HERMETICALLY SEALED - TANTALUM CASES
WET TANTALUM CAPACITORS
MIL Qualified - CLR81
MIL 39006/25
Wet tantalum capacitors
Hermetically sealed tantalum cases
High Capacitance
High ripple current
Axial leads
Polarized
ELECTRICAL AND CLIMATIC CHARACTERISTICS
MIL 39006/25
Detail specification
Operating temperature
Capacitance range
Tolerance
Voltage range
Max. capacitance change –55°C
Max. capacitance change +85°C
Max. capacitance change +125°C
Maximum DF at +25°C
Max. impedance at 120Hz –55°C
Max. leakage current at +25°C
Max. leakage current at +85°C / +125°C
Max. ripple current 40kHz +85°C
Max. Reverse voltage at +85°C
Max. Reverse voltage at +125°C
Max. surge voltage at +85°C
MIL-PRF-39006/25
Failure rate level M
–55°C +125°C
6,8µF
680µF
±10% - ±20%
25V
125V
see table
see table
see table
see table
see table
see table
see table
see table
3 volts
2 volts
1,15 x U
R
DIMENSIONS
(mm)
Case code
T1
T2
T3
T4
Without
insulating sleeve
D
±0,41
4,78
7,14
9,52
9,52
L
+0,79
–0,41
With
insulating sleeve
D max.
5,56
7,92
10,31
10,31
Lead
length
E
±6,35
38,10
57,15
57,15
57,15
E
0.64
±0,05
D
6.35 max.
L
E
11,51
16,28
19,46
26,97
PACKAGING, CONSTRUCTION:
see general characteristics
HOW TO ORDER
EXXELIA PN
Model code
M39006/25
Dash Number
-0220
Vibration and shock (optional)
H
-
= Without
H
= With
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WET TANTALUM CAPACITORS
HERMETICALLY SEALED - TANTALUM CASES
MIL 39006/25
STANDARD RATINGS - ELECTRICAL CHARACTERISTICS
Capacitance
120Hz
+25°C
(µF)
68
270
560
680
56
220
470
560
33
120
270
330
27
100
220
270
22
82
180
220
10
39
68
120
6,8
27
47
82
Dash Number
Case
(code)
±10%
±20%
Max.
Impedance
120Hz
–55°C
+85°C
+125°C
–55°C
(%)
(%)
(%)
(Ω)
Rated voltage (+85°C) 25 V - Derated voltage (+125°C) 15 V
–40
+12
+15
22
90
–62
+13
+16
55
33
–72
+20
+25
76
24
–72
+25
+30
63
19
Rated voltage (+85°C) 30 V - Derated voltage (+125°C) 20 V
–38
+12
+15
22
100
–60
+13
+16
42
36
–65
+20
+25
64
25
–65
+25
+30
55
20
Rated voltage (+85°C) 50 V - Derated voltage (+125°C) 30 V
–29
+10
+12
12,3
135
–42
+12
+15
22,5
49
–46
+20
+25
37
29
–46
+25
+30
38
22
Rated voltage (+85°C) 60 V - Derated voltage (+125°C) 40 V
–24
+10
+12
10,2
144
–36
+12
+15
19
54
–40
+16
+20
30
29
–45
+20
+25
27
23
Rated voltage (+85°C) 75 V - Derated voltage (+125°C) 50 V
–19
+10
+12
8,5
157
–30
+12
+15
15,2
63
–35
+16
+20
24,4
30
–40
+20
+25
37
24
Rated voltage (+85°C) 100 V - Derated voltage (+125°C) 65 V
–17
+10
+12
4,5
200
–20
+12
+15
10,4
80
–30
+14
+16
11,3
40
–35
+15
+17
25
30
Rated voltage (+85°C) 125 V - Derated voltage (+125°C) 85 V
–14
+10
+12
6
300
–18
+12
+15
7,2
90
–26
+14
+16
7,9
50
–30
+15
+17
17,4
32
Capacitance maximum change
Max. DF
+25°C
(%)
MIL Qualified - CLR81
Max. I leak
+25°C
(µA)
2
3
7
8
2
3
8
9
2
4
8
9
3
4
8
9
3
4
9
10
3
5
10
12
3
5
10
12
+85°C
+125°C
(µA)
9
16
28
32
9
16
32
36
9
24
32
36
12
20
32
36
12
24
36
40
12
24
40
48
12
24
40
48
Irms Max.
40kHz
+85°C
(mA)
850
1400
1750
2100
800
1200
1500
2000
700
1200
1450
1900
700
1100
1400
1850
600
1000
1300
1800
800
1300
1600
2000
700
1200
1500
1900
Max. ESR
120Hz
+25°C
(Ω)
4,29
2,70
1,80
1,23
5,21
2,53
1,81
1,30
4,95
2,49
1,82
1,53
5,01
2,52
1,81
1,33
5,13
2,46
2,23
1,80
5,97
3,54
2,21
2,76
11,71
3,54
2,23
2,82
T1
T2
T3
T4
T1
T2
T3
T4
T1
T2
T3
T4
T1
T2
T3
T4
T1
T2
T3
T4
T1
T2
T3
T4
T1
T2
T3
T4
0034
0036
0038
0040
0042
0044
0046
0048
0050
0052
0054
0056
0058
0060
0062
0064
0066
0068
0070
0072
0074
0076
0078
0080
0082
0084
0086
0088
0033
0035
0037
0039
0041
0043
0045
0047
0049
0051
0053
0055
0057
0059
0061
0063
0065
0067
0069
0071
0073
0075
0077
0079
0081
0083
0085
0087
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WET TANTALUM CAPACITORS
HERMETICALLY SEALED - TANTALUM CASES
Electrical characteristics
CAPACITANCE
The capacitance is defined by a rated value (C
R
, indicated on the capacitor) and
a tolerance (generally ±20%).
