Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Overview
Applications
KEMET’s A781 is a surface mount conductive
polymer hybrid capacitor with outstanding electrical
performance. The A781 winding is housed in a
cylindrical aluminum can with a high/quality rubber
deck. Low ESR is conditioned by a highly conductive
polymer (PEDOT/PSS). The polymer system creates
an electrical pathway between the anodic oxide layer
and the cathode through a mechanical separator
- paper. The A781 winding is impregnated with
liquid electrolyte that translates to the self-healing
features of the capacitor. Thanks to its mechanical
robustness, the A781 is suitable for use in mobile and
automotive installations with operation up to +135°C.
KEMET’s A781 is a series of high-performance surface
mount hybrid capacitors. Due to its mechanical
robustness, the A781 is suitable for use in mobile and
automotive installations with extremely high demands and
operation up to +135°C.
Benefits
• Surface mount form factor
• High ripple current up to 2.9Arms
• High temperature; 135°C up to 2,000 hours
• Low leakage current (Typically no re-ageing required)
• High vibration resistance up to 30g
Standard
• Self-healing behaviors
• Outstanding electrical performance
• AEC-Q200 compliance
• RoHS compliant
• Halogen-Free
Anti-Vibration
Built Into Tomorrow
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
1
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Part Number System
A
781
MS
107
M
1J
LA
S
030
Capacitor
Class
Series
Size Code
Capacitance
Code (pF)
Tolerance
Rated Voltage
(VDC)
Packaging
Electrical
Parameters
ESR
Surface
Mount Hybrid
Polymer
Aluminum
Capacitors
135°C
2,000 hours
See
Dimension
Table
A = Aluminum
First two
digits
represent
significant
figures for
capacitance
values. Last
digit specifies
the number
of zeros to be
added.
M = ±20%
25 = 1E
35 = 1V
50 = 1H
63 = 1J
LA =
Tape & Reel
S = Automotive
V = Automotive
+Anti-Vibration
Last 3 digits
represent
significant
figures for
ESR values.
(mΩ)
Ordering Options Table
Packaging Type
Packaging Code
Standard Packaging Options
Tape & Reel
LA
Contact KEMET for other Lead and Packaging options
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
2
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Dimensions – Millimeters
Standard
D
H
W
P
R
L
C
0.2 Maximum
Anti-Vibration
K
J
D
L
W
H
C
R
P
J
K
Tolerance
Range
Nominal
Nominal
Nominal
9.0
11.0
±0.2
±0.2
0.8 – 1.1
0.8 – 1.1
3.1
4.6
-
-
±0.2
11.2
±0.2
0.7 – 1.1
4.6
4.4
3.2
10.3
±0.2
11.0
±0.2
0.8 – 1.1
4.6
-
-
10.8
±0.2
11.2
±0.2
0.7 – 1.1
4.6
4.4
3.2
Size
Code
Nominal
Tolerance
Nominal
Tolerance
Nominal
Tolerance
Nominal
Tolerance
Nominal
KS
MN
8.0
10.0
±0.5
±0.5
12.2
10.2
±0.3
±0.3
8.3
10.3
±0.2
±0.2
8.3
10.3
±0.2
±0.2
MN
(AntiVibration)
10.0
±0.5
10.4
±0.3
10.3
±0.2
10.8
MS
10.0
±0.5
12.2
±0.5
10.3
±0.2
MS
(AntiVibration)
10.0
±0.5
12.4
±0.5
10.3
±0.2
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
3
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Environmental Compliance
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 catalogue are produced to help our customers’ obligations to guarantee their products and fulfil these
legislative requirements. The only material of concern in our products has been lead (Pb), which has been removed from all
designs to fulfil 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.
Performance Characteristics
Item
Performance Characteristics
Capacitance Range
68 – 560 µF
Rated Voltage
25 – 63 VDC
Operating Temperature
−55°C to +135°C
Capacitance Tolerance
±20% at 120 Hz/20°C
Life Test
2,000 hours at rated temperature (See conditions in Test Method and Performance)
I = 0.01 CV
Leakage Current
C = Rated capacitance (µF), V = Rated voltage (VDC), Voltage applied for 2 minutes at 20°C.
