ALS32/33 Series, +85°C

Screw Terminal Aluminum Electrolytic Capacitors
ALS32/33 Series, +85°C
Overview
Applications
KEMET’s ALS32/33 Series of screw terminal capacitors meets
the requirements of the Asian market. This range offers high CV
per unit volume coupled with high ripple currents and long-life
performance.
KEMET’s ALS32/33 Series of capacitors is designed for industrial
and commercial applications such as switch mode power
supplies (SMPS), uninterruptible power supply (UPS) systems,
variable speed drives, frequency inverters, welding equipment,
and energy storage in pulse discharge applications.
Benefits
•
•
•
•
•
Case sizes and terminals for the Asian market
Long life, up to 20,000 hours at +85°C (VR, IR applied)
High ripple current
Excellent surge voltage capability
Optimized designs available upon request
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Part Number System
ALS3
2
A
391
D2C
350
Series
Stud Option
Termination
Capacitance Code (µF)
Size Code
Voltage (VDC)
Screw Terminal
Aluminum Electrolytic
2 = Plain Can
3 = Threaded mounting
stud
See Termination
Table
First 2 digits equals first 2
significant figures, 3rd digit is
the number of additional zeros.
See Dimension Table
350 = 350
400 = 400
450 = 450
500 = 500
One world. One KEMET
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4032_ALS32_33 • 5/22/2015
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
Performance Characteristics
Item
Performance Characteristics
Capacitance Range
Rated Voltage
220 – 18,000 µF
350 – 500 VDC
Operating Temperature
-40 to +85°C
Storage Temperature Range
-55 to +85°C
Capacitance Tolerance
±20% at 100 Hz / +20°C
Operational Lifetime
End of Life Requirement
Shelf Life
Leakage Current
D (mm)
Rated Voltage and Ripple Current
at +85°C (hours)
Rated Voltage at +85°C (hours)
36
11,000
22,000
51
18,000
36,000
63.5
19,000
38,000
77.90
20,000
40,000
∆ C/C < ±10%, ESR < 2 x initial ESR value, IL < initial specified limit
2,000 hours at +85°C or 30,000 hours at +40°C 0 VDC
I = 0.003 CV or 6,000 (µA, whichever is smaller)
C = rated capacitance (µF), V = rated voltage (VDC). Voltage applied for 5 minutes at +20°C.
Procedure
Case Length < 220 mm
0.75 mm displacement amplitude
or 10 g maximum acceleration.
Vibration applied for three 2-hour
sessions at 10 – 55 Hz
(Capacitor clamped by body).
Case Length ≥ 220 mm
0.35 mm displacement amplitude
or 5 g maximum acceleration.
Vibration applied for three 0.5
hour sessions at 10 – 55 Hz
(Capacitor clamped by body).
Vibration Test Specifications
Standards
Requirements
No leakage of electrolyte or other
visible damage. Deviations in
capacitance and tanδ from initial
measurements must not exceed:
∆ C/C < 5%
IEC 60384–4 long life grade 40/85/56
Surge Voltage
Condition
Voltage (VDC)
350
400
450
500
≤ 30s Surge followed by a no load
period of 330s, 1,000 cycles at +85°C
385
440
495
550
≤ 500 ms surge, 100 cycles at 20°C,
occurring randomly throughout the life
of the capacitor
500
520
550
600
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4032_ALS32_33 • 5/22/2015
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
Test Method & Performance
Endurance Life Test
Conditions
Performance
Temperature
+85°C
Test Duration
5,000 hours
Ripple Current
Voltage
Performance
Rated ripple current in specified table
The sum of DC voltage and the peak AC voltage must not exceed the rated voltage of the capacitor
The following specifications will be satisfied when the capacitor is tested at +20°C:
Capacitance Change
Equivalent Series Resistance
Leakage Current
≤ 160 V
Within 15% of the initial value
> 160 V
Within 10% of the initial value
Does not exceed 200% of the initial value
Does not exceed leakage current limit
Dimensions – Millimeters
Reference
Size Code
Size (mm)
Dimensions in mm
Mounting
Stud (M x H)
Mounting
Clip
Approximate
Weight
Grams
8
M8 x 12
V3/H2/UTE2736
80
D
L
LT
S
T
V
±0.8
±1.6
