Radial Solid Polymer Aluminum Capacitors
A755 105°C
Overview
Applications
KEMET’s Radial Solid Polymer Aluminum Capacitors
offer longer life and greater stability across a wide range
of temperatures. This highly conductive solid polymer
electrolyte eliminates the risk of drying out and, due to
its low ESR properties, is able to withstand higher ripple
currents during normal operation. This series is ideally
suited for industrial and commercial applications. For
AEC-Q200 qualified parts, please visit KEMET's
A768 Datasheet.
Typical applications include LED driver power supplies,
adapters (laptop power supplies), and medical equipment.
Benefits
• Through-hole form factor
• Low impedance
• High ripple current
• Long life
• 105°C/5,000 hours
• RoHS compliant
• Halogen-free
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Part Number System
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A
755
KS
687
M
0E
AA
E
014
Capacitor
Class
Series
Size Code
Capacitance
Code (pF)
Tolerance
Rated Voltage
(VDC)
Packaging
Electrical Parameters
ESR
Radial Solid
Polymer
Aluminum
Capacitors
105°C
5,000 hours
See
Dimension
Table
See Ordering
Options Table
E = Standard/ESR
Last 3 digits
represent
significant
figures for
ESR values.
(mΩ)
A = Aluminum
First two
digits
represent
significant
figures for
capacitance
values. Last
digit specifies
the number
of zeros to be
added.
M = ±20%
2.5 = 0E
4 = 0G
6.3 = 0J
10 = 1A
16 = 1C
20 = 1D
25 = 1E
Built Into Tomorrow
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
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A4068_A755 • 1/22/2021
1
Radial Solid Polymer Aluminum Capacitors
A755 105°C
Ordering Options Table
Diameter
Packaging Type
Lead Type
Lead Length (mm)
Lead and
Packaging Code
Standard Bulk Packaging Options
5 – 18
Bulk (bag)
5 – 18
Bulk (bag)
Bulk (bag)
5 – 18
Long Lead
(Loose Standard Leads)
Cut Leads
Formed Leads
15 Minimum
AA
5(1)
5(1)
BA
CA
H0 = 16±0.5
H0 = 16±0.5
H = 18.5±0.5
(for 8 x 12 H = 20±0.5)
FA
DA
H = 18.5±0.5
EA
Standard auto-insertion packaging options
5–8
Ammo Tape and Box
Ammo Tape and Box
Formed to 2.5 mm
Formed to 5 mm
6–8
Ammo Tape and Box
Straight
10 – 13
Ammo Tape and Box
Straight
5
(1)
EA
Contact KEMET for other Lead and Packaging options
Contact KEMET for custom Lead Length and options 3 to 10 mm
Size Code
Dimensions
DxL
BG
BK
BM
BQ
EA
EK
EM
EQ
KK
KR
KS
KV
KW
MS
MU
MV
MW
5x7
5x8
5x9
5x11
6.3x5
6.3x8
6.3x9
6.3x11
8x8
8x11.5
8x12
8x14
8x16
10x12
10x12.5
10x14
10x16
Lead and Packaging Code (SPQ)
AA
Bulk (Bag)
BA
Bulk (Bag)
CA
Bulk (Bag)
DA, EA, FA Ammo,
Tape and Box
1,000
1,000
1,000
1,000
1,000
1,000
1,000
1,000
500
500
500
500
500
250
250
250
250
1,000
1,000
1,000
1,000
1,000
1,000
1,000
1,000
500
500
500
500
500
250
250
250
250
1,000
1,000
1,000
1,000
1,000
1,000
1,000
1,000
500
500
500
500
500
250
250
250
250
2,000
2,000
2,000
2,000
1,500
1,500
1,500
1,500
1,000
1,000
1,000
1,000
1,000
600
600
600
600
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4068_A755 • 1/22/2021
2
Radial Solid Polymer Aluminum Capacitors
A755 105°C
Long Lead (Loose Standard Leads)
Diameter
d
F ±0.5
H
Minimum
d
F
H
5
6.3
8
10
13
18
0.5
2
15
0.5
2.5
15
0.6
3.5
15
0.6
5
15
0.6
5
15
0.8
7.5
15
4
Minimum
Cut Lead
Diameter
d
F ±0.5
d
F
5
6.3
8
10
13
18
0.5
2
0.5
2.5
0.6
3.5
0.6
5
0.6
5
0.8
7.5
H
According to customer requirement 3 – 10 mm
H ±0.5
Formed Lead
