Type SF Motor-Run and Power Supply Capacitors
Oil Filled/Impregnated, AC Rated, Metallized Polypropylene Capacitors
Type SF, AC rated metallized polypropylene capacitors provide
starting torque and power factor correction for split phase
motors typically used in refrigeration and air conditioning motor-
run applications. Type SF also may be used to provide noise
suppression, voltage regulation and line current reduction in power
supply applications.
Highlights
Specifications
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Capacitance Range
Capacitance Tolerance
Rated Voltage
Operating Temperature Range
Dissipation Factor
Service Life Objective
- Self healing
- Fault current protection up to 10,000 amps AFC
- Low energy consumption
- 4 - tine, 1/4” quick connect lug terminals are standard
- Meets EIA Standard EIA-456-A
- UL recognized File Number E71645
- CSA File Number 223507
1 µF to 100 µF
±10% standard, ± 6% and ±3% available
240 Vac to 660 Vac
–40 ºC to 70 ºC standard, 90 ºC available
<0.1%
60,000 h with 94% survival rate
RoHS Compliant
Service Life Objective
The service life objective for this series is 60,000 hours of
operating life with a 94% survival rate when operated at
full voltage, 60 Hz, and rated ambient temperature. AC ca-
pacitors are frequently used at voltages and ambient tem-
peratures other than rated conditions. Service life may be
estimated under specific conditions of temperature and
voltage by using the curves as shown below and to the
right.
Capacitance vs. Temperature
The Capacitance vs. Temperature curve may be used to determine
the capacitance change as a function of temperature. Capacitance
varies by no more than ±3% over the operating temperature range.
Capacitance vs. Temperature
Life vs. Temperature
10000
% of Rated Life
1000
100
10
25
50
75
100
125
–20
0
20
40
60
80
Life vs. Voltage
CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8561 • Fax: (508)996-3830
Type SF Motor-Run and Power Supply Capacitors
Part Numbering System
SF
Series
SF
C
Case
A
= 1 1/4" Oval
B
= 1 1/2 Oval
C
= 1 3/4" Oval
D
= 2.0" Oval
P
= 1 3/4" Round
S
= 2.0" Round
T
= 2 1/2" Round
37
AC Volt
24
= 240 Vac
37
= 370 Vac
44
= 440 Vac
66
= 660 Vac
T
Case Material
T
= Aluminum
w/steel cover
35
Cap
7
= 7.0 µF
35
= 35.0 µF
K
Tol. ±%
L
= ±3%
H
= ±6%
K
= ±10%
291
Can Height
238
= 2.38"
291
= 2.91"
388
= 3.88"
475
= 4.75"
488
= 4.88"
Oil Filled/Impregnated, AC Rated, Metallized Polypropylene Capacitors
B
VAR
A
= 2 way 70ºC
B
= 4 way 70 ºC
C
= 2 way 90 ºC
D
= 4 way 90 ºC
E
= Dual 2,3,4 70 ºC
F
= Forks 70 ºC
G
= Forks 90 ºC
H
= Forks 100 ºC
J
= Forks, 70 ºC Res.
-F
RoHS
Compliant
-F
= Compliant
Options
Capacitors in aluminum cases with mounting studs, are available upon request.
Tighter capacitance tolerances such as ±3% or ±6% are available.
+90 °C ratings are available for HID lighting and power supply applications.
Discharge resistors are available.
Special terminal lugs such as 2 tines plus 1 fork lug are available.
Dual capacitance values are available for 370 Vac and 440 Vac applications.
K
= Forks, 90 ºC Res.
L
= Forks 100 ºC Res.
Z
= Other
CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8561 • Fax: (508)996-3830
Type SF Motor-Run and Power Supply Capacitors
Oval Ratings
Oval Case Style*
.81" ± .06"
Oil Filled/Impregnated, AC Rated, Metallized Polypropylene Capacitors
Cap.
(µF)
4.0
A ± .06"
Case Aluminum Catalog
Code
A
A
A
A
A
A
A
C
C
C
C
C
C
C
C
A
A
A
A
A
A
A
A
A
A
A
A
A
A
C
C
A
C
C
C
C
C
C
A
A
Part Number
240V
SFA24T4K219B-F
SFA24T5K219B-F
SFA24T6K219B-F
SFA24T7.5K219B-F
D ± .06"
SFA24T10K219B-F
.81" ± .06"
H
Cap.