±1
±0.5
±0.8
Nominal
61.5
12.8
7.14
36 x 55
D2C
34.9
54.0
36 x 80
D3C
34.9
79.4
87.5
12.8
7.14
8
M8 x 12
V3/H2/UTE2736
114
36 x 93
D3L
34.9
92.1
100.5
12.8
7.14
8
M8 x 12
V3/H2/UTE2736
131
51 x 68
K2L
50.8
66.7
73.0
22.2
5.5
13.7
M12 x 16
V4/UTE2737
165
51 x 93
K3L
50.8
92.1
98.0
22.2
5.5
13.7
M12 x 16
V4/UTE2737
275
51 x 115
KJA
50.8
114.3
119.0
22.2
5.5
13.7
M12 x 16
V4/UTE2737
340
51 x 131
K5C
50.8
130.2
136.0
22.2
5.5
13.7
M12 x 16
V4/UTE2737
385
63.5 x 93
L3L
63.5
92.1
97.0
28.5
5.5
15.8
M12 x 16
V8
430
63.5 x 115
LJA
63.5
114.3
119.0
28.5
5.5
15.8
M12 x 16
V8
535
63.5 x 131
L5C
63.5
130.2
135.0
28.5
5.5
15.8
M12 x 16
V8
600
77 x 115
NJA
76.2
114.3
119.0
31.8
5.5
19
M12 x 16
V11
770
77 x 131
N5C
76.2
130.2
135.0
31.8
5.5
19
M12 x 16
V11
865
77 x 150
N5R
76.2
149.2
154.0
31.8
5.5
19
M12 x 16
V11
990
90 x 150
Q5R
88.9
149.2
154.0
31.8
5.5
25
M12 x 16
V90
1360
90 x 194
Q7L
88.9
193.7
198.0
31.8
5.5
25
M12 x 16
V90
1870
90 x 220
Q8L
88.9
219.1
224.0
31.8
5.5
25
M12 x 16
V90
2000
Note: Add 0.4 mm to D (1.1 mm when D = 88.9) and 1.1 mm to L for sleeving. LT listed is for A-type termination code.
Information for other termination codes is available upon request.
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4032_ALS32_33 • 5/22/2015
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
Termination Tables
Termination Code
Diameter (mm)
34.9
50.8
63.5
76.2
88.9
Termination
Code
A
C
•
•
•
•
•
•
•
•
Termination
Style
Thread
T
DT
Thread Depth (TD)
Z
± 0.5
± 0.5
Minimum
Nominal
Standard Termination Option
A (D = 36)
M5
Round
7.14
8
10
A (D > 36)
M5
Oval
5.5
13
10
13
10
10
Other Termination Options
C
M6
Round
5.5
Dimensions in mm
SIDE VIEW
LT
L
S
D
Optional Mounting
Stud (M x H)
T
(From Deck)
OVAL TERMINAL
END VIEW
ROUND TERMINAL
END VIEW
Safety Vent
Safety Vent
V
+
TD
Z
DT
Polarity
Mark
V
+
TD
DT
Polarity Mark
Case Polarity
Due to the presence of electrolyte in the capacitor, the aluminum can and stud mounting will essentially be at the same polarity as the
negative terminal. We recommend that the stud and can be insulated (see accessories for insulating nuts).
Terminations
Aluminum inserts with M5 threads as standard, maximum torque 2NM. Optional M6 threaded inserts have a maximum torque 4NM.
Maximum torque for stud mounting M8:4NM and M12:8NM.
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4032_ALS32_33 • 5/22/2015
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
Shelf Life
The capacitance, ESR and impedance of a capacitor will not change significantly after extended storage periods, however the leakage
current will very slowly increase. KEMET products are particularly stable and allow a shelf life in excess of three years at 40°C. See
sectional specification under each product series for specific data.
Re-age (Reforming) Procedure
Apply the rated voltage to the capacitor at room temperature for a period of one hour, or until the leakage current has fallen to a steady
value below the specified limit. During re-aging a maximum charging current of twice the specified leakage current or 5 mA (whichever
is greater) is suggested.
Reliability
The reliability of a component can be defined as the probability that it will perform satisfactorily under a given set of conditions for a
given length of time.
In practice, it is impossible to predict with absolute certainty how any individual component will perform; thus, we must utilize probability
theory. It is also necessary to clearly define the level of stress involved (e.g. operating voltage, ripple current, temperature and time).
Finally, the meaning of satisfactory performance must be defined by specifying a set of conditions which determine the end of life of the
component.
Reliability as a function of time, R(t), is normally expressed as: R(t)=e-λt
where R(t) is the probability that the component will perform satisfactorily for time t, and λ is the failure rate.
