Tantalum Capacitor ( SCL Series )
The SCL series is a slim type of conventional SCS series.
Its ability is same as SCS series even though it has thinner thickness that is
max. 64% of SCS series.
General Features
- Environment-Friendly (Pb-free) tantalum capacitor
- Low-profile case size
- Reduced thickness up to 64% of SCS series
- Molded Case available in four case codes.
- Compatible with automatic pick and place equipment.
- Meets or Exceeds EIA standard 535BAAC .
- Terminations: 100 % Sn , RoHS compliant.
Applications
- Reduced electronic equipments : mobile phone, PDA, MP3, LCD module etc. - Smoothing
- Circuit of DC-DC Converters & Output side of AC-DC Converters
- De-Coupling Circuit of High Speed ICs & MPUs
- Various Other High Frequency Circuit Applications
Part Numbering
TC SCL 0J 106
M
S
A
R
0
1
●
2
●
3
●
4
●
5
6
● ● ● ●
7
8
Abbreviation of Tantalum Capacitor
Type of Series
Capacitance Tolerance
Case size
Rated Voltage
Packing
Capacitance Tolerance
Packing Polarity
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7
● PACKING
Symbol
Packing Code
7 inch
A
C
13 inch
8
● PACKING POLARITY
Taping and
Taping and
Bulk
L
R
B
Reel for Chip
Reel for Chip
Direction
of Feed
Direction
of Feed
Tape
+ Polarity Mark
+ Polarity Mark
APPEARANCE AND DIMENSON
0
DIMENSION (mm)
W2
Code EIA Code
L
W1
H
Z
2012-09
3216-12
3528-12
2.0 ±0.2
3.2 ±0.2
3.5 ±0.2
1.25 ±0.2
1.6 ±0.2
2.8 ±0.2
0.9 ±0.1
1.2 ±0.1
2.2 ±0.1
0.95max
1.2max
1.2max
0.5 ±0.2
0.8 ±0.3
0.8 ±0.3
R
S
T
6032-15
7343-18
6.0 ±0.3
7.3 ±0.3
3.2 ±0.3
4.3 ±0.3
2.2 ±0.1
2.4 ±0.1
1.5max
1.8max
1.3 ±0.3
1.3 ±0.3
V
W
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● Standard value and Case size
Ultra Flat Low Profile Tantalum Chip Capacitors
STANDARD VALUE AND CASE SIZE
W.V
475
4V
(0G)
6.3V
(0J)
10V
(1A)
16V
(1C)
Cap.(㎌)
4.7
6.8
685
106
156
226
336
476
686
107
157
(S)
(T)
10
15
(S)
22
33
S,T
S,T
T
S
S,T
T
(S),(T)
T
(T)
(T)
47
68
(T)
(T)
(T)
100
150
()Under Development
New products (2005.01~) are show n in blue.
Environmentally friendly tantalum chip capacitors w ith lead-free terminal/Conform to RoHS
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RELIABILITY TEST CONDITION
NO
ITEMS
TEST CONDITION
PERFORMANCE
-55℃ ~ +85℃
∼
2.5 35V
RATED DC VOLTAGE
1
±
MEASURING FREQUENCY : 120 12Hz
CAPACITANCE RANGE
∼
∼
㎌
MEASURING VOLTAGE : 0.5Vrms + 0.5 2V DC
MEASURING CIRCUITS : EQUIVALENT SERIES
CIRCUIT
0.1 330
CAPACITANCE
2
3
TOLERANCE ON CAP.
±
±
10%, 20%
MEASUREMENT SHALL BE MADE UNDER THE
SAME CONDITIONS AS THOSE GIVEN FOR THE
MEASUREMENT OF CAPACITANCE.
TANGENT OF LOSS
ANGLE
THE RATED DC VOLTAGE SHALL BE APPLIED
TO TERMINALS ACROSS THE TEST CAPACITOR
Cx, BY THE METHOD AS SHOWN BELOW. THE
LEAKAGE CURRENT SHALL THEN BE
MEASURED AFTER CHARGE FOR 5 MIN.
