DM19EC100DO3-SA-R02 Sharma Electro Components, DM19EC100DO3-SA-R02 Datasheet - Page 3
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DM19EC100DO3-SA-R02
Manufacturer Part Number
DM19EC100DO3-SA-R02
Description
MICA Capacitors
Manufacturer
Sharma Electro Components
Datasheet
1.DM19EC100DO3-SA-R02.pdf
(17 pages)
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
2. The dissipation factor shall be within the original specified limits. Please also refer to
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
°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
2. The dissipation factor shall be within 1.5 times the original specified limits. Please also
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
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
4. The dissipation factor shall be within 2 times the original limits
5. The capacitance change shall not exceed ±5% or ±1 pF
3
10000 pF. Please refer to Figure 2 for acceptable variation pattern for Insulation
Resistance for values above 10000 pF.
Figure 3 for variation pattern of dissipation factor with respect to capacitance value.
furnished in Figure 2.
refer to Figure 3 for variation pattern of dissipation factor with respect to capacitance
value for original limits.
marking shall remain legible
Figure 2
SUSCO Engineers & Buyers Guide - Mica Section
MICA CAPACITORS
temperature of 270
Tel: 516-981-6690
FIGURE 1
FIGURE 2
FIGURE 3
FIGURE 4
FIGURE 5
Fax: 516-981-6867