Motor Run Capacitors
C28, Cylindrical Plastic Case, Segmented Film
420 VAC/470 VAC
Overview
Applications
The C28 capacitor is a polypropylene metallized segmented
film capacitor with a cylindrical, plastic can-type design
filled with resin. It uses faston and plastic deck, or
cable terminals.
Typical applications include motor run S3 safety class:
single-phase motors, low power electric motors,
and compressors.
Benefits
• Self-healing
• IMQ approved
• Rated frequency of 50 Hz and 60 Hz
• High capacitance density
• Safety protection
Part Number System
C28
4
Series
A
C
A
4300
AL
0
J
Marking
Case and
Fixing Bolt
Code
Terminal
Style
Capacitance
Code
(pF)
Packaging
Internal
Use
Tolerance
A = Without
fixing bolt/flat
bottom
C = Cylindrical
plastic case with
M8 bolt
D = Quick fit
2 = Single
FASTON 6.3 x 0.8
3 = Double
FASTON 6.3 x 0.8
A = Unipolar
flexible cable
(tinned end)
B = Unipolar
flexible cable
(untinned end)
F = Bipolar cable
(tinned end)
R = Unipolar rigid
cable (tinned
end)
Digits two –
four indicate
the first three
digits of the
capacitance
value.
First digit
indicates the
number of
zeros to be
added.
C28 =
4 = 30,000 hours/ C284:
Motor Run 420 VAC (Class A) A = Standard
Capacitors or 10,000 hours/
470 VAC (Class B)
AA = FASTON
0, 1, 2, 5 =
terminals
Standard
standard
AL = Unipolar cable
L = 300 mm, stripped
8 mm
LF = Bipolar cable
L= 250 mm
unsheathed 40 mm,
stripped 8 mm
LH = Bipolar cable
L = 350 mm
unsheathed 40 mm,
stripped 8 mm
J = 5%
One world. One KEMET
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F3115_C28 • 3/29/2019
1
Motor Run Capacitors
C28, Cylindrical Plastic Case, Segmented Film 420 VAC/470 VAC
Dimensions – Millimeters
Single FASTON
H
2
Bipolar Cable
5.5
300 ±10
H
6.3x0.8
10
D
10± 0.5
2
M
13.5 ±0.5
Double FASTON
H
2
40 ±5
D
10 ±0.5
M
8 ±2
6
6
Polar Cable
5.5
250 ±10
H
6.3x0.8
2.4
D
13.4 ±0.5
D
8 ±2
10±0.5
M
M
13.5 ±0.5
D
H
D
H
±2
Mounting Stud
(M)
+1/-0
±2
Mounting Stud
(M)
+1/-0
25
25
25
25
25
30
30
30
30
30
35
56.5
58
55
58.5
57
56.5
55
69.5
58.5
57
56.5
M8 x 10
M8 x 11
M8 x 12
M8 x 13
M8 x 14
M8 x 15
M8 x 16
M8 x 17
M8 x 18
M8 x 19
M8 x 20
35
35
35
35
35
35
35
40
40
40
40
73.5
55
57
71.5
74
69.5
58.5
73.5
71.5
74
69.5
M8 x 21
M8 x 22
M8 x 23
M8 x 24
M8 x 25
M8 x 26
M8 x 27
M8 x 28
M8 x 29
M8 x 30
M8 x 31
Qualifications
Reference Standards
Vibration Test
IEC 252, EN 60252-1:2011/A1/2013, IMQ
IEC 68-2-6
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Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3115_C28 • 3/29/2019
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Motor Run Capacitors
C28, Cylindrical Plastic Case, Segmented Film 420 VAC/470 VAC
Performance Characteristics
Type of Service
Continuous
Operating Class
C284
Class A 30,000 hours at 420 VAC or Class B 10,000 hours at 470 VAC
Temperature Range
−25°C to +85°C
Storage Temperature
−40°C to +90°C
Rated Voltage
Rated Frequency
Voltage Rise/Fall Time (Maximum)
470 VAC
50 – 60 Hz
20 V/μs
Maximum Permissible Voltage
1.10 x rated voltage
Maximum Permissible Current
1.30 x rated current
Dissipation Factor (DF)
Safety Class
Maximum Altitude
Capacitance Tolerance
Mounting
Can
20 x 10−4 at +20°C, 50 Hz
S3
2,000 m
±5%
Any position
Polypropylene with self-extinguishing features V2 (UL 94)
Noryl with self-extinguishing features VI (UL 94) for diameters > 50 mm
FASTON execution: Nylon PA66 with self-extinguishing features V0
Disk
Cable execution: PC-A with self-extinguishing features V0
For diameters > 40 mm cable execution: Noryl PPO with self-extinguishing features VI
Filling Resin
Dielectric
Plates
Test Voltage Terminal to Terminal
(VTT)
Test Voltage Terminal to Can (VTC)
Epoxy
Polypropylene
Self-healing metal layer
2 Vn for 2 seconds
2,000 V for 2 seconds
Air Distance Between Live Parts
≥ 5 mm
Air Distance Between Live Parts and
Case
≥ 6 mm
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Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3115_C28 • 3/29/2019
3
Motor Run Capacitors
C28, Cylindrical Plastic Case, Segmented Film 420 VAC/470 VAC
Table 1 – Ratings & Part Number Reference
Capacitance
VAC
Value (µF)
Maximum Dimensions (mm)
D
H
dV/dt
(V/µs)
Termination
Packaging
Quantity
Part Number
2
2.5
3
4
5
6
3
8
10
470
470
470
470
470
470
470
470
470
25
25
25
30
30
30
25
30
35
55
55
55
55
55
69.5
55
69.5
69.5
20
20
20
20
20
20
20
20
20
Unipolar flexible cable (tinned end)
Unipolar flexible cable (tinned end)
Unipolar flexible cable (tinned end)
Unipolar flexible cable (tinned end)
Unipolar flexible cable (tinned end)
Unipolar flexible cable (tinned end)
Unipolar rigid cable (tinned end)
Unipolar rigid cable (tinned end)