MEASURING CIRCUITS
㎂
0.01CV or 0.5
WHICHEVER IS GREATER
S2
RS
A
S
+
+
-
1
V
LEAKAGE CURRENT
4
C
x
-
WHERE
Ω
RS : STANDARD RESISTOR(PROTECTIVE R :1K )
: DC VOLTMETER OR ELECTRONIC
VOLTMETER
V
S1 : DC POWER SUPPLY SWITCH
S2 : PROTECTIVE SWITCH FOR A AMMETER
CX : TEST CAPACITOR
: DC AM-METER FOR LEAKAGE CURRENT
A
AC VOLTAGE(0.5Vrms OR LESS) OF A
FREQUENCY SPECIFIED ON NEXT PAGE SHALL
BE APPLIED AND THE VOLTAGE DROP
ACROSS CAPACITOR TERMINALS SHALL BE
MEASURED
THE IMPEDANCE SHALL BE CALCULATED BY
THE FOLLOWING EQUATION.
IMPEDENCE
5
E
Impedance Z
=
I
WHERE
E : VOLTAGE DROP ACROSS THE CAPACITOR
TERMINALS
I : CURRENT FLOWING THROUGH THE
±
CAPACITOR (FREQUENCY : 100 10kHz)
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NO
ITEMS
TEST CONDITION
PERFORMANCE
THE CAPACITOR SHALL BE SUBJECTED IN TURN TO PROCEDURES SPECIFIED
BELOW
CHANGE IN
TANGENT OF
LOSS ANGLE
(D.F.)
LEAKAGE
CURRENT
STEP
1
TEMP.
DURATION
CAPACITANCE
Δ
C )
(
WITHIN
WITHIN
ORIGINAL
LIMIT
TABLE 1 ON
PAGE 13
± ℃
2
25
SPECIFIED
TOLERANCE
TEMPERATURE
STABILITY
0
- 10 TO 0% OF
INITIAL VALUE
TABLE 1 ON
PAGE 13
6
2
3
2 HOURS.
25 MIN.
N/A
℃
-55
-3
± ℃
2
25
WITHIN 10X
ORIGINAL
LIMIT
0 TO +10% OF
INITIAL VALUE
TABLE 1 ON
PAGE 13
+3
4
5
2 HOURS.
2 HOURS.
℃
+85
0
WITHIN 12.5X
ORIGINAL
LIMIT
0 TO +12% OF
INITIAL VALUE
TABLE 1 ON
PAGE 13
+3
0
℃
+125
THE CAPACITOR SHALL BE SUBJECTED TO THE SURGE
VOLTAGE AS SPECIFIED ON NEXT PAGE IN A CYCLE OF 6
±
±
0.5 MIN. WHICH CONSISTS OF 30 5 SEC. FOLLOWED BY A
DISCHARGE PERIOD OF APPROX. 5 MIN 30 SEC. AT A
℃
TEMPERATURE OF +85 FOR 1,000 CYCLES.
AND THE CAPACITOR SHALL BE STORED UNDER
STANDARD ATMOSPHERIC CONDITIONS TO OBTAIN
THERMAL EQUILIBRIUM AFTER MEASUREMN\ENT.
MEASURING CIRCUIT
+
R1
S
V
SURGE TEST
7
+
Cx
R2
-
-
WHERE
Ω
R1 : PROTECTIVE SERIES RESISTOR (33 )
Ω
R2 : DISCHARGE RESISTOR(33 )
Cx : TEST CAPACITOR
V : DC VOLTAGE
S : SWITCH
RATED VOLTAGE 2.5V 4V 6.3V 10V 16V 20V 25V 35V
SURGE VOLTAGE 3.1V 5V 8V 13V 20V 26V 32V 45V
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NO
ITEMS
TEST CONDITION
PERFORMANCE
℃
℃
WHEN OPERATING AT HIGH TEMPERATURE RANGE FROM 85 to 125 , THE
OPERATION SHALL BE CARRIED OUT AT A DERATED VOLTAGE OR LESS
℃
DERATING VOLTAGE Vt AT ANY TEMPERATURE BETWEEN 85 AND 125
℃
SHALL BE CALCULATED BY THE FOLLOWING EQUATION
100
VOLTAGE
DERATING %
80
60
40
20
0
DERATING
VOLTAGE
8
-55
0 20
85
125
OPERATING TEMPERATURE
− Vr − Vd
40
=
Vr
(T
−
85)
℃
WHERE Vt : DERATED VOLTAGE AT ANY TEMP. BETWEEN 85 to 125
℃
Vr : RATED VOLTAGE
℃
Vd : DERATED VOLTAGE AT 125
APPLY PRESSURE IN THE DIRECTION OF THE
THERE SHALL BE NO
EVIDENCE OF
ARROW AT A RATE OF ABOUT 0.5MM/SEC. UNTIL IT
REACHES A BENT WIDTH OF 3MM AND HOLD FOR 30 MECHANICAL DAMAGE.
