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TAP226050 Datasheet(PDF) 8 Page - AVX Corporation

Part # TAP226050
Description  Sectiom 3: Introduction Foreword
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Manufacturer  AVX [AVX Corporation]
Direct Link  http://www.avx.com
Logo AVX - AVX Corporation

TAP226050 Datasheet(HTML) 8 Page - AVX Corporation

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150
MAY 2013
SECTION 1:
ELECTRICAL CHARACTERISTICS AND EXPLANATION OF TERMS
1.1 CAPACITANCE
1.1.1 Rated capacitance (CR)
This is the nominal rated capacitance. For tantalum capaci-
tors it is measured as the capacitance of the equivalent
series circuit at 20°C in a measuring bridge supplied by a
120 Hz source free of harmonics with 2.2V DC bias max.
1.1.2 Temperature dependence on the capacitance
The capacitance of a tantalum capacitor varies with temper-
ature. This variation itself is dependent to a small extent on
the rated voltage and capacitor size. See graph below for
typical capacitance changes with temperature.
1.1.3 Capacitance tolerance
This is the permissible variation of the actual value of the
capacitance from the rated value.
1.1.4 Frequency dependence of the capacitance
The effective capacitance decreases as frequency increases.
Beyond 100 kHz the capacitance continues to drop until res-
onance is reached (typically between 0.5-5 MHz depending
on the rating). Beyond this the device becomes inductive.
Typical Capacitance vs. Temperature
15
10
5
0
-5
-10
-15
Temperature (
°C)
-55
-25
0
25
50
75
100
125
1.0 F 35V
1.4
1.2
1.0
0.8
0.6
0.4
100Hz
1kHz
10kHz
100kHz
Frequency
1.2 VOLTAGE
1.2.1 Rated DC voltage (VR)
This is the rated DC voltage for continuous operation up to
+85°C.
1.2.2 Category voltage (VC)
This is the maximum voltage that may be applied continu-
ously to a capacitor. It is equal to the rated voltage up to
+85°C, beyond which it is subject to a linear derating, to 2/3
VR at 125°C.
1.2.3 Surge voltage (VS)
This is the highest voltage that may be applied to a capaci-
tor for short periods of time. The surge voltage may be
applied up to 10 times in an hour for periods of up to
30 seconds at a time. The surge voltage must not be used
as a parameter in the design of circuits in which, in the
normal course of operation, the capacitor is periodically
charged and discharged.
100
90
80
70
60
50
75
85
95
105
115
125
Temperature
°C
TAP/TEP Technical Summary and
Application Guidelines
Typical Curve Capacitance vs. Frequency
Category Voltage vs. Temperature


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