HERMETICALLY SEALED - TANTALUM CASES
WET TANTALUM CAPACITORS
MIL 39006/25
MIL Qualified - CLR81
Wet tantalum capacitors
Hermetically sealed tantalum cases
High Capacitance
High ripple current
Axial leads
Polarized
ELECTRICAL AND CLIMATIC CHARACTERISTICS
MIL 39006/25
MIL-PRF-39006/25
Detail specification
Failure rate level M, level P, level R
Operating temperature
Capacitance range
Tolerance
Voltage range
–55°C +125°C
6,8µF 680µF
±10% - ±20%
25V 125V
Max. capacitance change –55°C
Max. capacitance change +85°C
Max. capacitance change +125°C
see table
see table
see table
Maximum DF at +25°C
see table
Max. impedance at 120Hz –55°C
see table
Max. leakage current at +25°C
Max. leakage current at +85°C / +125°C
see table
see table
Max. ripple current 40kHz +85°C
see table
Max. Reverse voltage at +85°C
Max. Reverse voltage at +125°C
3 volts
2 volts
Max. surge voltage at +85°C
1,15 x UR
DIMENSIONS (mm)
Case code
Without
insulating sleeve
D±0,41
T1
T2
T3
T4
4,78
7,14
9,52
9,52
L
+0,79
–0,41
11,51
16,28
19,46
26,97
With
insulating sleeve
Lead
length
D max.
E ±6,35
5,56
7,92
10,31
10,31
38,10
57,15
57,15
57,15
PACKAGING, CONSTRUCTION:
see general characteristics
E
E
0.025 ±0,002
(0.64 ±0,05)
D
0.25 (6.35) max.
L
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
MIL Qualified - CLR81
STANDARD RATINGS - ELECTRICAL CHARACTERISTICS
Capacitance
120Hz
Case
+25°C
(code)
(µF)
Dash Number
Failure Rate Level M
Dash Number
Failure Rate Level P
Dash Number
Failure Rate Level R
Capacitance maximum
change
±10%
–55°C
(%)
±10%
±20%
±10%
±20%
68
270
560
T1
T2
T3
0034
0036
0038
0033
0035
0037
0122
0124
0126
0121
0123
0125
56
220
470
T1
T2
T3
0042
0044
0046
0041
0043
0045
0130
0132
0134
0129
0131
0133
33
120
270
T1
T2
T3
0050
0052
0054
0049
0051
0053
0138
0140
0142
0137
0139
0141
27
100
220
T1
T2
T3
0058
0060
0062
0057
0059
0061
0146
0148
0150
0145
0147
0149
22
82
180
T1
T2
T3
0066
0068
0070
0065
0067
0069
0154
0156
0158
0153
0155
0157
10
39
68
T1
T2
T3
0074
0076
0078
0073
0075
0077
0162
0164
0166
0161
0163
0165
6.8
27
47
T1
T2
T3
0082
0084
0086
0081
0083
0085
0170
0172
0174
0169
0171
0173
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±20%
Max.
Max. DF Impedance
+25°C
120Hz
(%)
–55°C
+85°C +125°C
(Ω)
(%)
(%)
Rated voltage (+85°C) 25 V - Derated voltage (+125°C) 15 V
0210
0209
–40
+12
+15
22
0212
0211
–62
+13
+16
55
0214
0213
–72
+20
+25
76
Rated voltage (+85°C) 30 V - Derated voltage (+125°C) 20 V
0218
0217
–38
+12
+15
22
0220
0219
–60
+13
+16
42
0222
0221
–65
+20
+25
64
Rated voltage (+85°C) 50 V - Derated voltage (+125°C) 30 V
0226
0225
–29
+10
+12
12.3
0228
0227
–42
+12
+15
22.5
0230
0229
–46
+20
+25
37
Rated voltage (+85°C) 60 V - Derated voltage (+125°C) 40 V
0234
0233
–24
+10
+12
10.2
0236
0235
–36
+12
+15
19
0238
0237
–40
+16
+20
30
Rated voltage (+85°C) 75 V - Derated voltage (+125°C) 50 V
0242
0241
–19
+10
+12
8.5
0244
0243
–30
+12
+15
15.2
0246
0245
–35
+16
+20
24.4
Rated voltage (+85°C) 100 V - Derated voltage (+125°C) 65 V
0250
0249
–17
+10
+12
4.5
0252
0251
–20
+12
+15
10.4
0254
0253
–30
+14
+16
11.3
Rated voltage (+85°C) 125 V - Derated voltage (+125°C) 85 V
0258
0257
–14
+10
+12
6
0260
0259
–18
+12
+15
7.2
0262
0261
–26
+14
+16
7.9
50
Max. I leak
+25°C
(µA)
Irms Max. Max. ESR
40kHz
120Hz
+85°C
+25°C
+85°C
(mA)
(Ω)
+125°C
(µA)
90
33
24
2
3
7
9
16