d
Diameter
F ±0.5
5
d
F
H
6.3
8
10
13
18
0.5
0.5
0.6
0.6
0.6
0.8
5
5
5
5
5
5
According to customer requirement 3 – 10 mm
2.5
H ±0.5
Maximum
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4068_A755 • 1/22/2021
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Radial Solid Polymer Aluminum Capacitors
A755 105°C
Dimensions – Millimeters
d
P
L
15
Minimum
D
4
Minimum
D
L
d
P
Size
Code
Nominal
Tolerance
Nominal
Tolerance
Nominal
Tolerance
Nominal
Tolerance
Safety
Vent
BQ
KS
MS
5
8
10
±0.5
±0.5
±0.5
11
12
12
±1.0
±1.0
±1.0
0.5
0.6
0.6
±0.05
±0.05
±0.05
2
3.5
5.0
±0.5
±0.5
±0.5
Yes
Performance Characteristics
Item
Performance Characteristics
Capacitance Range
47 – 1,500 µF
Rated Voltage
2.5 – 25 VDC
Operating Temperature
−55°C to +105°C
Capacitance Tolerance
±20% at 120 Hz/20°C
5,000 hours (see conditions in Test Method & Performance)
Life Test
Leakage Current
I ≤ 0.15 CV
C = Rated capacitance (µF), V = Rated voltage (VDC), Voltage applied for 2 minutes at 20°C.
Dissipation Factor (tan δ)
Rated Voltage (V)
tan δ (Maximum) at 120 Hz/20°C
2.5 – 25
0.10
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A4068_A755 • 1/22/2021
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Radial Solid Polymer Aluminum Capacitors
A755 105°C
Compensation Factor of Ripple Current (RC) vs. Frequency
Frequency
120 Hz ≤ f < 1 kHz
1 kHz ≤ f < 10 kHz
0.05
0.30
Coefficient
10 kHz ≤ f < 100 kHz 100 kHz ≤ f < 500 kHz
0.70
1.00
Test Method & Performance
Conditions
Load Life Test
Shelf Life Test
Temperature
105°C
105°C
Test Duration
5,000 hours
96 hours
Ripple Current
No ripple current applied
No ripple current applied
The sum of DC voltage and the peak AC voltage
must not exceed the rated voltage of the capacitor
No voltage applied
Voltage
Performance
The following specifications will be satisfied when the capacitor is restored to 20°C.
Capacitance Change
Within ±20% of the initial value
Dissipation Factor
Does not exceed 150% of the specified value
ESR
Does not exceed 150% of the specified value
Leakage Current
Does not exceed specified value
The following specifications will be satisfied when the capacitor is restored to 20°C
after application of rated voltage for 1,000 hours at 60°C, 90%~95% RH.
Damp Heat
Capacitance Change
Within ±20% of the initial value
Dissipation Factor
Does not exceed 150% of the specified value
ESR
Does not exceed 150% of the specified value
Leakage Current
Surge Voltage
(Rated Voltage x 1.15 (V))
Capacitance Change
Does not exceed specified value
The following specifications will be satisfied when the capacitor is subjected to 1,000
cycles each consisting of charge with the surge voltages specified at 105°C for 30
seconds through a protective resistor (Rc = 1 kΩ) and discharge for
5 minutes 30 seconds.
Within ±20% of the initial value
Dissipation Factor
Does not exceed 150% of the specified value
ESR
Does not exceed 150% of the specified value
Leakage Current
Does not exceed specified value
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
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A4068_A755 • 1/22/2021
5
Radial Solid Polymer Aluminum Capacitors
A755 105°C
Shelf Life and Re-Ageing
Shelf Life
Solderability is 12 months
The capacitance, ESR and impedance of a capacitor will not change significantly after extended storage periods, however the
leakage current will slowly increase.