SEC. THE TEST BOARD SHALL BE
OTHER PROCEDURES REFER TO
. FOR ELECTRICAL
IEC 40(S) 541
.
CHARACTERISTICS
IEC 40(S) 541
SHALL SATISFY THE
INITIAL REQUIREMENT.
IF THERE ARE
Pressure rod
10
20
ELECTRODES ON BOTH
SURFACES, IT SHALL
SATISFY THE ABOVE
REQUIREMENT ON
ELECTRODE
(TERMINAL
STRENGTH)
9
Board
WHICHEVER SURFACE
IT MAY BE FIXATED ON.
±
45 2
±
45 2
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NO
ITEMS
TEST CONDITION
PERFORMANCE
A STATIC LAOD OF 19.6N USING A R0.5 SCRATCH
TOLL SHALL BE APPLIED ON THE CORE OF THE
THERE SHALL BE NO
EVIDENCE OF
COMPONENT AND IN THE DIRECTION OF THE ARROW MECHANICAL DAMAGE.
AND HOLD FOR 5 SEC. THE TEST BOARD SHALL BE ELECTRICAL
. HOWEVER THE BASE MATERIAL SHALL CHARACTERISTICS
IEC 40(S)541
BE G-10 or FR-4 (ANSI GRADE)
SHALL SATISFY THE
INITIAL REQUIREMENT.
IF THERE ARE
Board
ADHESION
(ELECTRODE
PEELING
Scratch tool
R0.5
ELECTRODES ON BOTH
SURFACES, IT SHALL
SATISFY THE ABOVE
REQUIREMENT ON
10
STRENGTH)
WHICHEVER SURFACE
IT MAY BE FIXATED ON.
Chip
Chip
A ROD OF 9.8N USING A R0.5 PRESSURE ROD SHALL THERE SHALL BE NO
BE APPLIED TH THE CENTER IN THE DIRECTION OF
THE ARROW AND HOLD FOR 10 SEC
EVIDENCE OF
MECHANICAL DAMAGE.
ELECTRICAL
CHARACTERISTICS
SHALL SATISFY THE
INITIAL REQUIREMENT.
R0.5
Pressure
CORE BODY
STRENGTH
11
Chip
W
0.5L
L
＞
L
W
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NO
12
ITEMS
TEST CONDITION
PERFORMANCE
℃
SOLDER TEMPERATURE : 245±5
DIP TIME : 3±0.5 SEC.
MORE THAN 95% OF THE
TERMINAL SURFACE MUST BE
SOLDERED NEWLY.
SOLDERABILITY
[Pb-free]
SOLDER : Sn-3Ag-0.5Cu
FLUX : ROSIN(KSM2951)+Solvent(ISA)
(ROSIN 25WT%)
∼
℃
PREHEAT : 100 110 FOR 30 SEC.
CHANGE IN CAPACITANCE :
±5% OF INITIAL VALUE
℃
TEMPERATURE : 260±5
DIP TIME : 10 ±1 SEC
TANGENT OF LOSS ANGLE :
LEAKAGE CURRENT :
ALL SAMPLES SHALL BE DIPPED IN SOLDER
BATH. MEASUREMENT SHALL BE MADE AT
ROOM TEMPERATURE AFTER 1~2 HOURS OF
COOLING TIME.
APPEARANCE :
THERE SHALL BE NO EVIDENCE
OF MECHANICAL DAMAGE. .
RESISTANCE
TO SOLDERING
HEAT
13
CONVECTION REFLOW
Change in capacitance:
±10% of initial value
Tangent of loss angle:
∼
℃
PREHEAT : 150 190 FOR 130 SEC.
℃
PEAK TEMPERATURE : 260±5 FOR 10 SEC.
METHOD : SAMPLES SHALL BE PASSED
REFLOW 3 TIMES.
