MERITEK
Tantalum Capacitors with
Solid Electrolyte Surface Mount Molded Chip
TC Series
TC
series
is
designed
for
hybrid
circuit
and
low
profile
printed
circuit
board
applications
where
inductance
is
to
be
minimized
or
where
substrate
space
is
at
a
premium.
They
can
be
attached
to
substrates
or
circuit
boards
by
dip
soldering,
welding,
re-flow
soldering
or
other
conventional methods. These units have the further
advantage of being compatible with automatic assembly equipment
minus the problems associated with flexible terminal lead wires.
SPECIFICATIONS
Range 0.1µF to 220µF
Capacitance
Tolerance ±20%(M), ±10%(K)
C 1.0µF D.F 4.0%
1.5uF C
6.8µF
D.F 6.0%
10uF C
68µF
D.F 8.0%
Dissipation
Factor
(tan )
C 100µF D.F 10.0%
Leakage Current
Between 0.01CV and 0.5µA, whichever is
higher
Rated Voltage(VR)
4 6.3 10 16 20 25 35
T 85oC 4 6.3 10 16 20 25 35
Operating
Voltage(Vo) 85 oC <
T 125 oC 2.5 4 6.3 10 13 16 22
T 85oC 5.2 8 13 20 25 32 44
Surge
Voltage(Vs) 85 oC <
T 125 oC 3.2 5 8 13 16 20 28
Operating Temperature -85oC to 125oC
CAPACITANCE AND VOLTAGE RANG
E
W.V
Cap(µF) 4 6.3
10 16 20
25 35
0.10 104 A
0.15 154 A
0.22 224 A
0.33 334 A A
0.47 474 A A A,B
0.68 684 A A A,B A,B
1.0 105 A A A,B A,B A,B
1.5 155 A A,B A,B A,B B,C
2.2 225 A A A,B A,B A,B B,C B,C
3.3 335 A A ,B A,B A,B A,B,C B,C B,C
4.7 475 A,B A ,B A,B A,B,C B,C B,C C,D
6.8 685 A,B A ,B A,B,C B,C B,C C,D C,D
10 106 A,B A,B,C A,B,C A,B,C B,C,D C,D D
15 156 A,B,C B,C B,C B,C,D C,D C,D D
22 2 26 A,B,C B,C B,C,D C,D C,D D
33 336 B,C B,C,D C,D C,D D
47 476 B,C,D B,C,D C,D D D
68 686 C,D C,D C,D D
100 107 C,D C,D D
150 157 D D D
220 227 D D
330 337 D D
Load Life: 2000 hrs +85oC (+185oF) and rated voltage
Capacitance change max
:Within +10% of initial value
Dissipation Factor : Within values specified above
Leakage Current : Within values specified above
Shelf Life:
After 2000 hrs no application of the rated working voltage
at 85 oC capacitor shall meet the requirements of above
"Load Life".
Temperature Characteristic
-55oC C : Within +0, -10% of initial value
tan : C 1.0µF within 6%
1.5 C 68µF within 8%
+85oC C : Within +10, -0% of initial value
tan
:
Within values specified above
I :
Within 10 times of specified above
+125oC C : Within +15, -0% of initial value
tan
:
Within values specified above
I
:
Within 12.5 times of specified above
Humidity Test: at 40oC, 90-95% humidity, 500 hrs no voltage
C : Within +5% of initial value
tan : Within values specified above
I
:
Within values specified above
Failure Rate : 1 % / 1000hrs
Surge Voltage Test: at 85oC
C : Within +5% of initial value
tan : Within values specified above
I : Within values specified above
Resistance to Soldering Heat
(Solder reflow 260oC, 10 sec or solder dip 260oC, 5 sec)
C : Within +5% of initial value
tan
: Within values specified above
I
: Within values specified above
Tantalum Capacitors with
Solid Electrolyte
TC Series
PART NUMBER SYSTEM
TC 105 M 35 B
Meritek Series
Capacitance
CODE 473 ~ 683 105 ~ 685 106 ~ 227
µF
0.047~0.068
1.0 ~ 6.8
10 ~ 220
Tolerance
CODE M K
±20% ±10%
Rated Voltage
CODE 04 06 10 16 20 25 35
4 6.3
10
16
20
25
35
Size
CODE A B C D
3216 3528
6032 7343
Allowed Ripple Voltage
W.V
Cap(µF)
4 6.3 10 16 20 25 35
0.10 104 3.5