• This series should not be stored in high temperatures or where there is a high level of humidity.
• The suitable storage condition is +5 to +35°C and less than 75% in relative humidity.
• Do not store in damp conditions such as water, saltwater spray or oil spray.
• Do not store in an environment full of hazardous gas (hydrogen sulphide, sulphurous acid gas, nitrous acid, chlorine gas,
ammonium, etc.)
• Do not store under exposure to ozone, ultraviolet rays or radiation.
If a capacitor has been stored for more than 24 months under these conditions and it shows increased leakage current,
then a treatment by voltage application is recommended.
Re-age Procedure
Apply the rated DC voltage to the capacitor at 105°C for a period of 120 minutes through a 1 kΩ series resistor.
Environmental Compliance
All Part Numbers in this datasheet are Reach and RoHS compliant, and Halogen-Free.
As an environmentally conscious company, KEMET is working continuously with improvements concerning the environmental
effects of both our capacitors and their production. In Europe (RoHS Directive) and in some other geographical areas like
China, legislation has been put in place to prevent the use of some hazardous materials, such as lead (Pb), in electronic
equipment. All products in this catalog are produced to help our customers' obligations to guarantee their products and fulfill
these legislative requirements. The only material of concern in our products has been lead (Pb), which has been removed
from all designs to fulfill the requirement of containing less than 0.1% of lead in any homogeneous material. KEMET will
closely follow any changes in legislation worldwide and makes any necessary changes in its products, whenever needed.
Some customer segments such as medical, military and automotive electronics may still require the use of Lead in electrode
coatings. To clarify the situation and distinguish products from each other, a special symbol is used on the packaging labels
for RoHS compatible capacitors.
Due to customer requirements, there may appear additional markings such as LF = Lead-free, or LFW = Lead-free wires on
the label.
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4068_A755 • 1/22/2021
6
Radial Solid Polymer Aluminum Capacitors
A755 105°C
Table 1 – Ratings & Part Number Reference
Rated
Voltage
Surge
Voltage
Rated
Capacitance
Case Size
ESR
RC
LC
KEMET Part Number
(VDC)
(VDC)
120 Hz 20°C
(µF)
DxL
(mm)
100 kHz 20°C
(mΩ)
100 kHz 105°C
(mA)
20°C 2 min
(µA)
() Represents Part
Number Options
2.5
2.5
2.5
4
4
6.3
6.3
6.3
6.3
10
10
10
10
10
16
16
16
16
20
20
25
25
25
25
25
2.9
2.9
2.9
4.6
4.6
7.2
7.2
7.2
7.2
11.5
11.5
11.5
11.5
11.5
18.4
18.4
18.4
18.4
23
23
28.8
28.8
28.8
28.8
28.8
680
820
1,500
560
1,200
220
680
1,000
1,500
270
560
820
1,000
1,500
270
470
560
1,000
100
150
47
100
220
270
330
8 x 12
8 x 12
10 x 12
8 x 12
8 x 12
5 x 11
8 x 12
8 x 12
10 x 12
8 x 12
8 x 12
8 x 12
10 x 12
10 x 12
8 x 12
10 x 12
10 x 12
10 x 12
8 x 12
8 x 12
8 x 12
8 x 12
8 x 12
10 x 12
10 x 12
14
14
13
14
14
18
14
13
13
15
15
14
13
13
15
13
13
12
20
20
25
25
25
15
15
4,800
4,800
5,250
4,800
4,900
2,000
4,500
4,500
5,250
4,820
4,820
4,820
5,100
5,100
4,100
5,250
5,250
5,250
4,420
4,420
2,320
2,500
3,000
4,850
4,850
255
308
563
336
720
208
643
945
1,418
405
840
1,230
1,500
2,250
648
1,128
1,344
2,400
300
450
176
375
825
1,013
1,238
A755KS687M0E(1)E014
A755KS827M0E(1)E014
A755MS158M0E(1)E013
A755KS567M0G(1)E014
A755KS128M0G(1)E014
A755BQ227M0J(1)E018
A755KS687M0J(1)E014
A755KS108M0J(1)E013
A755MS158M0J(1)E013
A755KS277M1A(1)E015
A755KS567M1A(1)E015
A755KS827M1A(1)E014
A755MS108M1A(1)E013
A755MS158M1A(1)E013
A755KS277M1C(1)E015
A755MS477M1C(1)E013
A755MS567M1C(1)E013
A755MS108M1C(1)E012
A755KS107M1D(1)E020
A755KS157M1D(1)E020
A755KS476M1E(1)E025
A755KS107M1E(1)E025
A755KS227M1E(1)E025
A755MS277M1E(1)E015
A755MS337M1E(1)E015
(VDC)
(VDC)
120 Hz 20°C
(µF)
D x L (mm)
100 kHz 20°C
(mΩ)
100 kHz 105°C
(mA)
20°C 2 min
(µA)
() Represents Part
Number Options
Rated Voltage
Surge Voltage
Rated Capacitance
Case Size
ESR
RC
LC
KEMET Part Number
(1) Please see packaging codes for options.