Compensation Factor of Ripple Current (RC) vs. Frequency
Frequecy correction factor for permissible ripple current should be calculated following IAC, f / IAC, 100 kHz :
Rated Voltage (V) Frequency
25 and 35
50 and 63
Coefficient
100 Hz
200 Hz
500 Hz
1 kHz
5 kHz
10 kHZ
50 kHz
100 kHz
0.40
0.50
0.60
0.67
0.79
0.84
0.97
1.00
0.22
0.31
0.42
0.55
0.75
0.82
0.94
1.00
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
4
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Test Method & Performance
Conditions
Endurance Life Test
High Temperature Storage Test
Temperature
+125°C
+135°C
+135°C
Test Duration
4,000 hours
2,000 hours
1,000 hours
Ripple Current
Voltage
Performance
Rated ripple applied
No ripple current applied
Rated voltage
No voltage applied
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 200% of the specified value
ESR
Does not exceed 200% of the specified value
Leakage Current
Does not exceed the specified value
Does not exceed the specified value after
Voltage treatment (Re-age procedure)
The following specifications will be satisfied when the capacitor is restored to 20°C
after application of rated voltage for 2,500 hours at 85°C, 85% RH.
Damp Heat
Capacitance Change
Within ±20% of the initial value
Dissipation Factor
Does not exceed 200% of the specified value
ESR
Does not exceed 200% of the specified value
Leakage Current
Surge Voltage
(Rated Voltage x
1.15(V))
Does not exceed the 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 135°C for 30 seconds through a
protective resistor (Rc = 1 kΩ) and discharge for 5 minutes, 30 seconds.
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
Resistance to
Soldering Heat
Does not exceed the specified value
Measurement for solder temperature profile at capacitor top and terminal.
Capacitance Change
Within ±10% 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 the specified value
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
5
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Test Method & Performance – Anti-Vibration Version
Anti-Vibration Version
Vibration Test Specifications
Capacitance Change
1.5 mm displacement amplitude or 30 g maximum acceleration. Vibration applied
for three 4-hour sessions at 10 – 2,000 Hz (capacitor on PCB).
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 the specified value
Shelf Life & Re-Ageing
Shelf Life
Solderability is 12 months after manufacturing date.
The capacitance, ESR and impedance of a capacitor will not change significantly after extended storage periods, however the
leakage current will slowly increase.
• 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 containing gases such as 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 12 months under these conditions and it shows increased leakage current, then
a treatment by voltage application is recommended.
MSL 1 rating according to IPC/JEDEC-J-STD-020.
Re-age Procedure
Apply the rated DC voltage to the capacitor at 125°C for a period of 120 minutes through a 1 kΩ series resistor.
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
6
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Table 1 – Ratings & Part Number Reference
Rated
Voltage
Surge
Voltage
Rated
Capacitance
ESR
Dissipation
Factor
Ripple
Current1
Ripple
Current 2
Ripple
Current
max 3
Ripple
Current
max 3
Leakage
Current
Case
Size
(VDC)
(VDC)
120 Hz 20°C
(µF)
100 kHz
20°C
(mΩ)
120 Hz 20°C
100 kHz
125°C
(mA)
100 kHz
135°C
(mA)
100 kHz
105°C
(mA)
100 kHz
125°C
(mA)
20°C
2 min
(µA)
DxL
(mm)
Standard Version
Anti-Vibration
Version
D x L (mm)
AntiVibration
25
25
25
35
35
50
50
63
63
28.75
28.75
28.75
40.25
40.25
57.50
57.50
72.45
72.45
330
470
560
180
270
100
150
68
100
25
25
22
25
22
30
28
35
30
0.14
0.14
0.14
0.12
0.12
0.10
0.10
0.08
0.08
2,200
2,200
2,600
2,200
2,600
2,000
2,300
1,850
2,200
2,500
2,500
2,900
2,500
2,900
2,300
2,600
2,100
2,500
7,000
7,000
7,450
7,000
7,450
6,400
6,600
5,900
6,400
4,500
4,500
4,800
4,500
4,800
4,100
4,250
3,800
4,100
82.5
117.5
140.0
63.0
94.5
50.0
75.0
42.8
63.0
10 × 10.2
10 × 10.2
10 × 12.2
10 × 10.2
10 × 12.2
10 × 10.2
10 × 12.2
10 × 10.2
10 × 12.2
A781MN337M1ELAS025
A781MN477M1ELAS025
A781MS567M1ELAS022
A781MN187M1VLAS025
A781MS277M1VLAS022
A781MN107M1HLAS030
A781MS157M1HLAS028
A781MN686M1JLAS035
A781MS107M1JLAS030
A781MN337M1ELAV025
A781MN477M1ELAV025
A781MS567M1ELAV022
A781MN187M1VLAV025
A781MS277M1VLAV022
A781MN107M1HLAV030
A781MS157M1HLAV028
A781MN686M1JLAV035
A781MS107M1JLAV030
10 x 10.4
10 x 10.4
10 × 12.4
10 x 10.4
10 × 12.4
10 x 10.4
10 × 12.4
10 x 10.4
10 × 12.4
KEMET Part Number
Case Size
1 Capacitor mounted on PCB, Lop: 4,000 hours
2 Capacitor mounted on PCB, Lop: 2,000 hours
3 Capacitor mounted with low thermal resistance path (heat-sink), Lop: 3,000 hours
KEMET technology allows to achieve enhanced ripple performance by adding a heat sink solution. This component acts as a dissipator of generated
heat, granting effective cooling of the capacitor system.