Leakage Current :
MEASUREMENT SHALL BE MADE AT ROOM
∼
TEMPERATURE AFTER 3 4 HOURS OF
COOLING TIME.
THERE SHALL BE NO EVIDENCE
OF MECHANICAL DAMAGE. AND
MARKING SHALL BE LEGIBLE.
ELECTRICAL CHARACTERISTICS
SHALL SATISFY THE INITIAL
REQUIREMENT.
IMMERSION CLEANING
RESISTANCE
TO
THE CAPACITOR SHALL BE CLEANED AT
ROOM TEMPERATURE FOR 60sec. USING
ISOPROPYL ALCOHOL
14
CLEAN TEST
VIBRATION
FREQUENCY : 10 to 55 to 10Hz (in 1 min.) MAX CHANGE IN CAPACITANCE :
AMPLITUDE : 1.5 mm. WITHIN : ±5% OF THE INITIAL
DIRECTION OF VIBRATION : IN DIRECTION OF VALUE
X,Y AND Z AXES
TANGENT OF LOSS ANGLE :
TIME : 2 HOURS EACH DIRECTION AND 6
HOURS IN TOTAL
LEAKAGE CURRENT :
DURING THE LAST 30 min. OF VIBRATION IN
EACH DIRECTION, THE CAPACITANCE SHALL
BE MEASURED 3 TO 5 TIMES.
FOR OTHER PROCEDURES REFER TO IEC
Pub. 68-2-6.
APPEARANCE :
15
THERE SHALL BE NO EVIDENCE
OF MECHANICAL DAMAGE. .
MOUNTING METHOD
SOLDER
ALUMINA
BOARD
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NO
16
ITEMS
TEST CONDITION
PERFORMANCE
THE CAPACITOR SHALL BE STORED AT A
CHANGE IN CAPACITANCE :
± ℃
TEMPERATURE OF 40
±
2
AND RELATIVE
WITHIN : 10% OF THE
±
HUMIDITY OF 90% TO 95% FOR 500 8 HOURS.
ELECTRICAL MEASUREMENTS SHALL BE MADE
AFTER BEING BOARD AT ROOM TEMPERATURE
INITIAL VALUE
MOISTURE
TANGENT OF LOSS ANGLE :
RESISTANCE
∼
FOR 1 2 HOURS. FOR OTHER PROCEDURES
LEAKAGE CURRENT :
REFER TO IEC Pub. 68-2-2.
CHANGE IN CAPACITANCE :
TEMPERATURE
VOLTAGE
TIME
±
WITHIN : 10% OF THE
℃
85
RATED VOLTAGE 2,000 HOURS
INITIAL VALUE
DERATED
TANGENT OF LOSS ANGLE :
℃
125
2,000 HOURS
VOLTAGE
LOAD LIFE
17
LEAKAGE CURRENT :
THE CAPACITOR SHALL BE PLACED IN A
CIRCULATING AIR OVEN AT AN AMBIENT.
ELECTRICAL MEASUREMENTS SHALL BE MADE
AFTER BEING STORED AT ROOM TEMPERATURE
FOR 1~2 HOURS.
THE CAPACITOR SHALL BE STORED AT A
ELECTRICAL
± ℃
±
TEMPERATURE OF -55 2 FOR 240 8 HOURS
STORAGE AT
LOW
CHARACTERISTICS SHALL
SATISFY THE INITIAL
REQUIREMENT.
WITHOUT LOAD.