(2) Electrical Parameters code. See Part Number System for available options.
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
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A4068_A755 • 1/22/2021
7
Radial Solid Polymer Aluminum Capacitors
A755 105°C
Installing
Solid Polymer Aluminum Capacitors are prone to a change in leakage current due to thermal stress during soldering. The
leakage current may increase after soldering or reflow soldering. Therefore, verify the suitability for use in circuits sensitive
to leakage current.
A general principle is that lower temperature operation results in a longer, useful life of the capacitor. For this reason, it
should be ensured that electrolytic capacitors are placed away from heat-emitting components. Adequate space should be
allowed between components for cooling air to circulate, especially when high ripple current loads are applied. In any case,
the maximum rated temperature must not be exceeded.
• Do not deform the case of capacitors or use capacitors with a deformed case.
• Verify that the connections of the capacitors are able to insert on the board without excessive mechanical force.
Excessive force during insertion, as well as after soldering may cause terminal damage and affect the electrical
performance.
• Ensure electrical insulation between the capacitor case, negative terminal, positive terminal and PCB.
• If the capacitors require mounting through additional means, the recommended mounting accessories shall be used.
• Verify the correct polarization of the capacitor on the board.
KEMET recommends, to ensure that the voltage across each capacitor does not exceed its rated voltage.
Temperature Stability Characteristics
Stable characteristics in a very low temperature range allows for less circuits in the design.
Due to a solid polymer electrolyte, Solid Polymer Aluminum Capacitors feature higher conductivity. This results in a lower
ESR which, coupled with high capacitance allows an aluminum polymer capacitor to replace several standard electrolytic
capacitors, reducing the number of components and maximizing board space.
The ESR of polymer capacitors is nearly constant within its operating temperature range, while the ESR of a standard
electrolytic capacitor noticeably changes with temperature.
Temperature Stability Characteristics
1,000
Aluminum Electrolytic
Conductive Polymer Electrolytic
ESR (Ω)
100
10
1
0.1
0.01
−55
−20
0
20
Temperature (°C)
70
105
125
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A4068_A755 • 1/22/2021
8
Radial Solid Polymer Aluminum Capacitors
A755 105°C
Expected Life Calculation Chart
Expected life depends on operating temperature according to the following formula:
L = Lo x 10(To-T)/20
Where:
L: Expected life
Lo: Life at maximum permissible operating temperature with rated operating voltage applied (hours)
T: Actual operating temperature
To: Maximum permissible operating temperature
Actual Operating Temperature (ºC)
Expected Life Calculation Chart
105ºC
85ºC
65ºC
2,000
20,000
200,000
Expected Life (hours)
The effect of derating temperature can be seen in this graph.
In this example, the life expectancy of a 2,000 hour Polymer capacitor is significantly greater than that of a 2,000 hour
standard electrolytic capacitor.
Capacitor Life (H)
50,000
100,000
150,000
200,000
Temperature (ºC)
105
100
95
90
Aluminum Electrolytic
Conductive Polymer Electrolytic
85
80
75
70
65
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A4068_A755 • 1/22/2021
9
Radial Solid Polymer Aluminum Capacitors
A755 105°C
Stability of ESR across Frequency Range
Due to a solid polymer electrolyte, the ESR curve of a solid polymer aluminum capacitor, is lower and more stable than that
of a standard electrolytic capacitor.