28
850
1400
1750
4.29
2.70
1.80
100
36
25
2
3
8
9
16
32
800
1200
1500
5.21
2.53
1.81
135
49
29
2
4
8
9
24
32
700
1200
1450
4.95
2.49
1.82
144
54
29
3
4
8
12
20
32
700
1100
1400
5.01
2.52
1.81
157
63
30
3
4
9
12
24
36
600
1000
1300
5.13
2.46
2.23
200
80
40
3
5
10
12
24
40
800
1300
1600
5.97
3.54
2.21
300
90
50
3
5
10
12
24
40
700
1200
1500
11.71
3.54
2.23
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WET TANTALUM CAPACITORS
HERMETICALLY SEALED - TANTALUM CASES
Electrical characteristics
CAPACITANCE
TOLERANCE (ON RATED CAPACITANCE)
The capacitance is defined by a rated value (CR, indicated on the capacitor) and
a tolerance (generally ±20%).
It defines, with the rated capacitance, the range in which the capacitance value
must be at room temperature.
The capacitance is measured at a 100Hz or at a 120Hz frequency under a 0,1
to 1 VAC voltage and a 2,1 to 2,5 V bias (or 9 to 10 V for UR ≥ 100 V).
At room temperature, it must be in the range defined by the rated value and
the tolerance.
e.g.:
Capacitance change vs temperature: see typical curves below. Maximum
changes are given, for each type, on the data sheets.
The standard tolerance for tantalum capacitors is 20%.
CAPACITANCE CHANGE VS TEMPERATURE
+30%
Rated capacitance: 100µF
Tolerance: 20%
The measured capacitance must be between:
100 - (20% of 100) = 80µF and 100 + (20% of 100) = 120µF
±20%
±20%
1
C/C
0.8
±20%
1.5
1.2
±20%
2.2
1.8
±20%
3.3
2.7
±20%
4.7
3.9
6.8
5.6
8.2
+20%
0%
–20%
–40%
–60%
–80%
–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
LEAKAGE CURRENT
The rated voltage (UR), indicated on the capacitor, is the maximum DC voltage
which can be applied continuously between –55°C and +85°C.
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.
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.
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.
LEAKAGE CURRENT CHANGE VS APPLIED VOLTAGE
UR
0. 8
U C = 66% U R
0. 6
0. 4
1
0.2
-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.
0.2
URC
0.1
140
Multiplier of leakage current
120
100
80
60
40
20
0
50
60
70
80
90
100 110
120 130
140 150
160
170
180 190
°C
200
0.05
0.04
0.03
0.02
0.01
0
10
20
30
40
50
60
70
80
90 100
% UR - Percentage of rated voltage
The category voltage (UC) 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
UR between –55°C and +85°C and 1,15 times UC 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
ESR CHANGE VS TEMPERATURE
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.
∆ RSE
40
DF = ESR x C x 2p f
10
At low frequency, the series resistance is the sum of an ohmic part (leads,
contacts, MnO2) and the dielectric losses.
4
Dissipation factor is given in % and maximum limits are given for each type in
the data sheets.
1
0, 4
EQUIVALENT SERIES RESISTANCE OR IMPEDANCE
0, 1
–50
Equivalent circuit of a capacitor
–30 –10 0
20
40
60
80
100 120
T (°C)
R
R
C
L
Z
1/C ω
ESR CHANGE VS FREQUENCY
Lω
∆ RSE
0, 9
0, 8
R: equivalent series resistance of the capacitor (leads,contacts,
MnO2, dielectric losses)
L: inductance mainly due to the leads
C: capacitance
0, 7
0, 6
0, 5
Impedance
0, 4
It is specified at 100Hz and –55°C and the formula for impedance is:
0, 3
Z =k R2 + ( Lq - 1/Cq)2
0, 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
0, 1
100
1k
10k
100 k
f (Hz)
Maximum impedance: see data sheets.