Failure Rate
The failure rate is the number of components failing per unit time. The failure rate of most electronic components follows the
characteristic pattern:
• Early failures are removed during the manufacturing process.
• The operational life is characterized by a constant failure rate.
• The wear out period is characterized by a rapidly increasing failure rate.
The failures in time (FIT) are given with a 60% confidence level for the various type codes. By convention, FIT is expressed as 1 x 10-9
failures per hour. Failure rate is also expressed as a percentage of failures per 1,000 hours.
e.g., 100 FIT = 1 x 10-7 failures per hour = 0.01%/1,000 hours
End of Life Definition
Catastrophic Failure: short circuit, open circuit or safety vent operation
Parametric Failure:
• Change in capacitance > ±10%
• Leakage current > specified limit
• ESR > 2 x initial ESR value
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4032_ALS32_33 • 5/22/2015
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
MTBF
The mean time between failures (MTBF) is simply the inverse of the failure rate.
MTBF= 1/λ
Failure Rate
early failures
wear out
operational life
Time
The failure rate is derived from our periodic test results. The failure rate (λR) is, therefore, only given at test temperature for life tests. An
estimation is also given at 40°C. The expected failure rate for this capacitor range is based on our periodic test results for capacitors
with structural similarity. Failure rate is frequently quoted in FIT (Failures In Time) where 1 FIT = 1 x 10-9 failures per hour. Failure rate
per hour includes both catastrophic and parametric failures.
Failure Rate per Hour
Ta
85°C 250 FIT 40°C 12 FIT 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
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 world wide 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.
Because of customer requirements, there may appear additional markings such as LF = Lead Free or LFW = Lead Free Wires on the
label.
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4032_ALS32_33 • 5/22/2015
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
Table 1 – Ratings & Part Number Reference
VDC
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
450
450
450
450
450
450
450
450
450
450
450
450
450
450
450
450
450
VDC
Rated
Capacitance
120 Hz
25°C (µF)
390
470
560
680
820
1000
1200
1500
1800
2200
2700
3300
3900
5600
6800
8200
10000
12000
15000
18000
330
390
470
560
680
820
1000
1200
1500
1800
2200
2700
3300
3900
4700
5600
6800
8200
10000
12000
15000
270
330
390
470
560
680
820
1000
1200
1500
1800
2200
2700
3300
3900
4700
5600
Rated
Capacitance
Size Code
Case Size
D x L (mm)
D2C
D3C
D3C
D3C
D3L
D3L
K2L
K2L
K3L
K3L
K5C
K5C
LJA
NJA
N5C
N5R
Q5R
Q5R
Q7L
Q8L
D2C
D3C
D3C
D3C
D3L
D3L
K2L
K2L
K3L
K3L
K5C
L3L
LJA
L5C
NJA
N5C
N5R
Q5R
Q5R
Q7L
Q8L
D2C
D3C
D3C
D3C
D3L
D3L
K2L
K2L
K3L
KJA
K5C
L3L
LJA
L5C
NJA
N5C
N5R
36 x 55
36 x 80
36 x 80
36 x 80
36 x 93
36 x 93
51 x 68
51 x 68
51 x 93
51 x 93
51 x 131
51 x 131
63.5 x 115
77 x 115
77 x 131
77 x 150
90 x 150
90 x 150
90 x 194
90 x 220
36 x 55
36 x 80
