whichever is greater.
MOISTURE RESISTANCE LOADING
Capacitors shall be subjected to a temperature of 40±2 °C at 90 to 95% relative humidity
with rated voltage for 500 Hours. After the test the samples are maintained at normal
temperature and relative humidity for a period of 4 to 24 hours. When tested after this;
1. The capacitor samples shall be free of cracks, or other mechanical damages and the
marking shall remain legible
2. The samples shall meet the original requirement of the Withstanding voltage
3. The samples shall meet the after test requirement of Insulation resistance as furnished in
Figure 2
4. The dissipation factor shall be within 2 times the original limits
5. The capacitance change shall not exceed ±5% or ±1 pF
FIGURE 3
FIGURE 2
FIGURE 1
FIGURE 4
FIGURE 5
3
SUSCO Engineers & Buyers Guide - Mica Section
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Fax: 516-981-6867
MICA CAPACITORS
MOISTURE RESISTANCE LOADING
Capacitors shall be subjected to a temperature of 40±2 °C at 90 to 95% relative humidity
with rated voltage for 500 Hours. After the test the samples are maintained at normal
temperature and relative humidity for a period of 4 to 24 hours. When tested after this;
1. The capacitor samples shall be free of cracks, or other mechanical damages and the
marking shall remain legible
2. The samples shall meet the original requirement of the Withstanding voltage
3. The samples shall meet the after test requirement of Insulation resistance as furnished in
Figure 2
4. The dissipation factor shall be within 2 times the original limits
5. The capacitance change shall not exceed ±5% or ±1 pF
LIFE TEST
The capacitor samples shall be subjected to a temperature of 125 °C with 150% of rated
voltage for 2000 hours.
After the test :
1. The capacitor samples shall be free of cracks, or other mechanical damages and the
marking shall remain legible
2. The samples shall meet the original requirement of the
Withstanding voltage
3. The samples shall meet the original requirements of Insulation resistance as furnished in
Figure 1.
4. The dissipation factor shall be within 1.5 times the original limits
5. The capacitance change shall not exceed ±3% or ±1 pF(whichever is greater) for
characteristic "C" and ±2.5 ±1pF (whichever is greater) for characteristic D, E and F.)
OTHER TYPICAL VARIATION PATTERNS
Some typical variation patterns for selected values during heat resistance load life test and
moisture proof load life tests as listed below are illustrated in Figures 8 through 10.
1. Insulation resistance Vs. time for heat resistance load life test and moisture proof load life
tests (Figure 8).
2. Capacitance change in percentage Vs. time (Figure 9).
3. Dissipation factor Vs. time (Figure 10).
Other variation patterns and characteristic for selected values as listed below are furnished
as Figures 11 through 14
1. Capacitance change Vs. frequency (Figure 11)
2. Capacitance change Vs. time(Figure 12)
3. Dissipation factor change Vs. frequency(Figure 13)
4. Insulation resistance Vs. temperature (Figure 14)
FIGURE 6
FIGURE 7
FIGURE 8
FIGURE 9
FIGURE 10
FIGURE 11
FIGURE 12
FIGURE 13
FIGURE 14
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4
MICA CAPACITORS
DM
SERIES
INTRODUCTION
SAHA Mica capacitors have been designed to meet the exacting physical, electrical and environmental
requirements of the MIL-C-5 and RS-153 specifications. Careful selection of raw materials, starting with the
finest available grade of India Ruby Mica, and the constant monitoring of all equipment and processes,
provides an overall uniform level of quality consistent with today's most sophisticated electronic equipment.
Ideal for Tuning, Timing, Filtering and Coupling Circuits.
•
•
•
•
FEATURES
Low loss and high stability
Available in very close tolerances
Suitable for precision applications
Wide range of operating temperature
DIMENSIONS:
LL = 31.75 mm (1.25”) min.
GENERAL SPECIFICATIONS
CAPACITANCE RANGE:
1 pF to 82,000 pF
VOLTAGE RATING:
50 V DC to 500 V DC (Higher voltage capacitors can also be custom
made)
TEMPERATE RATING:
- 40 to + 150 °C
CASE SIZES:
DM 05 to DM 42
INSULATION RESISTANCE:
100,000 M Ohms minimum at
25°C for capacitance up to 10,000 pF. Please refer to characteristic curve for values above the range.
DISSIPATION FACTOR
< 0.1% at
1 M Hz for values between 100 to 1,000 pF <0.2 at 1K Hz for values above 1,000 pF. Please refer to characteristic curve for values above
the range.
LIFE TEST DETAILS:
Capacitors shall withstand 1.5 times the rated DC voltage at 125 °C for 2000 hours. After the test:
1. Capacitance change shall not exceed 1% of the initial value or 1 pF, which ever is greater.
2. Dissipation Factor shall be within 1.5 times the original limits.
3. Insulation Resistance shall meet the initial specified requirements.
4. There shall be no remarkable change in the appearance and the marking shall remain legible.
CASE SIZE Vs. CAPACITANCE RANGE
Case
Si ze
DM05
DM10
DM12
DM15
DM19
DM20
DM30
DM42
Capacitance Range in pF
Standard
MIL
1 to 390
1 to 820
1 to 2,500
1 to 2,500
100 to 8,200
680 to 12,000
5,100 to 20,000
16,000 to 82,000
-
1 to 390
-
1 to 390
430 to 4,700
-
5,100 to 20,000
-
Equivalent
MIL Series
None
CM 04
None
CM 05
CM 06
None
CM 07
None
LEAD DIMENSIONS IN MILLIMETERS
Dimension
B
C
DM05
3.05
± 0.8
0.40
DM10
3.57
± 0.8
0.40
DM12
5.00
± 0.8
0.50
CASE CODE
DM15
DM19
5.95
8.73
± 0.8
± 0.8
0.60
0.80
DM20
11.11
± 0.8
0.80
DM30
11.11
± 0.8
1.00
DM42
26.99
± 0.8
1.00
LL" = 30 mm min.
Dimension "R" = 2.0 mm max. for DM 05 TO DM 15 and 3.2 mm max. for DM 19 to DM 42
LEAD DIMENSIONS IN INCHES
Dimension
B
C
DM05
0.120
± 0.031
0.016
#26
DM10
0.141
± 0.031
0.016
#26
DM12
0.197
± 0.031
0.020
#24
CASE CODE
DM15
DM19
0.234
0.344
± 0.031
± 0.031
0.025
0.032
#22
#20
DM20
0.438
± 0.031
0.032
#20
DM30
0.438
± 0.031
0.04
#18
DM42
1.063
± 0.031
0.04
#18
LL" = 1.25" min.
Dimension "R" = 0.078" max. for DM 05 TO DM 15 and 0.125"max. for DM 19 to DM 42
5
SUSCO Engineers & Buyers Guide - Mica Section
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Fax: 516-981-6867