The capacitance is measured at a 100Hz or at a 120Hz frequency under a 0,1
to 1 V
AC
voltage and a 2,1 to 2,5 V bias (or 9 to 10 V for U
R
≥ 100 V).
At room temperature, it must be in the range defined by the rated value and
the tolerance.
Capacitance change vs temperature: see typical curves below. Maximum
changes are given, for each type, on the data sheets.
TOLERANCE (ON RATED CAPACITANCE)
It defines, with the rated capacitance, the range in which the capacitance value
must be at room temperature.
e.g.:
Rated capacitance: 100µF
Tolerance: 20%
The measured capacitance must be between:
100 - (20% of 100) = 80µF and 100 + (20% of 100) = 120µF
The standard tolerance for tantalum capacitors is 20%.
CAPACITANCE CHANGE VS TEMPERATURE
±20%
1
0.8
1.2
±20%
1.5
1.8
±20%
2.2
2.7
±20%
3.3
3.9
±20%
4.7
5.6
±20%
6.8
8.2
+30%
+20%
0%
–20%
–40%
–60%
–80%
C/C
–50
–30 –10 0
20
40
60
80
100 120
T (°C)
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HERMETICALLY SEALED - TANTALUM CASES
WET TANTALUM CAPACITORS
Electrical characteristics
DIRECT DC VOLTAGE
The rated voltage (U
R
),
indicated on the capacitor, is the maximum DC voltage
which can be applied continuously between –55°C and +85°C.
For the types which can be used up to 125°C, the voltage must be derated
between +85°C and +125°C according to the following curve.
LEAKAGE CURRENT
Leakage current is the residual current which flows through the capacitor
after the charging time, under rated voltage. It is measured after a time not
exceeding 5 minutes and is given in µA.
It is equivalent to the insulation resistance of the capacitor and it must be as
low as possible.
Maximum leakage current is a function of capacitance and rated voltage values
and is given, for each type, in the data sheets.
U
R
0. 8
0. 6
0. 4
0.2
LEAKAGE CURRENT CHANGE VS APPLIED VOLTAGE
U
C
= 66% U
R
1
-50 -4 0 -30 -20 -10
0
10
20 30 40
50
60 70
80 90 100 110 120
T (°C)
0.5
0.4
0.3
For the types which can be used up to 200°C, the voltage must be derated
between +85°C and +200°C according to the following curve.
U
RC
140
120
100
80
60
40
20
0
50
60
70
80
90
100 110
120 130
140 150
160
170
180 190
200
0.2
0.1
Multiplier of leakage current
0.05
0.04
0.03
0.02
°C
0.01
0
10
20
30
40
50
60
70
80
90 100
% U
R
- Percentage of rated voltage
The category voltage (U
C
)
is consequently the maximum DC voltage which can
be applied continuously at +125°C.
The surge voltage
is the maximum voltage which can be applied for short
periods.
It is given for each type in the data sheet and is generally equal to 1,15 times
U
R
between –55°C and +85°C and 1,15 times U
C
at +125°C.
Tests are performed with charging periods of 30 seconds, through a 1000 Ω
resistor, and discharging periods of 5 min 30s. 1000 cycles are done.
REVERSE VOLTAGE
Capacitors in silver cases (CT4, CT4E, CT9, CT9E) and some in tantalum cases
(WT83, WS83) cannot withstand any reverse voltage: it would cause damage,
more or less rapidly depending upon the voltage value.
It is therefore necessary to be sure that the bias voltage is high enough to
avoid that the AC voltage creates a reverse voltage (negative peak).
Other capacitors in tantalum cases (CT79, CT79E, ST79, DSCC 93026,
M39006/22 and M39006/25) can withstand a reverse voltage as specified in
the individual datasheet.
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WET TANTALUM CAPACITORS
HERMETICALLY SEALED - TANTALUM CASES
Electrical characteristics
DISSIPATION FACTOR
Dissipation factor is generally measured at the same time as the capacitance,
with the same conditions. It is a function of the series resistance of the
capacitor and the capacitance at low frequency.
DF = ESR x C x 2
p
f
At low frequency, the series resistance is the sum of an ohmic part (leads,
contacts, MnO
2
) and the dielectric losses.
Dissipation factor is given in % and maximum limits are given for each type in
the data sheets.
10
4
ESR CHANGE VS TEMPERATURE
∆ RSE
40
1
0, 4
EQUIVALENT SERIES RESISTANCE OR IMPEDANCE
Equivalent circuit of a capacitor
R
0, 1
–50
–30 –10 0
20
40
60
80
100 120
T (°C)
R
C
L
Z
1/C
ω
Lω
ESR CHANGE VS FREQUENCY
RSE
0, 9
R:
equivalent series resistance of the capacitor (leads,contacts,
MnO
2
, dielectric losses)
L:
inductance mainly due to the leads
C:
capacitance
Impedance
It is specified at 100Hz and –55°C and the formula for impedance is:
Z =k R
2
+ ( L
0, 8
0, 7
0, 6
0, 5
0, 4
0, 3
0, 2
0, 1
100
1k
10k
100 k
f (Hz)
q
- 1/C
q
)
2
It can be seen that:
• at low frequencies, impedance is a function of capacitance
• at high frequencies, impedance is a function of inductance
• at medium frequencies, it is a function of the ESR
Maximum impedance: see data sheets.
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