0.15 154 3.5
0.22 224 3.5
0.33 334 3.5 3.5 3.5
0.47 474 3.5 3.5 3.5
0.68 684 3.5 3.5 3.5 3.5
1.0 105 3.5 3.5 3.5 3.5 3.5
1.5 156 3.2 3.2 3.2 3.2 3.2 3.2
2.2 226 2.9 2.9 2.9 2.9 2.9 2.9 2.9
3.3 335 2.6 2.6 2.6 2.6 2.6 2.6 2.6
4.7 475 2.4 2.4 2.4 2.4 2.4 2.4 2.4
6.8 685 2.1 2.1 2.1 2.1 2.1 2.1 2.1
10 106 1.9 1.9 1.9 1.9 1.9 1.9
15 156 1.7 1.7 1.7 1.7 1.7
22 226 1.5 1.5 1.5 1.5
33 336 1.4 1.4 1.4
47 476 1.3 1.3
68 686 1.1
100 107 1.0
Surface
Mount
Molded
Chip
MERITEK
MERITEK
Tantalum Capacitors with
Solid Electrolyte
TCSeries
CASE SIZE AND DIMENSIONS
TC series
Size Code L1 L2 W H a b
A A
3.2 +0.2
-0.1 2.9± 0.1 1.6± 0.2 1.7± 0.2 0.8± 0.3 1.2± 0.2
B T
3.5± 0.3 3.2± 0.1 2.8± 0.3 1.9± 0.3 0.8± 0.3 2.2± 0.2
C C
6.0± 0.3 5.8± 0.1 3.2± 0.3 2.5± 0.3 1.3± 0.3 2.2± 0.2
D D
7.3± 0.3 7.1± 0.1 4.3± 0.3 2.8± 0.3 1.3± 0.3 2.4± 0.2
REEL DIMENSION AND PACKING
Surface
Mount
Molded
Chip
MERITEK
Tantalum Capacitors with
Solid Electrolyte
TC Series
REEL DIMENSION AND PACKAGING
Size A Size B Size C Size D
A 1.82±0.1 2.95±0.1 3.69±0.1 4.8±0.1
B 3.42±0.1 5.03±0.1 6.49±0.1 7.79±0.1
C 8.0±0.3 12.0±0.3 12.0±0.3 12.0±0.3
D 3.5±0.05 5.50±0.05 5.50±0.05 5.5±0.05
E 4.7 max 6.2 max 7.3 max 8.4 max
F 4.0±0.1 4.0±0.1 8.0±0.1 8.0±0.1
G 2.0±0.05
H 4.0±0.1
∅J 1.5±0.1,-0.0
t 0.23±0.02 0.23±0.02 0.28±0.02 0.28±0.2
K 1.92±0.1 2.1±0.2 2.75±0.2 3.0±0.2
Carrier Tape Embossed
Cover Tape Polyester
Quantities Per Packaged Reel
Series Size Reel Inner box Outer box
A 2,000 5 Reel 50Reel
B 2,000 5 Reel 50 Reel
C 500 4 Reel 40 Reel
TC
D 500 4 Reel 40 Reel
Surface
Mount
Molded
Chip
MERITEK
Tantalum Capacitors with
Solid Electrolyte
TC Series
1. Construction
The Tantalum Capacitor is a polar electrolytic capacitor. The
anode is a porous body of sintered tantalum powder. A layer
of tantalum pent oxide is formed over the whole sintered
anode surface by an electrolytic oxidation process. This oxide
layer, which has a high dielectric constant (ε=23), functions as
the dielectric medium of the capacitor. The final thickness of
the layer determines the rated working voltage of the
capacitor. Manganese dioxide, a solid semi-conducting
electrolyte, is deposited in the porosity and on the external
surface of the formed anode to serve as the cathode.
Electrical connection to the cathode is effected by applying a
metallic coating on the Mn02 layer. As a result of the high
stability of the oxide layer the leakage current of the capacitor
is very small, even after prolonged storage. The use of the
solid semi-conducting electrolyte guarantees high stability of
the electrical properties over long periods of time and over a
wide ran
g
e of tem
p
eratures and fre
q
uenc
y
.
2. Properties and Operational Attention
Surge voltage(Vs)
This is the highest voltage that may be applied to a capacitor
for short periods of time. The surge voltage may be applied
up to 10 times in an hour for periods of up to 30s at a tim e.
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.
Superimposed AC voltage (VRMS)
This is the maximum r.m.s. Alternating voltage superimposed
on a DC voltage, that may be applied to a capacitor. The sum
of the DC voltage and the surge value of the superimposed AC
voltage must not exceed the maximum continuous voltage.