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HERMETICALLY SEALED - TANTALUM CASES
WET TANTALUM CAPACITORS
Electrical characteristics
MAXIMUM RIPPLE CURRENT
CT79/79E (SMD) - CT79/79E HT200 - ST79 (SMD) - ST79 HT200 - WT83 - WS83
Temperature: +85°C (+70°C only WT82)
Frequency: 40kHz
Applied voltage: 0,66 UR
If conditions are different, use the multipliers given in the table below to calculate
the new maximum current.
Maximum ripple currents which are indicated in the data sheets are given for the
following conditions:
Frequency
Temperature
Peak voltage
in % of UR
100Hz
+55°C
1kHz
+85°C +105°C +125°C +55°C
10kHz
40kHz
+85°C +105°C +125°C +55°C
+85°C +105°C +125°C +55°C
100kHz
+85°C +105°C +125°C +55°C
+85°C +105°C +125°C
66%
0,6
0,6
0,46
0,27
0,72
0,72
0,55
0,32
0,88
0,88
0,68
0,4
1
1
0,77
0,45
1,1
1,1
0,85
0,5
70%
0,6
0,58
0,44
–
0,72
0,7
0,52
–
0,88
0,85
0,64
–
1
0,97
0,73
–
1,1
1,07
0,8
–
80%
0,6
0,52
0,35
–
0,72
0,62
0,42
–
0,88
0,76
0,52
–
1
0,87
0,59
–
1,1
0,96
0,65
–
90%
0,6
0,46
–
–
0,72
0,55
–
–
0,88
0,67
–
–
1
0,77
–
–
1,1
0,85
–
–
100%
0,6
0,39
–
–
0,72
0,45
–
–
0,88
0,55
–
–
1
0,63
–
–
1,1
0,69
–
–
CT4 - CT4E - CT9 - CT9E TYPES
2- THERMAL SHOCKS - RAPID CHANGES OF TEMPERATURE
Maximum ripple currents which are indicated in the data sheets are given for
the following conditions:
This test is performed to check that the capacitors can withstand sudden
temperature changes. The method which is used is the one with two chambers,
one at –55°C, the other one at +125°C. Five cycles are performed, with 30min at
low temperature and 30min at high temperature, during the periodical tests (30
cycles for CT79 type). Electrical characteristics are measured after this test.
• frequency from 100Hz to 100kHz and more
• temperature from –55°C to +85°C
Correction vs temperature
3 - DAMP HEAT TEST
If the temperature is higher than 85°C, decrease linearly the maximum value
from 100% at +85°C to 80% at +125°C.
This test is performed during the periodical test, with the following conditions:
Temperature: 40°C
Humidity: 90 to 95%
DC voltage: without
Time: 21 or 56 days
Correction vs frequency
If frequency is lower than 100Hz, apply the following multipliers to the
maximum ripple currents:
75Hz: 0,79
60Hz: 0,65
50Hz: 0,55
25Hz: 0,55
Electrical characteristics are measured after this test.
OTHERS RULES (FOR ALL TYPES)
MECHANICAL CHARACTERISTICS
• the sum of the positive peak AC voltage and the DC bias voltage must be lower
than the rated voltage.
1 - VIBRATIONS
• the negative peak must not create any Reverse voltage (or maximum 3 volts for
CT79 and CT79E types).
CT9 - CT9E types
• Frequency: 10 to 2000Hz
• Amplitude: 1,5mm or 196m/s2 - 20g
• Time: 6 hours
This test is performed during the periodical test, with the following conditions:
• because of the increase of the series resistance at low temperature, it is
better to not apply directly the maximum ripple current but to increase this
one gradually to raise the capacitor temperature.
CT79/79E (SMD) - CT79/79E HT200 - ST79 (SMD) - ST79 HT200 - WT83 - WS83
• Frequency: 10 to 2000Hz
• Amplitude: 3,5mm or 490m/s2 - 50g
• Time: 6 hours
CLIMATIC CHARACTERISTICS
1- CLIMATIC CATEGORY
Climatic category defines the temperature range over which the capacitor can
be used continuously, and also the number of days for the damp heat test
(this test is performed periodically at 40°C with a 93% moisture rate).
