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
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Part Number System
ALS3
Series
Screw Terminal
Aluminum
Electrolytic
0
Stud Option
0 = Plain Can
1 = Threaded
mounting stud
A
Termination
See Termination
Table
153
Capacitance Code
(µF)
First two digits
represent
significant
figures. Third digit
specifies number
of zeros.
DA
Size Code
See Dimension
Table
025
Rated Voltage (VDC)
025 = 25
040 = 40
063 = 63
100 = 100
200 = 200
250 = 250
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 • 3/24/2017
1
Screw Terminal Aluminum Electrolytic Capacitors – ALS30/31 Series, +85°C
Performance Characteristics
Item
Capacitance Range
Rated Voltage
Operating Temperature
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
63.5, 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 = 0.006 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 from
initial measurements must not
exceed: ∆ C/C < 5%
Standards
IEC 60384–4 long life grade 40/85/56
Surge Voltage
Test 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 • 3/24/2017
2
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 specified in 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
LF
MF
MJ
ND
NF
NJ
NP
NT
QC
QD
QH
QP
QT
D
±1
36
36
36
36
51
51
63.5
66
66
77
77
77
77
77
90
90
90
90
90
L
±2
52
62
82
105
82
105
105
105
115
75
105
115
146
220
67
75
98
146
220
LT
±1
58.5
67.5
87.5
111.5
86.5
110.5
110.5
110.5
119
79.5
110.5
119
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
28.5
28.5
31.8
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
15.8
15.8
19
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
M12 x 16
M12 x 16
M12 x 16
Mounting
Clip
V3/H2/2736
V3/H2/2736
V3/H2/2736
V3/H2/2736
V4/2737
V4/2737
V8
V10/2738
V10/2738
V11
V11
V11
V11
V11
PYC6045
PYC6045
PYC6045
PYC6045
PYC6045
Approximate
Weight
Grams
75
90
115
140
220
300
485
505
540
495
690
766
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 • 3/24/2017
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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
•
•
•
•
Termination
Code
A (D = 36)
A (D > 36)
C
G
Thread
Termination
Style
Round
Oval
Round
Round
T
±0.5
Standard Termination Option
7.14
5.5
Other Termination Options
5.5
6.35
DT
±0.5
8
13
13
17
Thread Depth (TD)
Minimum
10
10
10
11.8
Z
Nominal
M5
M5
M6
M6
10
Dimensions in mm
SIDE VIEW
LT
L
D
Optional Mounting
Stud (M x H)
OVAL
Termination Codes:
A
Safety Vent
ROUND
Termination Codes:
A (D = 1.375), C, G
Safety Vent
S
T
V
+
TD
Z
DT
Polarity
Mark
V
+
TD
DT
(From Deck)
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 • 3/24/2017
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 • 3/24/2017
5
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