Unipolar rigid cable (tinned end)
162
162
162
110
110
110
162
110
86
C284ACA4200AL0J
C284ACA4250AL0J
C284ACA4300AL0J
C284ACA4400AL0J
C284ACA4500AL0J
C284ACA4600AL2J
C284ACR4300AL0J
C284ACR4800AL2J
C284ACR5100AL0J
Capacitance
Value (µF)
VAC
B (mm)
H (mm)
dV/dt
(V/µs)
Termination
Packaging
Quantity
Part Number
Marking
MKP C28
Capacitance value
Capacitor class
Climate class/Self-healing dielectric
Safety class
Capacitance value/Date code
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Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3115_C28 • 3/29/2019
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Motor Run Capacitors
C28, Cylindrical Plastic Case, Segmented Film 420 VAC/470 VAC
Marking (cont.d)
Manufacturing Date Code (IEC–60062)
Y = Year, Z = Month
Year
Code
Month
Code
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
A
B
C
D
E
F
H
J
K
L
M
N
P
R
S
T
U
V
W
X
A
January
February
March
April
May
June
July
August
September
October
November
December
1
2
3
4
5
6
7
8
9
O
N
D
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Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3115_C28 • 3/29/2019
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Motor Run Capacitors
C28, Cylindrical Plastic Case, Segmented Film 420 VAC/470 VAC
Environmental Compliance
As a leading global supplier of electronic components and an environmentally conscious company, KEMET continually
aspires to improve the environmental effects of our manufacturing processes and our finished electronic components.
In Europe (RoHS Directive) and in some other geographical areas such as China (China RoHS), legislation has been enacted
to prevent or otherwise limit the use of certain hazardous materials, including lead (Pb), in electronic equipment. KEMET
monitors legislation globally to ensure compliance and endeavors to adjust our manufacturing processes and/or electronic
components as may be required by applicable law.
For military, medical, automotive, and some commercial applications, the use of lead (Pb) in the termination is necessary
and/or required by design. KEMET is committed to communicating RoHS compliance to our customers. Information related
to RoHS compliance will be provided in data sheets and using specific identifiers on the packaging labels.
All KEMET power film capacitors are RoHS compliant.
Materials & Environment
The selection of raw materials that KEMET uses for the production of its electronic components is the result of extensive
experience. KEMET directs specific attention toward environmental protection. KEMET selects its suppliers according to
ISO 9001 standards and performs statistical analyses on raw materials before acceptance for use in manufacturing our
electronic components. All materials are, to the best of KEMET’s knowledge, non-toxic and free from cadmium; mercury;
chrome and compounds; polychlorine triphenyl (PCB); bromide and chlorinedioxins bromurate clorurate; CFC and HCFC;
and asbestos.
Dissipation Factor
Dissipation factor is a complex function involved with capacitor inefficiency. The tgδ may vary up and down with increased
temperature. For more information, refer to Performance Characteristics.
Sealing
Hermetically Sealed Capacitors
As the temperature increases, the pressure inside the capacitor increases. If the internal pressure is high enough, it can
cause a breach in the capacitor. Such a breach can result in leakage, impregnation, filling fluid, or moisture susceptibility.
Barometric Pressure
The altitude at which hermetically sealed capacitors are operated controls the capacitor's voltage rating. As the barometric
pressure decreases, the susceptibility to terminal arc-over increases. Non-hermetic capacitors can be affected by internal
stresses due to pressure changes. These effects can be in the form of capacitance changes, dielectric arc-over, and/or low
insulation resistance. Altitude can also affect heat transfer. Heat that is generated in an operation cannot be dissipated
properly, and high RI2 losses and eventual failure can result.
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Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
F3115_C28 • 3/29/2019
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Motor Run Capacitors
C28, Cylindrical Plastic Case, Segmented Film 420 VAC/470 VAC
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For a complete list of our global sales offices, please visit www.kemet.com/sales.
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 is a registered trademark of KEMET Electronics Corporation.
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