Screw Terminal Aluminum Electrolytic Capacitors
ALS30/31 Series, +85°C
Overview
Applications
Typical applications for KEMET's ALS30/31 Series of capacitors
include smoothing, energy storage or pulse operation in
telecommunication demanding power supplies, process control,
AC motor control, traction, welding, and measuring.
KEMET's ALS30/31 Series of screw terminal capacitors covers
a wide range of case sizes and voltage ratings featuring high
ripple currents and long-life performance. They are ideally suited
for industrial and commercial applications demanding high
reliability and long-life expectancy such as frequency converters,
uninterruptible power supply (UPS) systems and switch mode
power supplies (SMPS).
Benefits
•
•
•
•
•
Compact size
Long life, up to 20,000 hours at +85°C (V
R
, I
R
applied)
High ripple current
Excellent surge voltage capability
Optimized designs available upon request
Part Number System
ALS3
Series
Computer Grade
Aluminum
Electrolytic
0
Stud Option
0 = Plain Can
1 = Threaded
mounting stud
A
Termination
See Termination
Table
153
Capacitance Code (µF)
First 2 digits equals first 2
significant figures, 3rd digit
is the number of additional
zeros.
DA
Size Code
See Dimension
Table
025 = 25
040 = 40
063 = 63
100 = 100
200 = 200
250 = 250
025
Voltage (VDC)
350 = 350
400 = 400
415 = 415
450 = 450
500 = 500
One world. One KEMET
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4031_ALS30_31 • 4/15/2013
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Screw Terminal Aluminum Electrolytic Capacitors – ALS30/31 Series, +85°C
Performance Characteristics
Item
Capacitance Range
Rated Voltage
Operational Temperature Range
Storage Temperature Range
Capacitance Tolerance
100 – 680,000 µF
25 – 500 VDC
-40 to +85°C
-55 to +85°C
±20% at 100 Hz / +20°C
D (mm)
36
Operational Lifetime
51
66
77,90
End of Life Requirement
Shelf Life
Leakage Current
Rated Voltage and Ripple Current
at +85°C (hours)
11,000
18,000
19,000
20,000
Rated Voltage at +85°C (hours)
22,000
36,000
38,000
40,000
Performance Characteristics
∆ 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
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).
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).
Requirements
Case Length < 220 mm
Vibration Test Specifications
Case Length ≥ 220 mm
No leakage of electrolyte or other
visible damage. Deviations in
capacitance and tanδ from initial
measurements must not exceed:
∆ C/C < 5%
Standards
IEC 60384–4 long life grade 40/85/56
Surge Voltage
Condition
≤ 30s Surge followed by a no load
period of 330s, 1,000 cycles at +85°C
≤ 500 ms surge, 100 cycles at 20°C,
occurring randomly throughout the life
of the capacitor
Voltage (VDC)
25
28.75
40
46
63
72.5
100
115
200
230
350
250
288
400
350
385
500
400
440
520
450
495
550
500
550
600
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
A4031_ALS30_31 • 4/15/2013
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Screw Terminal Aluminum Electrolytic Capacitors – ALS30/31 Series, +85°C
Test Method & Performance
Endurance Life Test
Conditions
Temperature
Test Duration
Ripple Current
Voltage
+85°C
5,000 hours
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
Performance
Performance
Capacitance Change
Equivalent Series Resistance
Leakage Current
The following specifications will be satisfied when the capacitor is tested at +20°C:
≤ 160 V
> 160 V
Does not exceed 200% of the initial value
Does not exceed leakage current limit
Within 15% of the initial value
Within 10% of the initial value
Dimensions – Millimeters
Dimensions in mm
Size Code
DA
DB
DE
DF
KE
KF
MF
ND
NF
NP
NT
QC
QD
QH
QP
QT
D
±1
36
36
36
36
51
51
66
77
77
77
77
90
90
90
90
90
L
±2
52
62
82
105
82
105
105
75
105
146
220
67
75
98
146
220
LT
±1
58.5
67.5
87.5
111.5
86.5
110.5
110.5
79.5
110.5
150.5
224.5
71.5
79.5
103.5
149.5
223.5
S
±0.5
12.8
12.8
12.8
12.8
22.2
22.2
28.5
31.8
31.8
31.8
31.8
31.8
31.8
31.8
31.8
31.8
V
Nominal
8
8
8
8
13.7
13.7
15.8
19
19
19
19
25
25
25
25
25
Mounting Stud
(M x H)
±1
M8 x 12
M8 x 12
M8 x 12
M8 x 12
M12 x 16
M12 x 16
M12 x 16
M12 x 16
M12 x 16
M12 x 16
M12 x 16
M12 x 16
M12 x 16
M12 x 16
M12 x 16
M12 x 16
Mounting
Clip
V3/H2/UTE2736
V3/H2/UTE2736
V3/H2/UTE2736
V3/H2/UTE2736
V4/UTE2737
V4/UTE2737
V10/UTE2738
V11
V11
V11
V11
V90
V90
V90
V90
V90
Weight
Grams
75
90
115
140
220
300
505
495
690
960
1450
615
690
900
1345
2000
Note: Dimensions include 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
A4031_ALS30_31 • 4/15/2013
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Screw Terminal Aluminum Electrolytic Capacitors – ALS30/31 Series, +85°C
Termination Tables
Termination
Code
Diameter (mm)
36
51
66
77
90
A
•
•
•
•
•
C
G
J
M
R
•
•
•
Termination
Style
Round
Oval
Round
Round
Round
Round
Oval
•
•
•
T
± 0.5
•
•
Termination
Code
A (D = 36)
A (D > 36)
C
G
J
M
R
Thread
DT
± 0.5
8
13
13
17
17
8
15
Thread Depth (TD)
Minimum
10
10
10
11.8
8.8
10
10
Z
Nominal
Standard Termination Option
M5
M5
M6
M6
M6
M5
M5
7.14
5.5
Other Termination Options
5.5
6.35
3.17
7.14
5.5
10
13
Dimensions in mm
LT
L
T
(From Deck)
V
TD
Termination codes:
A, R
Oval
Safety vent
Termination codes:
A (D=36), C, G, J, M
Round
D
S
DT
V
TD
DT
Optional Mounting Stud
(M x H)
Insulated Sleeve
Z
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
A4031_ALS30_31 • 4/15/2013
4
Screw Terminal Aluminum Electrolytic Capacitors – ALS30/31 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
A4031_ALS30_31 • 4/15/2013
5
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