36 x 80
36 x 80
36 x 93
36 x 93
51 x 68
51 x 68
51 x 93
51 x 93
51 x 131
63.5 x 93
63.5 x 115
63.5 x 131
77 x 115
77 x 131
77 x 150
90 x 150
90 x 150
90 x 194
90 x 220
36 x 55
36 x 80
36 x 80
36 x 80
36 x 93
36 x 93
51 x 68
51 x 68
51 x 93
51 x 115
51 x 131
63.5 x 93
63.5 x 115
63.5 x 131
77 x 115
77 x 131
77 x 150
Size Code
Case Size
Ripple Current
120 Hz
85°C (A)
2.8
3.5
3.8
4.1
4.8
5.2
5.5
5.8
7.7
8.2
10.4
11.1
10.8
16.4
18.2
19.9
25.5
25.9
32.4
38.5
2.6
3.3
3.6
3.9
4.5
4.9
5.2
5.6
7.3
7.8
9.8
11.3
13.2
14.6
15.9
17.6
19.3
25.6
26.5
30.9
37.4
2.5
3.2
3.4
3.7
4.2
4.6
5.0
5.3
6.9
8.1
9.3
10.7
12.5
14.6
15.3
18.0
19.7
20 kHz
85°C (A)
5.2
6.7
7.2
7.7
8.8
9.3
8.9
8.9
12.5
12.5
16.7
16.8
15.3
22.7
23.6
25.5
33.5
32.4
41.2
47.6
5.4
6.9
7.5
8.0
8.7
9.2
9.0
9.1
12.4
12.5
16.4
18.3
21.1
22.1
22.7
23.7
25.6
36.3
35.6
40.7
47.7
5.4
6.9
7.4
7.9
8.6
9.2
9.0
9.1
12.3
14.5
16.3
18.3
21.1
24.1
22.7
26.5
28.4
Ripple Current
ESR
Maximum
Impedance
Maximum
120 Hz
25°C (mΩ)
352
291
245
203
170
141
116
99
78
67
52
45
38
30
28
24
18
16
13
12
351
295
246
208
182
152
132
113
89
76
59
49
40
37
32
30
25
18
16
14
12
383
312
265
221
196
163
142
120
94
75
63
53
43
36
33
28
24
20 kHz
25°C (mΩ)
227
187
158
132
110
92
75
66
50
44
34
30
25
21
21
18
13
12
10
9
207
174
146
123
112
94
84
74
57
50
37
31
26
25
21
21
18
12
11
10
9
215
175
149
125
115
96
86
75
56
45
38
32
26
22
22
18
16
ALS3(1)(2)391D2C350
ALS3(1)(2)471D3C350
ALS3(1)(2)561D3C350
ALS3(1)(2)681D3C350
ALS3(1)(2)821D3L350
ALS3(1)(2)102D3L350
ALS3(1)(2)122K2L350
ALS3(1)(2)152K2L350
ALS3(1)(2)182K3L350
ALS3(1)(2)222K3L350
ALS3(1)(2)272K5C350
ALS3(1)(2)332K5C350
ALS3(1)(2)392LJA350
ALS3(1)(2)562NJA350
ALS3(1)(2)682N5C350
ALS3(1)(2)822N5R350
ALS3(1)(2)103Q5R350
ALS3(1)(2)123Q5R350
ALS3(1)(2)153Q7L350
ALS3(1)(2)183Q8L350
ALS3(1)(2)331D2C400
ALS3(1)(2)391D3C400
ALS3(1)(2)471D3C400
ALS3(1)(2)561D3C400
ALS3(1)(2)681D3L400
ALS3(1)(2)821D3L400
ALS3(1)(2)102K2L400
ALS3(1)(2)122K2L400
ALS3(1)(2)152K3L400
ALS3(1)(2)182K3L400
ALS3(1)(2)222K5C400
ALS3(1)(2)272L3L400
ALS3(1)(2)332LJA400
ALS3(1)(2)392L5C400
ALS3(1)(2)472NJA400
ALS3(1)(2)562N5C400
ALS3(1)(2)682N5R400
ALS3(1)(2)822Q5R400
ALS3(1)(2)103Q5R400
ALS3(1)(2)123Q7L400
ALS3(1)(2)153Q8L400
ALS3(1)(2)271D2C450
ALS3(1)(2)331D3C450
ALS3(1)(2)391D3C450
ALS3(1)(2)471D3C450
ALS3(1)(2)561D3L450
ALS3(1)(2)681D3L450
ALS3(1)(2)821K2L450
ALS3(1)(2)102K2L450
ALS3(1)(2)122K3L450
ALS3(1)(2)152KJA450
ALS3(1)(2)182K5C450
ALS3(1)(2)222L3L450
ALS3(1)(2)272LJA450
ALS3(1)(2)332L5C450
ALS3(1)(2)392NJA450
ALS3(1)(2)472N5C450
ALS3(1)(2)562N5R450
ESR
Impedance
Part Number
Part Number
(1) Mounting Code: 0 = plain can, 1 = threaded mounting stud
(2) Termination Code: See Termination Tables for available options
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4032_ALS32_33 • 5/22/2015
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
Table 1 – Ratings & Part Number Reference cont'd
VDC
450
450
450
450
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
VDC
Rated
Capacitance
120 Hz
25°C (µF)
6800
8200
10000
12000
220
270
330
390
470
560
680
820
1000
1200
1500
1800
2200
2700
3300
3900
4700
5600
6800