Stable ESR Values across Frequency
100
Aluminum Electrolytic
Conductive Polymer Electrolytic
ESR
10
1
0.1
0.01
0
10K
100K
Frequency (Hz)
1M
10M
High Resistance to Ripple Current
As a result of a lower ESR, solid polymer aluminum capacitors are able to withstand higher ripple currents during
normal operation.
Allowable Ripple Current (100 kHz 105°C)
Ripple Current (Arms)
4
3.5
3
Aluminum Electrolytic
Conductive Polymer Electrolytic
2.5
2
1.5
1
0.5
0
33 µF/16 V
47 µF/16 V
100 µF/16 V
220 µF/16 V
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A4068_A755 • 1/22/2021
10
Radial Solid Polymer Aluminum Capacitors
A755 105°C
Marking
Negative
Polarity
Blue Line
Date Code*
Trademark
1 Digits = Rated Voltage
st
Letter = Year Code
Series
Final Digits = Week of the Year
Date Code*
(Last 3 Digits)
S = 2019
01 = 1 week of the Year to
52 = 52nd week of the Year
st
Year Code
S
2019
T
2020
U
2021
V
2022
W
2023
X
2024
Y
2025
Z
2026
Capacitance
Rated
Voltage
Construction
Aluminum Can
Lead
Terminal Tabs
Detailed Cross Section
Rubber Seal
Terminal Tab
Rubber Seal
Margin
Aluminum Can
Paper Spacer with Solid
Polymer Electrolyte
(First Layer)
Paper Spacer with Solid
Polymer Electrolyte
(Third Layer)
Anode Aluminum Foil,
Cathode Aluminum
Etched, Covered with
Foil, Etched
Aluminum Oxide
(Fourth Layer)
(Second Layer)
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Lead (+)
Lead (−)
A4068_A755 • 1/22/2021
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Radial Solid Polymer Aluminum Capacitors
A755 105°C
Flow Soldering (not suitable for SMD parts)
The soldering conditions should be within the specified conditions below:
• Do not dip the capacitors body into the melted solder.
• Flux should only be applied to the capacitors terminals.
• Vapour heat transfer systems are not recommended. The system should be thermal, such as infra-red radiation or hot
blast.
• Observe the soldering conditions as shown below.
• Do not exceed these limits and avoid repeated reflowing.
Flow Soldering
Pre-heat
Solder
Temperature
(°C)
Maximum Time
(Seconds)
Maximum
Repetitions
< 120
260±5°C
< 120
< 10
1
2
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A4068_A755 • 1/22/2021
12
Radial Solid Polymer Aluminum Capacitors
A755 105°C
Taping for Automatic Insertion Machines
Fig. 1 (Diameter Φ5) 5 mm formed to 2.5 mm FA
P2
P
∆h1
D
F
P1
H
P2
∆h
L
H1
Fig. 2 (Diameter for Φ5 to Φ8) 5 – 8 mm formed to 5 mm DA
F1
Ho
A
W2
P1
H1
d
W1
F
W2
F1
A
Dimensions
(mm)
D
Tolerance
±0.5
Formed to 2.5 mm
5
5
Formed to 5 mm
Straight leads
6 – 8 mm
Straight leads
10 – 13 mm
7.0
0.5
9–11
7–11
8.0
12.0
6.3 8–11
8
10
13
P
H
H1
d
F
P1
W2
A
P1
P2
F
W
8.0
12.0
12
16.0
18.0
20.0
20.0
0.5
12.7 12.7
5.1
6.35 2.5
12.7 12.7 3.85 6.35
5
d
W1
W0
W
t
W0 W1 W2
H
t
D0
P0
P0
∆h
D
Ho
D0
A
H1 ∆h ∆h1
±0.02 ±1.0 ±0.2 ±0.7 ±1.0 ±0.5 ±0.5 min ±0.5 max ±0.75 ±0.5 ±0.2 Max. Max.