18
ELECTRICAL MEASUREMENTS SHALL BE MADE
AFTER BEING STORED AT ROOM TEMPERATURE
FOR 1~2 HOURS
TEMPERATURE
STEP
1
TEMPERATURE
0
TIME
CHANGE IN CAPACITANCE :
℃
℃
±
30 3 MIN
-55
25
-3
±
WITHIN : 10% OF THE
±
±
15 2 MIN
2
3
4
5
INITIAL VALUE
TANGENT OF LOSS ANGLE :
0
℃
℃
±
30 3 MIN
125
25
-3
Thermal Shock
19
LEAKAGE CURRENT :
±
±
15 2 MIN
5
THE CAPACITOR SHALL BE SUBJECTED TO EACH
SPECIFIED TEMPERATURE FOR EACH SPECIFIED
TIME IN THE TABLE ABOVE
THESE 4 STEP CONSTITUTES ONE CYCLES SHALL
BE PERFORMED CONTINUOUSLY
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PACKAGING
● MARKING
▶ S CASE
A106
Capacitance Code
DC Working Voltage
(G:4V J:6.3V A:10V C:16V D:20V)
(White)
Polarity
▶ T CASE
㎌
in
Capacitance
10
20V
DC Working Voltage
(White)
Polarity
▶ V,W CASE
(White)
Polarity
㎌
in
Capacitance
10
35V
DC Working Voltage
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▶ R CASE
JA
Capacitance Code
DC Working Voltage
(G:4V J:6.3V A:10V C:16V D:20V)
(White)
Polarity
Capacitance Range
1 DIGIT
2 DIGIT
㎌
A Small Letter
A Capital Letter
A Capital Letter
A Small Letter
A Small Letter
A Capital Letter
< 1.0
㎌≤
㎌
1.0
Cap.< 10
≥
㎌
10
【
】
Code Reference
V
4
6.3
10
16
20
㎌
0.22
0.33
0.47
0.68
1.0
1.5
2.2
3.3
4.7
6.8
10
gj
jj
aj
cj
gs
gw
Ga
js
as
aw
Aa
cs
ds
jw
Ja
cw
Ca
dw
Gj
Jj
Aj
An
As
Cj
Gn
Gs
Gw
GA
Jn
Js
Jw
JA
Cs
AA
15
22
GJ
JJ
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● EMBOSSED PLASTIC TAPE
Embossed
Carrier
Right hand
Orientation available
The tantalum chip capacitors shall be packaged
in tape and reel form for effective use.
- Tape : Semitransparent embossed plastic
- Cover tape : Attached with press, polyester
- The tension of removing the cover tape,
∼
F=10 70g
Embossed
D1
A
P1
D2
t
P0
P2
K
W±0.3
(±0.01
2)
F±0.1
(±0.00
4)
E±0.1
(±0.00
4)
PO±0.1
(±0.00
4)
P1±0.1
(±0.00
4)
P2±0.1 D+0.1
(±0.00 (+0.00 D2Min.
A±0.2
(±0.00
8)
B±0.2
(±0.00
8)
K±0.2
(±0.00
8)
1
Case
Code
t
4)
4)
ø0.6
0.25
0.98
1.80
1.0
J*
(0.024) (0.0098) (0.039) (0.071) (0.039)
1.4
2.3
1.1
R*
S
(0.055) (0.091) (0.043)
8
3.5
4
0.2
(0.008)
(0.315) (0.138)
(0.157)
ø1.0
(0.039)
1.9
3.5
1.3
(0.075) (0.138) (0.051)
1.75
2
4
ø1.5
(0.069)
(0.079) (0.157) (0.059)
3.3
3.8
1.3
T
(0.130) (0.150) (0.051)
0.3
3.7
6.4
1.6
V
(0.012) (0.146) (0.252) (0.063)
12
5.5
8
ø1.5
(0.472) (0.217)
(0.315)
(0.059)
4.8
7.7
1.9
W
(0.189) (0.303) (0.075)
Cover Tape
F
Removal speed
50mm/sec
˚
15
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● REEL DIMENSION
Tape
Width
A±2
(±0.079)
C±0.5
D±0.5
B±051
t+0.5
(±0.020)
N Min.
R
(±0.020) (±0.020) (±0.020)
ø70
(2.756)
10
(0.394)
8mm
12mm
8mm
ø178
(7)
ø13
(0.512)
ø21
(0.827)
2
2
0.99
(0.079)
(0.079)
(0.039)
ø60
(2.362)
14
(0.551)
10
(0.394)
ø330
(13)
ø80
(3.150)
ø13
(0.512)
ø21
(0.827)
2
2
0.99
(0.079)
(0.079)
(0.039)
14
(0.551)
12mm
Case Size
reference
180mm(7") reel
330mm(13") reel
4,000pcs
3,000pcs
2,000pcs
500pcs
-
J
-
R
8,000pcs
2,500pcs
S, T
V, W
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APPLICATION MANUAL
The operational attentions to the use of the tantalum capacitors are as follows:
- Electrical
- Environmental
- Conditions for mounting on equipment and circuit boards
- Mechanical vibration, shock
If the tantalum capacitors are used without satisfying any one of these conditions, the probability of
short-circuiting, leakage current, ignition or other problems to occur increases. To avoid such
problems, observe the following precautions when using the tantalum capacitors.