8200
10000
Rated
Capacitance
Size Code
Case Size
D x L (mm)
Q5R
Q5R
Q7L
Q8L
D2C
D3C
D3C
D3C
D3L
D3L
K2L
K2L
K3L
KJA
K5C
L3L
LJA
L5C
NJA
N5C
N5R
Q5R
Q5R
Q7L
Q8L
90 x 150
90 x 150
90 x 194
90 x 220
36 x 55
36 x 80
36 x 80
36 x 80
36 x 93
36 x 93
51 x 68
51 x 68
51 x 93
51 x 115
51 x 131
63.5 x 93
63.5 x 115
63.5 x 131
77 x 115
77 x 131
77 x 150
90 x 150
90 x 150
90 x 194
90 x 220
Size Code
Case Size
Ripple Current
120 Hz
85°C (A)
24.6
25.7
30.0
35.7
2.3
2.9
3.2
3.5
3.9
4.3
4.6
4.9
6.4
7.2
8.4
9.9
11.6
13.2
14.2
16.9
18.5
23.1
24.1
28.6
34.4
20 kHz
85°C (A)
36.3
35.8
40.7
46.9
4.1
5.3
5.8
6.2
6.8
7.3
7.4
7.7
10.3
11.0
12.7
15.3
17.8
19.3
19.7
23.5
25.3
32.2
32.3
37.8
44.3
Ripple Current
ESR
Maximum
Impedance
Maximum
120 Hz
25°C (mΩ)
19
17
15
14
602
489
402
341
303
256
219
186
146
142
114
83
68
65
56
42
35
29
25
21
18
20 kHz
25°C (mΩ)
13
12
10
10
427
347
285
243
221
187
162
138
107
109
88
61
51
50
44
32
27
22
19
16
14
ALS3(1)(2)682Q5R450
ALS3(1)(2)822Q5R450
ALS3(1)(2)103Q7L450
ALS3(1)(2)123Q8L450
ALS3(1)(2)221D2C500
ALS3(1)(2)271D3C500
ALS3(1)(2)331D3C500
ALS3(1)(2)391D3C500
ALS3(1)(2)471D3L500
ALS3(1)(2)561D3L500
ALS3(1)(2)681K2L500
ALS3(1)(2)821K2L500
ALS3(1)(2)102K3L500
ALS3(1)(2)122KJA500
ALS3(1)(2)152K5C500
ALS3(1)(2)182L3L500
ALS3(1)(2)222LJA500
ALS3(1)(2)272L5C500
ALS3(1)(2)332NJA500
ALS3(1)(2)392N5C500
ALS3(1)(2)472N5R500
ALS3(1)(2)562Q5R500
ALS3(1)(2)682Q5R500
ALS3(1)(2)822Q7L500
ALS3(1)(2)103Q8L500
ESR
Impedance
Part Number
Part Number
(1) Mounting Code: 0 = plain can, 1 = threaded mounting stud
(2) Termination Code: See Termination Tables for available options
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
Mechanical Data
Polarity and Reversed Voltage
Aluminium Electrolytic capacitors manufactured for use in DC applications contain an anode foil and a cathode foil. As such, they are
polarized devices and must be connected with the +ve to the anode foil and the -ve to the cathode foil. If this were to be reversed then
the electrolytic process that took place in forming the oxide layer on the anode would be recreated in trying to form an oxide layer on
the cathode. In forming the cathode foil in this way, heat would be generated and gas given off within the capacitor, usually leading to
catastrophic failure.
The cathode foil already possesses a thin stabilized oxide layer. This thin oxide layer is equivalent to a forming voltage of approximately
2 V. As a result, the capacitor can withstand a voltage reversal of up to 2 V for short periods. Above this voltage, the formation process
will commence. Aluminium Electrolytic capacitors can also be manufactured for use in intermittent AC applications by using two anode
foils in place of one anode and one cathode.
Mounting Position
The capacitor can be mounted in any position as long as the safety vent can operate. It is possible for some electrolyte to be expelled.
As this is a conducting liquid, suitable precautions should be initiated by the system designer to avoid secondary short circuits.
The capacitors are designed to be mounted in free air and are not suitable for submersion in liquid.