6.3 8–11
8
d
∆h1
L
D0
L
P
∆h
W1
W0
W
P0
D0
Fig. 4 (Diameter for Φ10) 10 mm EA
D
P1
t
W0 W
P2
∆h1
d
Ho
t
L
H
W2
A
Fig. 3 (Diameter for Φ6 to Φ8) 6 – 8 mm EA
H1
F
H
P0
P
∆h
D
D0
P2
∆h1
L
W1
W0
W
P0
P
18
12.5
9
1.5
17.5
16
18
12.5
9
1.5 18.5
16
t
±2
±1
±0.3
0
0
0.7
32.5
0.6
0.5
2.5
12.7 12.7
5.4
6.35
18
12.5
9
3.5
0.6
1.5
4
18.5
20
--
0.6
12.7 12.7 3.85 6.35
15
15
5
5
11
18
12.5
7.5
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9
1.5 18.5
33
36
41
40.5
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Radial Solid Polymer Aluminum Capacitors
A755 105°C
Construction Data
Foil tabs
Anode foil
The manufacturing process begins with the anode foil being
electrochemically etched to increase the surface area and
then ‘formed’ to produce the aluminum oxide layer. Both the
anode and cathode foils are then interleaved with absorbent
paper and wound into a cylinder. During the winding process,
aluminum tabs are attached to each foil to provide the
electrical contact.
The deck, complete with terminals, is attached to the tabs
and then folded down to rest on top of the winding. The
complete winding is impregnated with a conductive polymer
electrolyte before being housed in a suitable container, usually
an aluminum can, and sealed. Throughout the process, all
materials inside the housing must be maintained at the
highest purity and be compatible with the electrolyte.
Each capacitor is aged and tested before being packed.
The purpose of aging is to repair any damage in the oxide
layer and thus reduce the leakage current to a very low level.
Aging is normally carried out at the rated temperature of the
capacitor and is accomplished by applying voltage to the
device while carefully controlling the supply current. The
process may take several hours to complete. Damage to the
oxide layer can occur due to variety of reasons:
• Slitting of the anode foil after forming
• Attaching the tabs to the anode foil
• Minor mechanical damage caused during winding
Cathode foil
Tissues
Slitting
Winding
Welding
Forming
Assembling
Marking
Aging
Inspection
Packing
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
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Radial Solid Polymer Aluminum Capacitors
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Product Safety
THESE NOTES SHOULD BE READ IN CONJUNCTION WITH THE PRODUCT DATA SHEET. FAILURE TO OBSERVE THE RATINGS
AND THE INFORMATION ON THIS SHEET MAY RESULT IN A SAFETY HAZARD.
Warning
When potential lethal voltages e.g. 30 VAC (RMS) or 60 VDC are applied to the terminals of this product, the use of a
hazard warning label is recommended.
1. Electrolyte
Conductive polymer aluminum solid electrolytic capacitors contain polymers (electrolytes) which can be hazardous.
1.1 Safety Precautions
In the event of gas venting, avoid contact and inhalation. Wash the affected area with hot water. Use rubber gloves to avoid
skin contact. Any contact with the eyes should be liberally irrigated with water and medical advice sought.
2. Intrinsic Properties
2.1 Operating
DC capacitors are polar devices and will operate safely only if correctly connected. Reversing the connections will result
in high leakage currents which could subsequently cause short circuit failure and possibly explosion and fire. Correctly
polarized operation may result in the above failure modes if:
• The surge voltage is exceeded
• The ambient temperature is too high
• Excessive ripple currents are applied
2.2 Non-Operating
Excessive torque or soldering heat may affect the performance of the capacitor or damage the sealing. Electric shock may
result if capacitors are not discharged.
3. Disposal
Aluminum electrolytic capacitors are consignable waste under the Special Waste Regulations 1996 (Statutory Instrument
1996 No 972), which complies with the EC Hazardous Waste Directive – Directive 91/689/EEC. The electrolyte should
therefore be treated as a hazardous waste and advice should be sought from the local office of the Environmental Agency
regarding its disposal.
Due to the construction of an aluminum electrolytic capacitors, high temperature incineration may cause the component to
explode due to build-up of internal pressure. In addition, incineration may also cause the emission of noxious fumes.