Installing
Hybrid 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. Depending on the nature of the circuit, it may be recommended to follow the re-aging procedure before
application.
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 Hybrid Polymer Aluminum 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.
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
7
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Temperature Stability Characteristics
Hybrid Polymer Aluminum Capacitors allow high ripple currents for smaller case sizes and higher voltage comparing with
standard electrolytics. The presence of conductive polymer and electrolyte allows for higher temperature robustness and a
more stable product performance.
Temperature Stability Characteristics
Temperature/ oC
Hybrid versus Electrolytic Ripple Test
45
40
35
30
25
20
15
10
5
0
Hybrid
Electrolytic
0
500
1,000
1,500
Time/s
2,000
2,500
Electrical Parameters across Frequency Range
Due to the conductive polymer and electrolyte, Hybrid Aluminum Polymer Capacitors feature higher conductivity. Therefore,
ESR and Impedance of these capacitors are significantly lower than that of a standard electrolytic capacitor at higher
frequencies. This allows an Hybrid Aluminum Polymer capacitor to replace several standard electrolytic capacitors, reducing
the number of components and maximizing board space.
Impedance Versus Frequency
ESR Versus Frequency
10,000
100,000
Hybrid
Impedance (mΩ)
ESR (mΩ)
1,000
100
Hybrid
10
Electrolytic
1
10
100
1,000
10,000
100,000 1,000,000
Frequency (Hz)
10,000
Electrolytic
1,000
100
10
1
10
100
1,000
10,000
100,000
1,000,000
Frequency (Hz)
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
8
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Operational Life
Typical capacitance and ESR curves of Polymer Hybrid V-Chip mounted on a standard Printed Circuit Board (PCB) at rated
temperature TR and with rated ripple current IRAC applied:
Cap (20oC, 120 Hz), µF
IAC=IRAC, TA=TR
1.2xCR
0.8xCR
0
500
1,000
1,500
2,000
time, hrs.
IAC=IRAC, TA=TR
ESR (20oC, 100kHz), mΩ
2xESR
specified
value
ESR
specified
value
0
500
1,000
time, hrs.
1,500
2,000
DC Life Formula
Expected DC operational life (LOp, in k hour) can be calculated in accordance to the following equation:
LOp = 6.5 × 10((125-T)/42)
Where:
LOp: Life at maximum permissible operating temperature with rated operating voltage applied (k hour). Maximum LOp = 131 kh.
T: Ambient operating temperature (°C).
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
9
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Operational Life
Operational Life (LOp1) of a Polymer Hybrid V-Chip mounted on a Printed Circuit Board (PCB) at ambient temperature TA and
ripple current IAC applied can be converted from the diagram:
PCB (IRAC MAX(1))
1.4
IAC/IRAC(1)(135ºC)
1.2
1
0.8
0.6
0.4
0.2
0
85
95
105
115
125
135
145
TA , ºC
Operational Life (LOp2), when using a low thermal resistance path, at capacitor terminal temperature TT and ripple current IAC
applied, can be converted from the diagram:
Heat Sink (IRAC MAX(2))
1.4
IAC/IRAC(2)(125ºC)
1.2
1
0.8
0.6
0.4
0.2
0
85
95
105
115
TT , ºC
125
135
145
IRAC(1) and IRAC(2) correspond to maximum ripple current specified for each case and should be consulted in Table 1 of this
datasheet. The dashed lines correspond to the maximum ripple current allowed. As an example, when using a low thermal
resistance path, at a terminal temperature of 135°C, the applied ripple current is limited to IAC/IRAC(2) = 0.88.
