TCO Datasheet, PDF (8/10 Pages) Rohm – Chip tantalum capacitors

Tantalum capacitors
(3) Derating voltage as function of temperature
100
90
80
70
60
50
75
85
95
105
TEMPERATURE (°C)
Fig.4
TCO series
85°C
Rated Voltage
Surge Voltage
(V.DC)
(V.DC)
2.5
3.2
4
5.2
6.3
8
10
13
105°C
Category Voltage
(V.DC)
2
3.2
5
8
(4) Reliability
The malfunction rate of tantalum solid state electrolytic capacitors varies considerably depending on the conditions of
usage (ambient temperature, applied voltage, circuit resistance).
Formula for calculating malfunction rate
λp = λb × (πE × πSR × πQ × πCV)
λp : Malfunction rate stemming from operation
λb : Basic malfunction rate
πE : Environmental factors
πSR : Series resistance
πQ : Level of malfunction rate
πCV : Capacitance
For details on how to calculate the malfunction rate stemming from operation, see the tantalum solid state electrolytic
capacitors column in MIL-HDBK-217.
(5) Impedance frequency characteristics
100.00
TCOA0J226M
A case 6.3V22µF
10.00
(6) ESR frequency characteristics
10.000
TCOA0J226M
A case 6.3V22µF
1.000
0.100
1.00
0.01
0.1
1
10 100 1000 10000
FREQUENCY (kHz)
Fig.5
0.010
0.01
0.1
1
10 100 1000 10000
FREQUENCY (kHz)
Fig.6
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