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138D Datasheet(PDF) 6 Page - Vishay Siliconix

Part No. 138D
Description  Wet Tantalum Capacitors Sintered Anode TANTALEX® Capacitors Hermetically-Sealed with True Glass-to-Tantalum Seal
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Manufacturer  VISHAY [Vishay Siliconix]
Direct Link  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

138D Datasheet(HTML) 6 Page - Vishay Siliconix

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138D
Vishay
Wet Tantalum Capacitors Sintered Anode TANTALEX® Capacitors
Hermetically-Sealed with True Glass-to-Tantalum Seal
www.vishay.com
For technical questions, contact: wettants@vishay.com
Document Number: 40025
22
Revision: 17-Mar-08
PERFORMANCE CHARACTERISTICS
1.
Operating Temperature: Capacitors are designed to
operate over the temperature range of - 55 °C to
+ 125 °C.
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 should be subjected
under any conditions. This includes transients and
peak ripple at the highest line voltage. The surge
voltage of capacitors rated below 150 V is 115 % of the
rated DC working voltage. The surge voltage of
capacitors rated at 150 V DC is 165 volts.
3.1
Surge Voltage Test: Capacitors shall withstand the
surge voltage test applied through a 1000
Ω ± 10 %
resistor in series with the capacitor and voltage source
at the rate of one-half minute on, four and one-half
minutes off, for 1000 successive test cycles at + 85 °C
or + 125 °C.
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 the
bridge method at or referred to, a frequency of 120 Hz
at a temperature of + 25 °C. A polarizing voltage shall
be used of such magnitude that there shall be no
reversal of polarity due to the AC component. The
maximum AC voltage will be 1 volt rms applied during
measurement.
5.
Capacitance
Change
With
Temperature:
The
capacitance change with temperature shall not exceed
the limits given in the Standard and Extended Ratings
Table for each capacitor.
6.
Equivalent Series Resistance: Measurements shall
be made by the bridge method at or referred to, a
frequency of 120 Hz at a temperature of + 25 °C. A
polarizing voltage shall be used of such magnitude that
there shall be no reversal of polarity due to the AC
component. The maximum AC voltage will be 1 Vrms
applied during measurement.
6.1
The equivalent series resistance shall not exceed the
maximum value in ohms listed in the Standard and
Extended Ratings Table for each capacitor.
6.2
The dissipation factor may be calculated from the
equivalent series resistance and capacitance values
as shown:
where:
DF = Dissipation Factor in %
R = ESR in ohms
C = Capacitance in µF
f = frequency in Hz
At 120 Hz, the above equation becomes:
TYPICAL CURVES OF IMPEDANCE AS A FUNCTION OF FREQUENCY AT VARIOUS TEMPERATURES
- 55
- 40
- 20
+ 25
+ 85
0.2
1.0
10
100
200
FREQUENCY IN Hz
100
1K
10K
100K
1M
10M
“K” Case 120 µF, 25 V Capacitors
°C
°C
°C
°C
125 °C
- 55
- 40
- 20
+ 25
+ 85
+125
FREQUENCY IN Hz
100
1K
10K
100K
1M
10M
0.2
1.0
10
100
200
“C” Case 10 µF. 100 V Capacitors
°C
°C
°C
°C
°C
°C
UP TO
+ 85 °C
WORKING
VOLTAGE
(V)
AT
+ 125 °C
WORKING
VOLTAGE
(V)
UP TO
+ 85 °C
WORKING
VOLTAGE
(V)
AT
+ 125 °C
WORKING
VOLTAGE
(V)
6
4
35
22
8
5
50
30
10
7
60
40
15
10
75
50
20
13
100
70
25
15
125
85
30
20
150
100
DF
2
πfRC
10
4
------------------
=
DF
RC
×
13.26
---------------
=


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