● OPERATING VOLTAGE
▶ The voltage derating factor should be as great as possible. Under normal conditions, the operating
voltage should be reduced to 50% or less of the rating. It is recommended that the operating
voltage be 30% or less of the rating, particularly when the tantalum capacitors are used in a low-
impedance circuit (see Figs. 1, 2, and 3).
▶ For circuits in which a switching, charging, discharging, or other momentary current flows, it is
recommended that the operating voltage be 30% or less of the rating, with a resistor connected in
series to limit the current to 300 mA or less.
▶ When the tantalum capacitors are to be used at an ambient temperature of higher than 85℃, the
recommended operating range shown in Fig. 3 should not be exceeded.
Power supply filter
Power supply bypass
+
+
-
Power
+
+
IC
supply
~
circuit
-
Fig. 1
Fig. 2
100
80
60
40
20
0
-55
-40 -20 0 20 40 60 85 100 125
OPERATING TEMPERATURE
Fig. 3
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● RIPPLE
The maximum permissible ripple voltage and current are related to the ratings case size.
Please consult us detail in formations.
▶ Ripple Current
The maximum permissible ripple current, IMAX, is calculated as follows :
PMAX
=
IMAX
ESR(f)
where:
IMAX : Maximum permissible capacitor ripple current (Arms).
PMAX : Maximum permissible capacitor power loss (W).
Varies with the ambient temperature and case size.
Calculated according to Table
ESR(f): Capacitor equivalent series resistance (Ω).
Since the ESR(f) value varies with the ripple frequency, however, the following correction must be
made in accordance with the operating frequency (see Fig. 4).
·
(f) =
ESR
(120)
ESR
K
K : Coefficient for the operating frequency (Fig. 4).
δ
Tan
δ ·
(120) = Tan
ESR
Xc =
π
2 fC
where:
ESR(120) : Equivalent series resistance at 120 Hz (Ω).
Xc : Capacitive reactance at 120 Hz (Ω).
C : Electrostatic capacitance at 120 Hz (μF).
f : Operating frequency (Hz).
Table.1 Maximum permissible power loss values (PMAX) by case size
PMAX(W)
Ambient
℃
temperature (
)
J
P
S
T
U
V
25
55
85
0.015
0.010
0.005
0.015
0.010
0.005
0.030
0.019
0.010
0.030
0.019
0.010
0.030
0.019
0.010
0.050
0.032
0.018
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Table.2 Hz VS K
10
Frequency
120
K
1.0
1.0
0.1
400
0.8
1k
0.65
0.50
0.45
0.43
0.40
0.35
10k
20k
40k
0.01
100
1K
10K
100K
1M
100k
1M
FREQUENCY(Hz)
Fig.4 Correction Coefficient(K)
▶ Ripple Voltage
If an excessive ripple voltage is applied to the tantalum capacitors, their internal temperature
rises due to Joule heat, resulting in the detriment of their reliability.
▷ The tantalum capacitors must be used in such a conditions that the sum of the Working Voltage
and ripple voltage peak values does not exceed the rated voltage (Fig. 5)
▷ Ensure that an reverse voltage due to superimposed voltages is not applied to the capacitors.
▷ The maximum permissible ripple voltage varies with the rated voltage. Ensure that ripple voltage does
not exceed the values shown in Figs 6 and 7. If, however, the capacitors are used at a high
temperature, the maximum permissible ripple voltage must be calculated as follows:
Vrms(at 55℃) = 0.7 x Vrms(at 25℃)
Vrms(at 85℃) = 0.5 x Vrms(at 25℃)
Vrms(at 125℃) = 0.3 x Vrms(at 25℃)
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100
10
100
10
50V
35V
25V
20V
16V
10V
6.3/7V
4V
50V
35V
25V
20V
16V
10V
6.3/7V
4V
2.5V
2.5V
100
100
100
100
10
100
1
10
100
100
1
100
Frequency(Hz)
Frequency(Hz)
Fig.6 Maximum permissible ripple voltage
(P,A,B)
Fig.7 Maximum permissible ripple voltage
(C,D)
● REVERSE VOLTAGE
Solid tantalum capacitors are polarized device and may be permanently damaged or destroyed, if
connected with the wrong polarity.