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
10
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Landing Pad – Millimeters
Diameter
A
B
C
8
3.1
4.2
2.2
10
4.5
4.4
2.2
10
(Anti-Vibration)
4.5
4.4
4.6
C
Units in mm
B
A
B
Marking
Date Code*
1 Digits = Rated Voltage
st
Letter = Year Code
Trademark
Negative
Polarity
Marking
Rated
Voltage
(VDC)
Series
Date Code*
(Last 3 Digits)
Capacitance (µF)
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Final Digits = Week of the Year
T = 2020
01 = 1 week of the Year to
52 = 52nd week of the Year
st
Year Code
T
2020
U
2021
V
2022
W
2023
X
2024
Y
2025
Z
2026
A4112_A781 • 8/8/2023
11
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Construction
Aluminum Can
Liquid Electrolyte
Lead
Detailed Cross Section
Rubber Seal
Terminal Tab
Terminal Tabs
Rubber Seal
Margin
Aluminum Can
Paper Spacer with
Conductive Polymer
(First Layer)
Anode Aluminum Foil,
Etched, Covered with
Aluminum Oxide
(Second Layer)
Paper Spacer with
Conductive Polymer
(Third Layer)
Cathode Aluminum
Foil, Etched
(Fourth Layer)
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Lead (+)
Lead (−)
A4112_A781 • 8/8/2023
12
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Re-Flow Soldering
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.
Time
Period
Preheating
ts
tL
td
Temperature (°C)
150 – 180
≥ 217
≥ 230
Time (seconds)
60 – 120
≤ 50
≤ 40
Reflow
Number
260
250
≤5
1
1 or 2
-
tp
Peak
230 °C
Temperature
tp
td
217 °C
tL
180 °C
150 °C
ts
Time
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
13
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Lead Taping & Packaging
W1
ØD
Ød
3±1
Size
Code
Diameter
(mm)
Length
(mm)
KS
MN
MS
MS (Anti-Vibration)
8
10
10
10
12.2
10.2
12.2
12.4
d (mm)
Reel
D (mm)
W1 (mm)
±3
100
100
100
100
±2
380
380
380
380
±2
24
24
24
24
Reel
Quantity
Box
Quantity
400
500
400
400
2,400
3,000
2,400
2,400
Taping for Automatic Insertion Machines
0.4±0.1
4.0±0.1
+0.1
Ø1.5–0.0
B1±0.2
2.0±0.1
1.75±0.1
B0±0.2
–
–
–
+
+
+
F±0.1
W±0.3
T2±0.2
P±0.1
Polarity
User Direction of Unreeling
Size Code
KS
MN
MN (Anti-Vibration)
MS
MS (Anti-Vbration)
DxL
W
P
F
B1
B0
T2
Tolerance
±0.3
±0.1
±0.1
±0.2
±0.2
±0.2
8 x 12.2
10 x 10.2
10 x 10.4
10 x 12.2
10 x 12.4
24.0
24.0
24.0
24.0
24.0
16.0
16.0
16.0
16.0
16.0
11.5
11.5
11.5
11.5
11.5
8.7
10.7
10.7
10.7
10.7
8.7
10.7
11.2
10.7
11.2
12.6
10.1
10.3
12.5
12.7
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
14
Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
Construction Data
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 a variety of reasons:
Polymerization
Slitting
Winding
Welding
Chemical Treatment
Forming
Assembling
Marking
Aging
V-chip forming and
marking
Inspection
Packing
• Slitting of the anode foil after forming
• Attaching the tabs to the anode foil
• Minor mechanical damage caused during winding
Floor
Terminal
Lead line
Rubber
Case
Anode foil
Cathode foil
Separator
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
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Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
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
Hybrid aluminum polymer electrolytic capacitors contain polymer and electrolyte, 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 • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
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Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
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 of ESR or an open 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, 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 • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
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Surface Mount Hybrid Aluminum Polymer Capacitors
A781, 135°C, Hybrid Polymer V-Chip, AEC-Q200
KEMET Electronics Corporation Sales Offices
For a complete list of our global sales offices, please visit www.kemet.com/sales.
Disclaimer
YAGEO Corporation and its affiliates do not recommend the use of commercial or automotive grade products for high reliability applications or manned space flight.
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 indicated or that other
measures may not be required.
KEMET requires its products to be packaged and shipped on pallets. This is because KEMET’s products are specifically designed to be packed onto pallets during
shipment. If for any reason, the products are removed from pallets by the shipping party and shipped to the end customer, then additional external protection is
required. In this instance, an external box with two carton layers and an upwards orientation sticker must be used by the shipping party, with the empty space filled
with filling material, and afterwards sealing the box. If this packing and packaging guideline is not followed by the shipping party, the shipping party, and not KEMET,
will be held responsible for any packaging, packing and/or product damages upon delivery of the products to the end customer. KEMET hereby disclaims any liability
for damages to the products or otherwise that have been, or threaten to be, inflicted, result from or are in any way related to the packaging, packing or damage by the
shipping party in contravention of the packing and packaging guidelines herein.
KEMET is a registered trademark of KEMET Electronics Corporation.
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4112_A781 • 8/8/2023
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