Pin/Solder Tag
NOT FOR NEW DESIGN
ALP20 and ALT20/21, +85°C
Overview
Applications
The KEMET ALP20 and ALT20/21 capacitors feature low
ESR and high frequency impedance.
The ALP solder pin and ALT solder tag range details are
incorporated herein, primarily, for maintenance and/or
replacement purposes.
Benefits
• Solder tag (ALT) and DIN standard solder pin (ALP)
• Long life, up to 26,000 hours at +85°C (VR , IR applied)
• ALC snap-in should be considered for new designs
Part Number System
ALP
20A
682
AB
010
Series
Version
Capacitance Code (µF)
Size Code
Rated Voltage (VDC)
First two digits
represent significant
figures. Third digit
specifies number of
zeros.
See Dimension Table
ALP = Solder pin
ALT = Solder tag
20A = Standard
21A = Threaded
Mounting Stud
(ALT only)
040 = 40
063 = 63
100 = 100
200 = 200
250 = 250
385 = 385
400 = 400
450 = 450
Built Into Tomorrow
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4040_ALP_T20_21 • 8/8/2023
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NOT FOR NEW DESIGN
Pin/Solder Tag – ALP20 and ALT20/21, +85°C
Performance Characteristics
Item
Performance Characteristics
Capacitance Range
Rated Voltage
22 – 150,000 µF
40 – 450 VDC
Operating Temperature
−40 to +85°C
Storage Temperature Range
−55 to +85°C
Capacitance Tolerance
−10/+30%, ±20% at 100 Hz/+20°C (only at 200 V)
D (mm)
Rated Voltage and Ripple Current at +85°C (hours)
25
12,000
30
15,000
35
18,000
40
26,000
Operational Lifetime
End of Life Requirement
Shelf Life
Leakage Current
Standards
∆ C/C < ±10%
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.
IEC 60384–4
Surge Voltage
Condition
≤ 30 second surge, 1,000 cycles at +85°C
Voltage (VDC)
40
63
100
200
385
46
72.5
115
230
423.5
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4040_ALP_T20_21 • 8/8/2023
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NOT FOR NEW DESIGN
Pin/Solder Tag – ALP20 and ALT20/21, +85°C
Test Method & Performance
Endurance Life Test
Conditions
Performance
Temperature
+85°C
Test Duration
5,000 hours
Ripple Current
Voltage
Performance
Available on request
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
≤ 100 V
Within 15% of the initial value
> 100 V
Within 10% of the initial value
Does not exceed 200% of the initial value
Does not exceed leakage current limit
Dimensions – Millimeters (ALP)
D = 25 mm
Connections: Hole 1 represents +ve. Hole 5 Represents -ve. Terminals 2,3, and 4 may be at negative terminal potential due to the presence of electrolyte.
They are intended for mechanical connections only. It is recommended that they are soldered to the printed cicuit board. Additional dummy pins are
provided for stability. Note that the case and dummy pins may be at negavtive terminal potential
Dimensions in mm
Size Code
AB
BB
CB
CD
DB
DD
DE
DF
D
L
LL
±1
±2
±0.5
Approximate
Weight
Grams
25
30
35
35
40
40
40
40
45
45
45
55
45
55
75
105
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
30
50
65
75
80
95
125
170
Note: Dimensions include sleeving
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4040_ALP_T20_21 • 8/8/2023
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NOT FOR NEW DESIGN
Pin/Solder Tag – ALP20 and ALT20/21, +85°C
Dimensions – Millimeters (ALP) cont.
D = 30/35 mm
D = 40 mm
Connections: Hole 1 represents +ve. Hole 5 Represents -ve. Terminals 2,3, and 4 may be at negative terminal potential due to the presence of electrolyte.