▷ The tantalum capacitors must not be operated and changed in reverse mode. And also the
capacitors must not be used in an only AC circuit.
▷ The tantalum capacitor dielectric has a rectifying characteristics. Therefore, when a reverse
voltage is applied to it, a large current flows even at a low reverse voltage.As a result,it may
spontaneously generate heat and lead to shorting.
▷ Make sure that the polarity and voltage is correct when applying a multi-meter or similar testing
instrument to the capacitors because a reverse voltage or overvoltage can be accidentally
applied.
▷ When using the capacitors in a circuit in which a reverse voltage is applied, consult your local
SAMSUNG ELECTRO-MECHANICS agent. If the application of an reverse voltage is
unavoidable, it must not exceed the following values.
At 20°C: 10% of the rated voltage of 1 V, whichever smaller.
At 85°C: 5% of the rated voltage or 0.5 V, whichever smaller.
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● RELIABILITY OF TANTALUM CAPACITORS
▶ General
The failure rate of the tantalum capacitor varies with the digression ratio, ambient temperature, circuit
resistance, circuit application, etc.
Therefore, when proper selections are made so as to afford additional margins, higher reliability can
be derived from the tantalum capacitors. Some examples of actual failure rates are presented below
for your reference.
▶ Failure Rate Calculation Formula
The tantalum capacitors are designed to work at their basic failure
rates shown in Table 3 that prevail when the rated voltage is applied for 1000 hours at 85℃.
Table 3 Basic failure rate
TYPE
Classification
Basic failure rate
SCE,SVE
SCM,SVM
SCL
Low ESR type
Ultra-Miniaturization Type(0603)
Low-profile Type
1%/1000h
SCS,SVS
Small Type
SCN,SVN
PC*
Standard type
Conductive Polymer Type
▷ Failure rate calculation formula
λ
λ
use = 85 x KV x KR
λuse : Estimated capacitor failure rate under the operating conditions.
λ85 : Basic failure rate (Table 3)
KV : Failure rate correction coefficient by the ambient temperature and derating factor.
KR : Failure rate correction coefficient by the circuit resistance,
which is the series-connected resistance divided by the voltage applied to the capacitor.
This resistance is connected in series when the power supply side is viewed from the capacitor side.
K(derating factor)=operating voltage/rated voltage
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● RELIABILITY PREDICTION
Solid tantalum capacitors exhibit no degration failure mode during shelf storage and show a constantly
decreasing failure rate(i.e. , absence of wearout mechanism) during life tests. this failure rate is
dependent upon three important application conditions:DCvoltage, temperature, and circuit impedance.
Estimates of these respective effects are provided by the reliability nomograph.(Figure 8.)
The nomograph relates failure rate to voltage and temperature while the table relates failure rate to
impedance. These estimates apply to steady-state DC condition, and they assume usage within all
other rated conditions.
Standard conditions, which produce a unity failure rate factor, are rated voltage, +85℃, and 0.1 ohm-
per-volt impedance.
While voltage and temperature are straight-forward, there is sometimes difficulty in determining
impedance. What is required is the circuit impedance seen by the capacitor. If several capacitors are
connected in parallel, the impedance seen by each is lowered by the source of energy stored in the
other capacitors. Energy is similarly stored in series inductors.
Voltage "de-rating" is a common and useful approach to improved reliability. It can be persued too far,
however , when it leads to installation of higher voltage capacitors of much larger size.
It is possible to lose more via higher
inherent failure rate than is gained by
voltage derating. SAMSUNG typically
recommends 50% derating, especially in
low impedance circuits.
2
10
120
110
100
90
Failure rate is conventionally expressed in
units of percent per thousand hours. As a
sample calculation, suppose a particular
batch of capacitors has a failure rate of 0.5%
/ Khr under standard conditions.
1
10
1.0
0.9
0
10
0.8
0.7
Connect the temperature
and applied voltage ratio
of interest with a straight
edge. The multiplier of
failure rate is given at the
inersection of this
80
-1
10
What would be the predicted failure rate at
0.7times rated voltage, 60℃ and 0.6Ω/V?
0.6
0.5
70
-2
10
line with the model scale.