(µF)
3.0
3.0
4.0
4.0
5.0
7.5
10.0
12.5
12.5
15.0
15.0
17.5
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
1.0
1.0
2.0
2.0
3.0
4.0
5.0
6.0
8.0
8.0
10.0
10.0
12.0
15.0
18.0
20.0
25.0
30.0
35.0
40.0
Case Aluminum Catalog
Code
A
A
A
A
A
A
A
A
A
C
A
C
C
C
C
C
D
D
D
D
D
D
A
A
A
A
A
A
A
A
A
C
A
C
C
C
C
D
D
D
D
D
Part Number
440V
SFA44T3K219B-F
SFA44T3K156B-F
SFA44T4K219B-F
SFA44T4K156B-F
SFA44T5K219B-F
SFA44T6K288B-F
SFA44T7.5K288B-F
SFA44T10K388B-F
SFA44T12.5K388B-F
SFC44T12.5K291B-F
SFA44T15K388B-F
SFC44T15K291B-F
SFC44T17.5K291B-F
SFC44T20K391B-F
SFC44T25K391B-F
SFC44T30K391B-F
SFD44T35K391B-F
SFD44T40K391B-F
SFD44T45K391B-F
SFD44T50K391B-F
SFD44T55K391B-F
SFD44T60K391B-F
660V
SFA66T1K156B-F
SFA66T1K219B-F
SFA66T2K156B-F
SFA66T2K219B-F
SFA66T3K288B-F
SFA66T4K288B-F
SFA66T5K388B-F
SFA66T6K388B-F
SFA66T8K475B-F
SFC66T8K291B-F
SFA66T10K475B-F
SFC66T10K291B-F
SFC66T12K391B-F
SFC66T15K391B-F
SFC66T18K391B-F
SFD66T20K391B-F
SFD66T25K391B-F
SFD66T30K391B-F
SFD66T35K475B-F
SFD66T40K475B-F
H
(in)
2.19
1.56
2.19
1.56
2.19
2.88
2.88
3.88
3.88
2.91
3.88
2.91
2.91
3.91
3.91
3.91
3.91
3.91
3.91
3.91
3.91
3.91
1.56
2.19
1.56
2.19
2.88
2.88
3.88
3.88
4.75
2.91
4.75
2.91
3.91
3.91
3.91
3.91
3.91
3.91
4.75
4.75
(in)
2.19
2.19
2.19
2.19
2.19
2.88
2.91
2.91
2.91
2.91
2.91
3.91
3.91
2.19
1.56
2.19
1.56
2.19
1.56
2.19
1.56
2.19
1.56
2.19
2.88
2.88
2.88
2.91
2.91
3.88
2.91
2.91
2.91
3.91
3.91
3.91
2.19
1.56
H +.12"
2.91
-.06"
5.0
6.0
7.5
B ± .06"
.50" Max.
10.0
15.0
20.0
25.0
H +.12"
-.06"
SFA24T15K288B-F
SFA24T20K288B-F
SFC24T25K291B-F
SFC24T30K291B-F
SFC24T35K291B-F
SFC24T40K291B-F
SFC24T45K291B-F
SFC24T50K291B-F
SFC24T60K391B-F
SFC24T70K391B-F
370V
SFA37T2K219B-F
SFA37T2K156B-F
SFA37T3K219B-F
SFA37T3K156B-F
SFA37T4K219B-F
SFA37T4K156B-F
SFA37T5K219B-F
SFA37T5K156B-F
SFA37T6K219B-F
SFA37T6K156B-F
SFA37T7.5K219B-F
SFA37T10K288B-F
SFA37T12.5K288B-F
SFA37T15K288B-F
SFC37T17.5K291B-F
SFC37T20K291B-F
SFA37T20K388B-F
SFC37T25K291B-F
SFC37T30K291B-F
SFC37T35K291B-F
SFC37T40K391B-F
SFC37T45K391B-F
SFC37T50K391B-F
440V
SFA44T2K219B-F
SFA44T2K156B-F
.50"
2.88
Max.
6.0
30.0
35.0
40.0
45.0
50.0
Case Code
A
B
C
D
A
1.31
1.56
1.91
1.97
Dimensions (Inches)
B
H
2.16
2.69
See Ratings Table
2.91
3.66
60.0
70.0
2.0
2.0
3.0
3.0
4.0
4.0
5.0
5.0
6.0
6.0
7.5
10.0
12.5
15.0
17.5
20.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
2.0
2.0
Construction Details
Case Material
Encapsulation
Terminal Material
Aluminum
Enviromentally Safe
Dielectric Fluid
Tin Plated Steel
*Note: The capacitor’s safety pressure
interrupter is designed to disconnect the
capacitor element as the cover expands
upward due to gas pressure build up.
Catastrophic failure may result if movement of
the cover and or terminals are restricted. Rigid
bus bars are not recommended as they may
restrict movement of the cover or terminals.
Customers are advised to provide at least
0.5” clearance above the cover to allow for its
expansion.
CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8561 • Fax: (508)996-3830
Type SF Motor-Run and Power Supply Capacitors
Round Ratings
Round Case Style
.81" ± .06"
Oil Filled/Impregnated, AC Rated, Metallized Polypropylene Capacitors
Cap.
(µF)
2.0
3.0
4.0
5.0
6.0
7.5
D ± .06"
.50" Max.