2 - SHOCKS
This test is performed just after the vibrations test, with the following conditions
for all types:
• Acceleration: 981 m/s2 - 100g
• Pulse width: 6 ms
• Shape: 1/2 sinewave
• Number of shocks: 18 (3 in each direction, positive and negative)
Note: it is necessary to derate the voltage for temperatures higher than 85°C
(see page 15).
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WET TANTALUM CAPACITORS
HERMETICALLY SEALED - TANTALUM CASES
Electrical characteristics
RELIABILITY
pV = INFLUENCE OF APPLIED VOLTAGE VS RATED VOLTAGE
Reliability of a component can be defined as its probability to work without any
failure, in defined conditions and during a fixed time.
V
100
Reliability is not therefore only a function of the component quality, but also of
the application and environmental conditions.
The parameter which is the most commonly used for the reliability is the
failure rate in time, generally expressed in % per 1000 hours.
CALCULATION OF A COMPONENT FAILURE RATE USED IN AN EQUIPMENT
10
The calculation method on the next page uses parmeters which are given
by the CNET (Centre National d’Étude des Télécommunications) in its
Reliability Data Book (RDF 1993).
The failure rate is calculated with parameters which are function of the
capacitor (capacitance, case type, approvals, high surge current test) and
others ones which are representative of application conditions (voltage,
temperature, resistance in serie, environmental conditions).
1
0
0.2
Example:
0.4
0.6
0.8
1
pv = exp (( r / 0,85)2)
CT79E 2200µF - 6,3 V used under 3 volts, at 40°C, in a satellite in orbit:
Formula:
pt = 1,2 pV = 1,38
pC = 1,4 pE = 0,5 pq = 1
r = rated voltage
peak voltage
l = 3 x 1,2 x 1,38 x 1,4 x 0,5 x 1.10–9/h = 3,5.10–9/h = 0,00035 % defects/1000
hours
Curve pv = f (r)
p = INFLUENCE OF CAPACITANCE
C
p = TEMPERATURE INFLUENCE
t
t
100
p = INFLUENCE OF APPLICATION
E
Satellite in orbit
Ground; stationary; protected
Ground; stationary; non protected
Ground; mobile; soft conditions
Aircraft; soft conditions
Ship; soft conditions
Ground; mobile; hard conditions
Ship; hard conditions
Aircraft; hard conditions
Satellite; launching
10
1
pC = 0,9
pC = 1,0
pC = 1,3
pC = 1,4
3,3µF
20µF
1000µF
2200µF
0
20
40
60
80
100
p = INFLUENCE OF QUALIFICATION
120
q
T (°C)
Products approved to CECC
Others products
Formula: pt = exp (1,8.( t / tm)2)
with:
t = using temperature
tm = maximum temperature
Curve for tm = 125°C
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pE = 0,5
pE = 1
pE = 2,5
pE = 6
pE = 6
pE = 6
pE = 8
pE = 10
pE = 15
pE = 20
18
tantalum@exxelia.com
pq = 1,0
pq = 2,0
Page revised 09/18
HERMETICALLY SEALED - TANTALUM CASES
WET TANTALUM CAPACITORS
Electrical characteristics
PRODUCT SAFETY INFORMATION SHEET
CONSTRUCTION
This should read in conjunction with the Product Data Sheet/Specification.
CT79/79E (SMD) - CT79/79E HT200 - ST79 (SMD) - ST79 HT200 - WT83 - WS83
Failure to observe the ratings, and the information on this sheet may result in a
safety hazard.
Ring seal
1. MATERIAL CONTENT
Case to seal laser welding
Wet tantalum capacitors contain hazardous materials:
• Liquid electrolyte - gelled diluted sulphuric acid
• Solid tantalum anode
Tantalum case
Tantalum-glass-tantalum seal
Tantalum cathode
Tantalum wire-tube-nickel wire welding
The device consists of solder coated terminal wires and the materials listed below:
• Silver case or tantalum case
• Rubber “o” rings
• PTFE spacers
• Filled epoxy resin end cap on silver case products
PTFE spacer
Wet or gelled electrolyte
Tantalum wire
Sintered tantalum anode
PTFE bush
2. PHYSICAL FORM
These Capacitors are physically small and are cylindrical with axial leads.
Glass metal seal: CT9 - CT9E
Epoxy sealing: CT4 - CT4E
3. INTRINSIC PROPERTIES
3.1 Operating
Wet tantalum capacitors will operate satisfactorily providing that the sum of the
applied d.c. and the peak a.c. ripple voltage does not exceed the rated d.c. voltage.