0.4
0.3
0.2
The nomgraph gives a factor of 7 × 10-2 and
the table gives a factor of 0.4.
60
Given T1&v1 Read Failure
Rate Multiplier F1
Given T, & F2
Read Reguired Voltage V2
Given F3 & V3
Read Allowable Temp T3
-3
10
50
The failure rate estimate is then :
-4
10
40
0.5 × 7 × 10-2 × 0.4
= 1.4 × 10-2 or 0.014%/Khr
30
0.1
-5
10
20
T
F
V
Fig.8 Reliability Nomograph
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Table 4 Circuit Impedance Reliability Factors
Circuit Impedance
(ohms/volt)
Failure Rate Impedance
(multiplying factor)
0.1
1.0
0.8
0.6
0.4
0.3
0.2
0.1
0.07
0.2
0.4
0.6
0.8
1.0
2.0
3 or greater
● MOUNTING PRECAUTIONS
▶ Limit Pressure on Capacitor Installation with Mounter
A capacitor that has been damaged should be discarded to avoid later problems resulting from
mechanical stress.
Pressure must not exceed 4.9 N with a tool end diameter of 1.5mm when applied to the
capacitors using an absorber, centering tweezers, or the like. An excessively low absorber setting
position would result in not only the application of undue force to the capacitors but capacitor and
other component scattering,circuit board wiring breakage, and / or cracking as well, particularly
when the capacitors are mounted together with other chips having a height of 1 mm or less.
▶ Flux
▷ Select a flux that contains a minimum of chlorine and amine.
▷ After flux use, the chlorine and amine in the flux remain and must therefore be removed.
▶ Recommended Soldering Pattern Dimensions
L
Capacitor
Pattern
x
z
x
Fig. 9
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Table 4 Recommended soldering pattern dimensions(mm)
Dimensions
Capacitors size
Pattern dimensions
y
L
W
x
z
Case
J
1.6
2.0
3.2
3.5
5.8
7.3
0.85
1.25
1.6
0.9
1.2
1.6
1.6
2.3
2.3
1.0
1.1
1.2
2.2
2.4
2.6
0.7
0.8
1.2
1.4
2.4
3.8
P
S
T
U
V
2.8
3.2
4.3
▶ Chip Soldering Temperature and Time
Capacitors are capable of withstanding the following soldering temperatures and conditions;
▷ Waved soldering
Capacitor body temperature : 230℃∼ 260℃
Time : 5 seconds or less
▷ Reflow soldering see figures
Temp.℃
Heating
260
℃ Max
Cooling
200
100
Pre-heating
400
100
200
300
Time(sec)
Figure : Typical Temperature Profile of Reflow Soldering (pb-free)
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▷ Soldering with a soldering iron
The use of a soldering iron should be avoided wherever possible. If it is
unavoidable, follow the instructions set forth in Table 5. The time of soldering with an iron
should be one.
Table 5
℃
350
Soldering-iron tip temperature
Time
MAX
MAX
MAX
3 sec
30 W
Soldering-iron power
▶ Cleaning after Mounting
The following solvents are usable when cleaning the capacitors after mounting. Never use
a highly active solvent.
- Halogen organic solvent (HCFC225, etc.)
- Alcoholic solvent (IPA, ethanol, etc.)
- Petroleum solvent, alkali saponifying agent, water, etc.
Circuit board cleaning must be conducted at a temperature of not higher than 50°C and for
an immersion time of not longer than 30 minutes. When an ultrasonic cleaning method is
used, cleaning must be conducted at a frequency of 48 kHz or lower, at an vibrator output
of 0.02 W/cm3, at a temperature of not higher than 40°C, and for a time of 5 minutes or shorter.
NOTE 1: Care must be exercised in cleaning process so that the mounted capacitor will not come
into contact with any cleaned object or the like or will not get rubbed by a stiff brush or
the like. If such precautions are not taken particularly when the ultrasonic cleaning
method is employed, terminal breakage may occur.
NOTE 2: When performing ultrasonic cleaning under conditions other than stated above, conduct
adequate advance checkout.
● OTHER
▷ For further details, refer to EIAJ RCR-2368, Precautions and Guidelines for Using Electronic Device
Tantalum Capacitors.
▷ If you have any questions, feel free to contact your local SAMSUNG ELECTRO-MECHANICS agent.
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