KEMET strongly recommends that if there are any doubts regarding the disposal of conductive polymer aluminum solid
electrolytic capacitors, that advice be sought from the local regulating authority.
In addition, KEMET would like to request that users of aluminum electrolytic capacitors respect the needs of the environment
and, wherever possible, recover as much of the materials as possible, i.e. aluminum.
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
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Product Safety cont.
4. Unsafe Use
Most failures are of a passive nature and do not represent a safety hazard. A hazard may, however, arise if this failure causes
a dangerous malfunction of the equipment in which the capacitor is employed. Circuits should be designed to fail safe under
the normal modes of failure.
The usual failure mode is an increase in leakage current or short circuit. Other possible modes are decrease of capacitance,
increase in dissipation factor (and impedance) or an open circuit. Capacitors should be used in a well-ventilated enclosure or
cabinet.
5. Mounting
Care should be taken when mounting by clamp, that any safety vent in the can is not covered.
6. Fumigation
In many countries throughout the world it is now common practice to fumigate shipments of products in order to control
insect infestation, particularly when wooden packaging is used. Currently, methyl bromide is widely used as a fumigant,
which can penetrate cardboard packing and polymer bags and, therefore, come into direct contact with equipment or
components contained within.
If aluminum electrolytic capacitors become exposed to methyl bromide then corrosion may occur, depending upon the
concentration and exposure time to the chemical.
This failure mode can affect all types of KEMET aluminum electrolytic capacitors. Methyl bromide can penetrate the seals of
aluminum electrolytic capacitors and cause internal corrosion of the anode connection, resulting in the component becoming
open circuit. The rate of corrosion will depend upon the level of exposure to methyl bromide as well as the subsequent
operating conditions, such as voltage and temperature. It may take months or, in some cases, several years before the
component becomes open circuit.
7. Dielectric Absorption
A phenomenon known as dielectric absorption can cause aluminum electrolytic capacitors to recharge themselves. The
phenomenon is well known but impossible to predict with any great accuracy, so potentially any electrolytic product could be
affected. Thus, a capacitor that has been charged and then completely discharged will appear to recharge itself if left open
circuit; this will manifest itself as a small voltage across the terminals of the capacitor. Generally, the voltages seen are less
than 20 VDC. However, higher voltages have on occasion been reported.
In order to avoid any problems caused by this voltage, KEMET recommends that capacitors be discharged before connecting
to the terminals.
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4068_A755 • 1/22/2021
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Radial Solid Polymer Aluminum Capacitors
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KEMET Electronics Corporation Sales Offices
For a complete list of our global sales offices, please visit www.kemet.com/sales.
Disclaimer
All product specifications, statements, information and data (collectively, the “Information”) in this datasheet are subject to change. The customer is responsible for
checking and verifying the extent to which the Information contained in this publication is applicable to an order at the time the order is placed. All Information given
herein is believed to be accurate and reliable, but it is presented without guarantee, warranty, or responsibility of any kind, expressed or implied.
Statements of suitability for certain applications are based on KEMET Electronics Corporation’s (“KEMET”) knowledge of typical operating conditions for such
applications, but are not intended to constitute – and KEMET specifically disclaims – any warranty concerning suitability for a specific customer application or use.
The Information is intended for use only by customers who have the requisite experience and capability to determine the correct products for their application. Any
technical advice inferred from this Information or otherwise provided by KEMET with reference to the use of KEMET’s products is given gratis, and KEMET assumes
no obligation or liability for the advice given or results obtained.
Although KEMET designs and manufactures its products to the most stringent quality and safety standards, given the current state of the art, isolated component
failures may still occur. Accordingly, customer applications which require a high degree of reliability or safety should employ suitable designs or other safeguards
(such as installation of protective circuitry or redundancies) in order to ensure that the failure of an electrical component does not result in a risk of personal injury
or property damage.
Although all product–related warnings, cautions and notes must be observed, the customer should not assume that all safety measures are indicted or that other
measures may not be required.
KEMET is a registered trademark of KEMET Electronics Corporation.
© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4068_A755 • 1/22/2021
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