Ring seal
Case to seal soldering
CT 9 - CT 9E
Tantalum-glass-metal seal
There must be no reversal of polarity.
The maximum ripple currents and voltages and d.c. polarising voltages are
specified in the data sheets.
Tantalum cathode
Tantalum wire-tube-nickel wire welding
Some tantalum cased devices will stand up to 3 VDC Reverse for short periods of
time.
A Reverse application of the rated voltage will result in loss of capacitance, early
short circuit failure and may result in fire or explosion.
It may also cause consequential failure of other associated components in circuit,
e.g. diodes, transformers, etc.
PTFE spacer
Tantalum wire
Wet or gelled electrolyte
PTFE bush
Sintered tantalum anode
Ring seal
Case crimping on elastomer seal
3.2 Non-Operating
Silver case
CT 4 - CT 4E
Silver case
Epoxy resin
Wet Tantalum capacitors contain electrolyte which is a conducting material.
Tantalum cathode
If electrolyte leaks onto a printed circuit board or similar insulated support, short
circuits can be caused.
Tantalum wire nickel wire welding
PTFE spacer
All electrolytes are corrosive to some extent.
No electrolyte should be allowed to come in contact with the skin, eyes, etc., and if
they do appropriate medical treatment should be applied.
Wet or gelled electrolyte
Tantalum wire
Sintered tantalum anode
PTFE bush
MARKING (except DSCC 93026, M39006/22, M39006/25)
+ Positive mark
Voltage
FIRCA
CT 9
+
+
Brand
Type
Capacitance
µF
V
%
Tolerance
Date code =
year : 2 digits
week : 2 digits
PACKAGING
In cardboard boxes
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TANTALUM CAPACITORS
General information
MANUFACTURING
Tantalum capacitors are, with ceramic, aluminum and film capacitors, one of
the most used family.
ANODE AND INSULATOR
The manufacturing technology and the constant improvements in tantalum
powders allow it to be the capacitor with the highest CV (product capacitance x
voltage) per volume, very long life and high reliability.
Tantalum capacitors are the capacitors which have the highest ratio of
capacitance per volume. This is mainly due to the high dielectric coefficient of
its insulator and to its large cross-section.
It has also the following advantages:
• Wide range of capacitance (less than 1µF to more than 10 000µF)
• Wide operating temperature range (–55°C to +200°C)
• Electrical characteristics stable with temperature
• Low leakage current
• Very low ESR for some types
• Stability after long periods of storage , without any reforming
The basic raw material is a high purity (greater than 99,99%) tantalum powder
with a very fine granulation, compressed to form a cylinder or a parallelipiped
constituting the anode of the capacitor (positive plate).
The pellet is then sintered at high temperature (1200°C to 2200°C), under
high vacuum (10–6 Torr), firstly to purify the powder and secondly to obtain a
strong mechanical structure by a welding of the particles.
All these characteristics allow tantalum capacitors to be commonly used either in large volume markets like mobile phones or computers, or in specific
High-Rel applications such as space, aerospace and military.
The insulating part is obtained by anodization to a depth of the tantalum
surface which forms a tantalum pentoxide film (Ta2O5) with a thickness of
about 16 angstroms per anodization volt. The dielectric coefficient is between
21 and 27 depending upon the anodization conditions.
Its main uses are found in the following functions:
• Filtering
• RC time constant
• Bypass
• Energy storage
• Coupling
Tantalum capacitors can be divided into two main families and several subfamilies:
Solid tantalum capacitors:
• Solid MnO2
- Metal cases
- Molded cases
- SMD
WET ELECTROLYTE: CATHODE AND ENCAPSULATION
In this case, the cathode is formed by a sulphuric acid solution. The anodized
tantalum pellet is impregnated with this solution and then placed in a silver
or tantalum case, into which some equivalent gelled solution have been
previously deposited.
Wet tantalum capacitors:
• Silver cases
• Tantalum cases
The case is then crimped on the internal PTFE gasket to make the sealing.
The final steps are welding (CT79), soldering (CT9) or elastomer seal (CT4)
depending on the capacitors.
SOLID ELECTROLYTE: CATHODE AND ENCAPSULATION
• Solid Polymer
- SMD
In this case, the cathode is formed either by managanous dioxide which is a
grey semi conductor or by polymer solution.