Case Aluminum Catalog
Code
P
P
P
P
P
P
P
P
P
P
P
P
P
S
S
S
S
S
T
T
T
T
T
T
T
P
P
P
Part Number
370V
SFP37T2K238B-F
SFP37T3K238B-F
SFP37T4K238B-F
SFP37T5K238B-F
SFP37T6K238B-F
SFP37T7.5K238B-F
SFP37T10K238B-F
SFP37T12.5K238B-F
SFP37T15K238B-F
SFP37T17.5K238B-F
SFP37T20K238B-F
SFP37T25K284B-F
SFP37T30K284B-F
SFS37T35K291B-F
SFS37T40K291B-F
SFS37T45K384B-F
SFS37T50K384B-F
SFS37T55K384B-F
SFT37T60K291B-F
SFT37T65K291B-F
SFT37T70K291B-F
SFT37T75K391B-F
SFT37T80K391B-F
SFT37T90K475B-F
SFT37T100K475B-F
440V
SFP44T2K238B-F
SFP44T3K238B-F
SFP44T4K238B-F
H
(in)
2.38
2.38
2.38
2.38
2.38
2.38
2.38
2.38
2.38
2.38
2.38
2.84
2.84
2.91
2.91
3.84
3.84
3.84
2.91
2.91
2.91
3.91
3.91
4.75
4.75
2.38
2.38
2.38
Cap.
(µF)
5.0
6.0
7.5
10.0
12.5
15.0
17.5
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
2.0
3.0
5.0
7.5
10.0
12.5
15.0
17.5
20.0
25.0
30.0
35.0
40.0
Case Aluminum Catalog
Code
P
P
P
P
P
P
P
P
S
S
T
T
T
T
T
T
P
P
P
P
P
S
S
T
T
T
T
T
T
Part Number
440V
SFP44T5K238B-F
SFP44T6K238B-F
SFP44T7.5K238B-F
SFP44T10K238B-F
SFP44T12.5K238B-F
SFP44T15K284B-F
SFP44T17.5K284B-F
SFP44T20K284B-F
SFS44T25K291B-F
SFS44T30K291B-F
SFT44T35K291B-F
SFT44T40K391B-F
SFT44T45K391B-F
SFT44T50K391B-F
SFT44T55K391B-F
SFT44T60K475B-F
660V
SFP66T2K238B-F
SFP66T3K238B-F
SFP66T5K238B-F
SFP66T7.5K284B-F
SFP66T10K284B-F
SFS66T12.5K291B-F
SFS66T15K384B-F
SFT66T17.5K391B-F
SFT66T20K391B-F
SFT66T25K475B-F
SFT66T30K475B-F
SFT66T35K475B-F
SFT66T40K475B-F
H
(in)
2.38
2.38
2.38
2.38
2.38
2.84
2.84
2.84
2.91
2.91
2.91
3.91
3.91
3.91
3.91
4.75
2.38
2.38
2.38
2.84
2.84
2.91
3.84
3.91
3.91
4.75
4.75
4.75
4.75
10.0
12.5
15.0
17.5
H +.12"
-.06"
20.0
25.0
30.0
35.0
40.0
45.0
Case
Code
P
S
T
D
(Inches)
1.87
2.12
2.62
H
See Ratings Table
50.0
55.0
60.0
65.0
70.0
75.0
80.0
90.0
100.0
2.0
3.0
4.0
Construction Details
Case Material
Encapsulation
Terminal Material
Aluminum
Enviromentally Safe
Dielectric Fluid
Tin Plated Steel
Note: The capacitor’s safety pressure
interrupter is designed to disconnect
the capacitor element as the cover
expands upward due to gas pressure
build up. Catastrophic failure may result if
movement of the cover and or terminals
are restricted. Rigid bus bars are not
recommended as they may restrict
movement of the cover or terminals.
Customers are advised to provide at least
0.5” clearance above the cover to allow for
its expansion.
Notice and Disclaimer:
All product drawings, descriptions, specifications, statements, information and
data (collectively, the “Information”) in this datasheet or other publication are subject to change. The
customer is responsible for checking, confirming and verifying the extent to which the Information con-
tained in this datasheet or other 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 any guaran-
tee, warranty, representation or responsibility of any kind, expressed or implied. Statements of suitability
for certain applications are based on the knowledge that the Cornell Dubilier company providing such
statements (“Cornell Dubilier”) has of operating conditions that such Cornell Dubilier company regards
as typical for such applications, but are not intended to constitute any guarantee, warranty or representa-
tion regarding any such matter – and Cornell Dubilier specifically and expressly disclaims any guarantee,
warranty or representation concerning the suitability for a specific customer application, use, storage,
transportation, or operating environment. 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 Cornell Dubilier with reference
to the use of any Cornell Dubilier products is given gratis (unless otherwise specified by Cornell Dubilier),
and Cornell Dubilier assumes no obligation or liability for the advice given or results obtained. Although
Cornell Dubilier strives to apply the most stringent quality and safety standards regarding the design
and manufacturing of its products, in light of 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
or other appropriate protective measures) 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 indi-
cated in such warnings, cautions and notes, or that other safety measures may not be required.
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