Screw Terminal Aluminum Electrolytic Capacitors
ALS32/33 Series, +85°C
Overview
Applications
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.
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.
Benefits
•
•
•
•
•
Case sizes and terminals for the Asian market
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
2
Stud Option
A
Termination
391
Capacitance Code (µF)
First two digits
represent significant
figures. Third digit
specifies number of
zeros.
D2C
Size Code
See Dimension Table
350
Rated Voltage (VDC)
350 = 350
400 = 400
450 = 450
500 = 500
2 = Plain Can
See Termination Table
3 = Threaded mounting
stud
One world. One KEMET
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
A4032_ALS32_33 • 4/27/2017
1
Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
Performance Characteristics
Item
Capacitance Range
Rated Voltage
Operating Temperature
Storage Temperature Range
Capacitance Tolerance
220 – 18,000 µF
350 – 500 VDC
−40 to +85°C
−55 to +85°C
±20% at 100 Hz/+20°C
D (mm)
36
Operational Lifetime
51
63.5
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
Condition
≤ 30s Surge followed by a no load
period of 330 s, 1,000 cycles at +85°C
≤ 500 ms surge, 100 cycles
at 20°C, occurring randomly
throughout the life of the capacitor
Voltage (VDC)
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
A4032_ALS32_33 • 4/27/2017
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 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
Termination Tables
Termination Code
Diameter (mm)
34.9
50.8
63.5
76.2
88.9
A
•
•
•
•
•
Termination
Style
Round
Oval
Round
C
•
•
•
T
±0.5
Standard Termination Option
7.14
5.5
Other Termination Options
5.5
Termination
Code
A (D = 36)
A (D > 36)
C
Thread
DT
±0.5
8
13
13
Thread Depth (TD)
Minimum
10
10
10
Z
Nominal
M5
M5
M6
10
Dimensions in mm
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 • 4/27/2017
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Screw Terminal Aluminum Electrolytic Capacitors – ALS32/33 Series, +85°C
Dimensions – Millimeters
SIDE VIEW
LT
L
D
Optional Mounting
Stud (M x H)
OVAL
Termination Code: A
Safety Vent
ROUND
Termination Codes:
A (D = 34.9), C
Safety Vent
S
T
V
+
TD
Z
DT
Polarity
Mark
V
+
TD
DT
Polarity Mark
(From Deck)
Reference
Size Code
Size (mm)
36 x 55
36 x 80
36 x 93
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 194
90 x 220
D2C
D3C
D3L
K2L
K3L
KJA
K5C
L3L
LJA
L5C
NJA
N5C
N5R
Q5R
Q7L
Q8L
Dimensions in mm
D
±0.8
34.9
34.9
34.9
50.8
50.8
50.8
50.8
63.5
63.5
63.5
76.2
76.2
76.2
88.9
88.9
88.9
L
±1.6
54.0
79.4
92.1
66.7
92.1
114.3
130.2
92.1
114.3
130.2
114.3
130.2
149.2
149.2
193.7
219.1
LT
±1
61.5
87.5
100.5
73.0
98.0
119.0
136.0
97.0
119.0
135.0
119.0
135.0
154.0
154.0
198.0
224.0
S
±0.5
12.8
12.8
12.8
22.2
22.2
22.2
22.2
28.5
28.5
28.5
31.8
31.8
31.8
31.8
31.8
31.8
T
±0.8
7.14
7.14
7.14
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
V
Nominal
8
8
8
13.7
13.7
13.7
13.7
15.8
15.8
15.8
19
19
19
25
25
25
Mounting
Stud (M x H)
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
Mounting
Clip
V3/H2/2736
V3/H2/2736
V3/H2/2736
V4/2737
V4/2737
V4/2737
V4/2737
V8
V8
V8
V11
V11
V11
PYC6045
PYC6045
PYC6045
Approximate
Weight
Grams
80
114
131
165
275
340
385
430
535
600
770
865
990
1360
1870
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 • 4/27/2017
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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 • 4/27/2017
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