HOW TO USE THE SELECTION GUIDE
Solid MnO2 cathode is obtained by dipping the pellets into a manganous
nitrate water solution which impregnates the internal structure; this solution
is then decomposed in a high temperature oven to obtain manganous dioxide.
This operation is repeated several times. The nature and quality of this
semiconductor are important to some of the electrical parameters (especially
the serial resistance).
1 - The Technical Selection Guide can be used to select a product according to
the main technical requirements.
2 - The Classification according to specification makes the link between all
major standard specifications and the products.
3 - The Selection Guide by family has the same classification as in the
catalogue. You will find for each type the main features, the approvals and
the page number of the technical data sheet.
To finish the negative plate, a graphite coating and then a silver coating are
deposited on the outside surface of the manganous dioxide or conducting
polymer.
The positive nickel lead is welded on the tantalum wire and the negative lead
is either soldered for the products with axial leads or glued with a silver epoxy
for the SMD range.
BURN-IN - SORTING - INSPECTION
All the products are submitted to a final burn-in, with differing severities
depending upon the characteristics of each type (temperature, voltage,
duration).
Then follows the sorting, marking and inspection operations. It can be noted
that the procedures for these operations are the same for approved and non
approved parts (except the periodical tests).
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TANTALUM CAPACITORS
General information
TYPE IDENTIFICATION - ORDERING INFORMATION
CECC SPECIFICATIONS
THE COMPLETE IDENTIFICATION OF A PRODUCT IS MADE OF
Some of the products which are described in this catalogue are made to a CECC
specification; these documents give in detail the following information for each
type:
• The climatic, electrical and mechanical characteristics
• The test and inspection procedures
• The sampling methods and levels
• The tests periods
• The type (or model)
• The case size
• The rated capacitance
• The tolerance
• The rated voltage
• If applicable the CECC specification number
THE TYPE
It can be expressed with the commercial description (CTC21E C 33µF 10% 40V)
or the EXXELIA part number (TS22EC336K040F).
When applicable the CECC specification number should be indicated.
The reference specifications concerning the tantalum capacitors are the
following:
CECC 30 000 (NFC 83-100)
Generic specification: fixed capacitors
• Terminology
• Quality Assessment Procedures
• Test and inspection methods
THE CASE SIZE
It is indicated on the technical data sheets in front of each capacitance-voltage
value and is generally identified by a letter code . It is important to give this
information because there can be, for the same type, a standard range and an
extended range in which the same value will be available in two different sizes.
CECC 30 200 (NFC 83-112)
Sectional specification: tantalum capacitors
• Prefered characteristics
• Quality Assessment Procedures
• Test and inspection methods
THE RATED CAPACITANCE
It can be expressed:
• Directly in µF (eg: 47µF)
• Coded according to MIL specification, with:
- 2 digits number for the value
- A multiplying factor to obtain the capacitance in pF (power of 10)
Eg: 567 = 56.107 pF = 560µF
CECC 30 201 XXX
Detail specifications solid tantalum capacitors
• Detailed characteristics for each type
CECC 30 202 XXX
Detail specifications wet tantalum capacitors
• Detailed characteristics for each type
THE TOLERANCE
It can be expressed directly in % or identified by a code letter:
M = ±20%
K = ±10%
J = ±5%
CECC 30 800 (NFC 83-113)
Sectional specification: tantalum chip capacitors
• Prefered characteristics
• Quality Assessment Procedures
• Test and inspection methods
N.B.: the standard tolerance for tantalum capacitors is 20%; if no tolerance is
specified, it would be considered as 20%.
CECC 30 801 XXX
Detail specifications tantalum chip capacitors
• Detailed characteristics for each type
• The list of all the detail specifications is given in the selection guide,
with the corresponding type.
NB: Some of the products refer to specifications which are no longer published.
A 20% tolerance means in fact –20% to +20%.
THE RATED VOLTAGE
It is expressed directly in volts (V)
N.B.: 6,3V rated voltage can be coded as 6V.
OTHER SPECIFICATIONS
In addition to CECC approvals, some of the products are qualified to MIL
standard M39006/22, M39006/25, DSCC DWG No. 93026 and some others are
listed in ESA (European Space Agency) Preferred Parts Lists ESCC EPPL I or II.
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