550D Datasheet, PDF (5/8 Pages) Vishay Siliconix – Solid-Electrolyte TANTALEX Capacitors for High Frequency Power Supplies

550D
Vishay Sprague
PERFORMANCE CHARACTERISTICS
1. Operating Temperature: Capacitors are designed
to operate over the temperature range of - 55°C to
+85°C with no derating.
1.1 Capacitors may be operated up to + 125°C with voltage
derating to two-thirds the + 85°C rating.
+ 85°C Rating
WORKING
SURGE
VOLTAGE VOLTAGE
(V)
(V)
6
8
10
13
15
20
20
26
35
46
50
65
+ 125°C Rating
WORKING
SURGE
VOLTAGE VOLTAGE
(V)
(V)
4
5
7
9
10
12
13
16
23
28
33
40
2. DC Working Voltage: The DC working voltage is the
maximum operating voltage for continuous duty at the
rated temperature.
3. Surge Voltage: The surge DC rating is the maximum
voltage to which the capacitors may be subjected
under any conditions, including transients and peak
ripple at the highest line voltage.
3.1 Surge Voltage Test: Capacitors shall withstand the
surge voltage applied in series with a 33 ohm ± 5%
resistor at the rate of one-half minute on, one-half
minute off, at + 85°C, for 1000 successive test cycles.
3.2 Following the surge voltage test, the dissipation factor
and the leakage current shall meet the initial
requirements; the capacitance shall not have changed
more than ± 10%.
4. Capacitance Tolerance: The capacitance of all
capacitors shall be within the specified tolerance limits
of the nominal rating.
4.1 Capacitance measurements shall be made by means
of polarized capacitance bridge. The polarizing
voltage shall be of such magnitude that there shall be
no reversal of polarity due to the AC component. The
maximum voltage applied to capacitors during
measurement shall be 2 volts rms at 1000Hz at + 25°C.
If the AC voltage applied is less than one-half volt rms,
no DC bias is required. Measurement accuracy of the
bridge shall be within ± 2%.
5. Capacitance Change With Temperature: The
capacitance change with temperature shall not
exceed the following percentage of the capacitance
measured at + 25%
- 55°C
- 10%
+ 85°C
+ 8%
+ 125°C
+ 12%
6. Dissipation Factor: The dissipation factor,
determined from the expression 2πfRC, shall not
exceed values listed in the Standard Ratings Table.
6.1 Measurements shall be made by the bridge method
at, or referred to, a frequency of 1000Hz and a
temperature of + 25°C.
7. Leakage Current: Capacitors shall be stabilized at
the rated temperature for 30 minutes. Rated voltage
shall be applied to capacitors for 5 minutes using a
steady source of power (such as a regulated power
supply) with 1000 ohm resistor connected in series with
the capacitor under test to limit the charging current.
Leakage current shall then be measured.
Note that the leakage current varies with applied voltage. See graph
below for the appropriate adjustment factor.
TYPICAL LEAKAGE CURRENT FACTOR RANGE
At
+ 25°C
1.0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.008
0.007
0.006
0.005
0.004
0.003
0.002
0.001
0 10 20 30 40 50 60 70 80 90 100
PERCENT OF RATED VOLTAGE
7.1 At + 25°C, the leakage current shall not exceed the
value listed in the Standard Ratings Table.
7.2 At + 85°C, the leakage current shall not exceed 10
times the value listed in the Standard Ratings Table.
7.3 At + 125°C, the leakage current shall not exceed 15
times the value listed in the Standard Ratings Table.
8. Life Test: Capacitors shall withstand rated DC voltage
applied at + 85°C for 2000 hours or rated DC voltage
applied at + 125°C for 1000 hours.
8.1 Following the life test, the dissipation factor shall meet
the initial requirement; the capacitance change shall
not exceed ± 2%; the leakage current shall not exceed
125% of the original requirement.
www.vishay.com
28
For technical questions, contact [e-mail]
Document Number: 40017
Revision 11-Nov-04