Vibration
10 – 55 Hz at 0.75 mm or 10 g for 3 x 2 hours duration, except 220 mm long cans 10 – 55 Hz at 0.35 mm or 5 g for 3 x 0.5 hours
duration. Custom designs can be made in a 66 mm diameter (M6 deck), with a vibration capability of 20 g (10 – 56 Hz at 0.75 mm and
56 – 500 Hz 20 g for 3 x 0.5 hours duration)
Insulating Resistance
≥ 100 MΩ at 100 VDC across insulating sleeve. UL recognized sleeving is available for custom parts in this range, upon request.
(UL No. E358957)
Voltage Proof
≥ 2,500 VDC across insulating sleeve
Safety Vent
A safety vent for overpressure is featured on terminal deck. This is in the form of a rubber plug designed to relieve build-up of internal
pressure due to overstress or catastrophic failure.
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4032_ALS32_33 • 5/22/2015
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
Marking
KEMET Logo
Rated Capacitance,
Capacitance Tolerance
Climatic Category
Date of Manufacture,
Batch Number
Rated Voltage (VDC)
Part Number Code
Polarity Stripe (-)
(Not Shown)
Construction
Screw Terminal
Insulating End Disc
Detailed Cross Section
Safety Vent
Deck
Insulating Sleeve
Laser Welded
Terminal Tab
Aluminum Can
Laser Welded
Terminal Tabs
Margin
Aluminum Can
Insulating Sleeve
Deck
Paper Spacer Impregnated
with Electrolyte
(First Layer)
Polarity Mark (+)
Screw Terminal (+)
Cathode Aluminum
Foil, Etched
(Second Layer)
Paper Spacer Impregnated
with Electrolyte
(Third Layer)
Anode Aluminum Foil, Etched,
Covered with Aluminum Oxide
(Fourth Layer)
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
Safety Vent Plug
Screw Terminal (-)
A4032_ALS32_33 • 5/22/2015
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
Construction cont'd
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.
Extended cathode
Anode foil
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 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 sleeved and
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
A sample from each batch is taken by the quality department after
completion of the production process.
The following tests are applied and may be varied at the request
of the customer. In this case the batch, or special procedure, will
determine the course of action.
Electrical:
• Leakage current
• Capacitance
• ESR
• Impedance
• Tan Delta
Mechanical/Visual:
• Overall dimensions
• Torque test of mounting stud
• Print detail
• Box labels
• Packaging, including packed
quantity
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
Foil tabs
Tissues
Cathode foil
Etching
Forming
Winding
Decking
Impregnation
Assembly
Aging
Testing
Sleeving
Packing
A4032_ALS32_33 • 5/22/2015
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
KEMET Corporation
World Headquarters
Europe
Asia
Southern Europe
Sasso Marconi, Italy
Tel: 39-051-939111
Northeast Asia
Hong Kong
Tel: 852-2305-1168
Mailing Address:
P.O. Box 5928
Greenville, SC 29606
Skopje, Macedonia
Tel: 389-2-55-14-623
Shenzhen, China
Tel: 86-755-2518-1306
www.kemet.com
Tel: 864-963-6300
Fax: 864-963-6521
Central Europe
Landsberg, Germany
Tel: 49-8191-3350800
Corporate Offices
Fort Lauderdale, FL
Tel: 954-766-2800
Kamen, Germany
Tel: 49-2307-438110
North America
Northern Europe
Harlow, United Kingdom
Tel: 44-1279-460122
Taipei, Taiwan
Tel: 886-2-27528585
Espoo, Finland
Tel: 358-9-5406-5000
Southeast Asia
Singapore
Tel: 65-6701-8033
2835 KEMET Way
Simpsonville, SC 29681
Southeast
Lake Mary, FL
Tel: 407-855-8886
Northeast
Wilmington, MA
Tel: 978-658-1663
Central
Novi, MI
Tel: 248-306-9353
Beijing, China
Tel: 86-10-5877-1075
Shanghai, China
Tel: 86-21-6447-0707
Seoul, South Korea
Tel: 82-2-6294-0550
Penang, Malaysia
Tel: 60-4-6430200
Bangalore, India
Tel: 91-806-53-76817
West
Milpitas, CA
Tel: 408-433-9950
Mexico
Guadalajara, Jalisco
Tel: 52-33-3123-2141
Note: KEMET reserves the right to modify minor details of internal and external construction at any time in the interest of product improvement. KEMET does not
assume any responsibility for infringement that might result from the use of KEMET Capacitors in potential circuit designs. KEMET is a registered trademark of
KEMET Electronics Corporation.
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4032_ALS32_33 • 5/22/2015
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
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 Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4032_ALS32_33 • 5/22/2015
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