They are intended for mechanical connections only. It is recommended that they are soldered to the printed cicuit board. Additional dummy pins are
provided for stability. Note that the case and dummy pins may be at negavtive terminal potential
Dimensions in mm
Size Code
AB
BB
CB
CD
DB
DD
DE
DF
D
L
LL
±1
±2
±0.5
Approximate
Weight
Grams
25
30
35
35
40
40
40
40
45
45
45
55
45
55
75
105
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
30
50
65
75
80
95
125
170
Note: Dimensions include sleeving
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4040_ALP_T20_21 • 8/8/2023
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NOT FOR NEW DESIGN
Pin/Solder Tag – ALP20 and ALT20/21, +85°C
Dimensions – Millimeters (ALT)
Dimensions in mm
Size Code
D
AA
AB
BB
CB
CD
DB
DD
DE
DF
L
S
LL
±1
±2
±0.5
±1
25
25
30
35
35
40
40
40
40
35
45
45
45
55
45
55
75
105
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
Mounting Approximate
Stud (M x H)
Weight
Grams
Nominal
M8 x 12
M8 x 12
M8 x 12
M8 x 12
M8 x 12
M8 x 12
M8 x 12
M8 x 12
M8 x 12
30
50
65
75
80
95
125
170
Mounting
Clamp
±0.8
V2/H1
V2/H1
V3/H2/2736
V3/H2/2736
V9
V9
V9
V9
Note: Dimensions include sleeving
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4040_ALP_T20_21 • 8/8/2023
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NOT FOR NEW DESIGN
Pin/Solder Tag – ALP20 and ALT20/21, +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 • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4040_ALP_T20_21 • 8/8/2023
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NOT FOR NEW DESIGN
Pin/Solder Tag – ALP20 and ALT20/21, +85°C
Failure Rate cont.
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
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 • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4040_ALP_T20_21 • 8/8/2023
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NOT FOR NEW DESIGN
Pin/Solder Tag – ALP20 and ALT20/21, +85°C
Table 1A – Ratings & Part Number Reference (ALP)
VDC
Rated Capacitance
(µF)
Capacitance
Tolerance
Size Code
Case Size
Part Number
40
40
40
40
63
63
63
63
63
63
100
250
400
450
2200
4700
6800
10000
2200
3300
4700
6800
10000
15000
4700
1000
100
470
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
AB
CB
CD
DD
BB
CB
CD
DD
DE
DF
DE
DE
BB
DF
25 x 45
35 x 45
35 x 55
40 x 55
30 x 45
35 x 45
35 x 55
40 x 55
40 x 75
40 x 105
40 x 75
40 x 75
30 x 45
40 x 105
ALP20A222AB040
ALP20A472CB040
ALP20A682CD040
ALP20A103DD040
ALP20A222BB063
ALP20A332CB063
ALP20A472CD063
ALP20A682DD063
ALP20A103DE063
ALP20A153DF063
ALP20A472DE100
ALP20A102DE250
ALP20A101BB400
ALP20A471DF450
VDC
Rated Capacitance
(µF)
Capacitance
Tolerance
Size Code
Case Size
Part Number
Table 1B – Ratings & Part Number Reference (ALT)
VDC
Rated Capacitance
(µF)
Capacitance
Tolerance
Size Code
Case Size
Part Number
40
40
40
63
200
250
400
400
450
3300
4700
10000
1000
680
680
100
220
100
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
−10/+30%
BB
CB
DD
AA
CD
DD
BB
CD
BB
30 x 45
35 x 45
40 x 55
25 x 35
35 x 55
40 x 55
30 x 45
35 x 55
30 x 45
ALT20A332BB040
ALT20A472CB040
ALT20A103DD040
ALT20A102AA063
ALT20A681CD200
ALT20A681DD250
ALT20A101BB400
ALT20A221CD400
ALT20A101BB450
VDC
Rated Capacitance
(µF)
Capacitance
Tolerance
Size Code
Case Size
Part Number
Print Detail
• KEMET Logo
• Rated capacitance
• Capacitance tolerance
• Rated voltage
• Climatic Category
• Date of manufacture and Batch No.
• Article code
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
A4040_ALP_T20_21 • 8/8/2023
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NOT FOR NEW DESIGN
Pin/Solder Tag – ALP20 and ALT20/21, +85°C
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 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. This sample size is controlled
by the use of recognized sampling tables defined in BS 6001.
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 • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Extended cathode
Anode foil
Foil tabs
Tissues
Cathode foil
Etching
Forming
Winding
Decking
Impregnation
Assembly
Aging
Testing
Sleeving
Packing
A4040_ALP_T20_21 • 8/8/2023
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NOT FOR NEW DESIGN
Pin/Solder Tag – ALP20 and ALT20/21, +85°C
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.
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A4040_ALP_T20_21 • 8/8/2023
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