Reverse polarity voltage
The peak reverse polarity voltage applied to the capacitor must
not exceed:
At +20oC (+68oF) 10% of Rated Voltage
At +85oC (+185oF) 5% of Rated Voltage
or 1 V, whichever is
g
reater.
If higher voltages of reverse polarity occur, then two
capacitors with the same nominal capacitance and rated
voltage should be connected in series in such a way as to
form a non-polar combination. When DC voltage are
switched, measures must be taken to ensure that the reverse
polarized capacitor is not overloaded. This is necessary in
order to avoid a reduction in its life ex
p
ectanc
y
.
Switching operation - low impedance circ
u
its
Low impedance circuits are defined as those having
resistance in series with the capacitor measuring less than 3
ohms/volt of rated DC voltage. Such circuits can subject the
capacitor to surge currents during switching operations. The
effect of surge currents is to cause rapid overheating in the
capacitor leading to failure through excessive leakage current
of short circuit. Dependent upon available power, the short
circuit failure mode can lead to ignition or burning of the
capacitor. Care must be taken therefore to limit charging or
discharging currents to 300mAmps maximum. Where in-
series resistance is not possible due to application limitations,
the rated capacitor working voltage should be derated by a
minimum of the half. See fi
g
ures on o
pp
osite
p
a
g
e.
Leakage current(I)
The leakage current is measured +20oC (+68oF) with the
rated voltage applied. A protective resistance of 1000Ω is
connected in a series with the capacitor in the measuring
circuit. Five minutes after application of the rated voltage
the leakage current must not exceed the maximum values,
indicated in the data.
Reforming is unnecessary even after prolonged periods
without application of voltage.
Protection resistance:
The failure rate of a tantalum capacitor depends on
internal resistance of the applied voltage supply.
It is recommended that the internal resistance must
be equal or greater than 3M. The capacitors
reliability decreases for the smallest ratio (see
curve). If the applied voltage is smaller than 50% of
rated voltage (VR), the protection resistance can be
eliminated.
Surface
Mount
Molded
Chip
MERITEK
Tantalum Capacitors with
Solid Electrolyte
TC Series
3. Operational Reliability
Continuous life testing of DEC solid tantalum capacitors is
carried out at various temperatures from -55*C to +1 25'C and
with application of various proportions of rated voltages.
These tests are carried out for three reasons:
1. 2,000 hr. tests carried out as part of our regular Quality
Assurance program.
2. 10,000-hr continuation tests to obtain reliability data.
3. Other test under derated conditions to obtain supplementary
information to 1 and 2.
These data are kept under continuous review by means of
an attribute analysis. In addition of the results obtained to
data is given below and this is being continuously updated
and augmented. It will however, be appreciated that a
substantial amount of data is necessary before a complete
picture can be built up of the variations of failure rate with
case size and voltage rating.
Results to data indicate the mean failure rate at 60%
confidence varies from approximately 0.2 percent/1,000 hrs.
for capacitors tested at 700C 314 rated volts to approximately
0.7 percent/1,000 hrs, when tested at 125*C at 3/4 rated
voltage.
These figures are total failure rates and include parametric
and catastrophic failure : the former being the majority. (A
parametric failures is any capacitor where on parameter
exceeds the QA. test limits.)
These results are obtained in circuits of impedance of < 3
ohms and under these conditions the higher voltage ratings
have higher failure rates than the lower voltage ratings. It
would be expected that in circuits of constant ohms per volt
this difference would be eliminated. Figures for particular
cases can be provided. Failure rate at the 60% confidence
level is based on the upper one-sided failure rate for the
exponential failure distribution, 60% being chosen as the
most representative true reliability figure related to sampling
procedure.
Analyses based on the Weibull distribution have shown that
failure rate decreases with time.
The solid tantalum capacitor has a limited ability to withstand
surges (15% to 30% of rated voltage). This is in common with
all electrolytic capacitors and is due to the fact that these
operate at electrolytic capacitors and is due to the fact that
these operate at very high electrical stress within the oxide
layer. In the case of "solid" electrolytic capacitors this is
further complicated by the limited selfhealing ability of the
manganese dioxide semiconductor.
It is important to ensure that the voltage across the
terminals of the capacitor does not exceed the surge voltage
rating at any time. This is particularly so in low impedance
circuits where the capacitor is likely to be subjected to the full
impact of surges especially in even a slightly inductive circuit.
Even an extremely short duration spike is likely to cause
damage.
Effect of surges
Surface
Mount
Molded
Chip
MERITEK
Tantalum Capacitors with
Solid Electrolyte Surface Mount Molded Chip
TC Series
