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SF Series Motor Start Capacitors & Motor Run Capacitors

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Part #

Motor Start Capacitors & Motor Run Capacitors 4uF 660V

SFA66T4K288B-F
Knowles / Illinois Capacitor
1: $28.12
11On Order

Mfr. Part No.
SFA66T4K288B-F

Mouser Part No
598-SFA66T4K288B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 4uF 660V

Datasheet

11On Order

$28.12

$21.92

$18.11

$17.38

Min.: 1
Mult.: 1

Motor Run Capacitors

4 uF

660 VAC

Quick Connect

60000 Hour

73.15 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 40uF 10% 660V 4.75 2 1/2 Round

SFT66T40K475B-F
Knowles / Illinois Capacitor
1: $33.65
50Expected 16/02/2026
Factory Special Order

Mfr. Part No.
SFT66T40K475B-F

Mouser Part No
598-SFT66T40K475B-F

Factory Special Order

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 40uF 10% 660V 4.75 2 1/2 Round

Datasheet

50Expected 16/02/2026

$33.65

$27.59

$25.15

View

Min.: 1
Mult.: 1

Motor Run Capacitors

40 uF

660 VAC

Quick Connect

60000 Hour

120.65 mm

66.55 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 65uF 370V

SFT37T65K291B-F
Knowles / Illinois Capacitor
25: $44.39
900Stock Available

Mfr. Part No.
SFT37T65K291B-F

Mouser Part No
598-SFT37T65K291B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 65uF 370V

Datasheet

900Stock Available

More Info Available

$44.39

$42.29

$41.26

Min.: 25
Mult.: 25

Motor Run Capacitors

65 uF

370 VAC

Quick Connect

60000 Hour

73.91 mm

66.55 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 12.5uF 370V

SFA37T12.5K288B-F
Knowles / Illinois Capacitor
1: $30.35
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA37T12.5K288B-F

Mouser Part No
598-SFA37T12.5K288BF

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 12.5uF 370V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$30.35

$24.72

$22.48

$21.78

Min.: 1
Mult.: 1

Motor Run Capacitors

12.5 uF

370 VAC

Quick Connect

60000 Hour

73.15 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 20uF 370V

SFA37T20K388B-F
Knowles / Illinois Capacitor
63: $18.11
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA37T20K388B-F

Mouser Part No
598-SFA37T20K388B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 20uF 370V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$18.11

$18.10

Min.: 63
Mult.: 63

Motor Run Capacitors

20 uF

370 VAC

Quick Connect

60000 Hour

98.55 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 2uF 370V

SFA37T2K156B-F
Knowles / Illinois Capacitor
126: $6.35
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA37T2K156B-F

Mouser Part No
598-SFA37T2K156B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 2uF 370V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$6.35

$6.34

Quote

Min.: 126
Mult.: 126

Motor Run Capacitors

2 uF

370 VAC

Quick Connect

60000 Hour

39.62 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 3uF 370V

SFA37T3K156B-F
Knowles / Illinois Capacitor
126: $6.46
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA37T3K156B-F

Mouser Part No
598-SFA37T3K156B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 3uF 370V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$6.46

$6.45

Quote

Min.: 126
Mult.: 126

Motor Run Capacitors

3 uF

370 VAC

Quick Connect

60000 Hour

39.62 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 6uF 370V

SFA37T6K156B-F
Knowles / Illinois Capacitor
126: $8.21
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA37T6K156B-F

Mouser Part No
598-SFA37T6K156B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 6uF 370V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$8.21

$8.20

Quote

Min.: 126
Mult.: 126

Motor Run Capacitors

6 uF

370 VAC

Quick Connect

60000 Hour

39.62 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 12.5uF 440V

SFA44T12.5K388B-F
Knowles / Illinois Capacitor
63: $17.58
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA44T12.5K388B-F

Mouser Part No
598-SFA44T12.5K388BF

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 12.5uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$17.58

$17.57

Min.: 63
Mult.: 63

Motor Run Capacitors

12.5 uF

440 VAC

Quick Connect

60000 Hour

98.55 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 15uF 440V

SFA44T15K388B-F
Knowles / Illinois Capacitor
63: $18.13
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA44T15K388B-F

Mouser Part No
598-SFA44T15K388B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 15uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$18.13

$18.12

Min.: 63
Mult.: 63

Motor Run Capacitors

15 uF

440 VAC

Quick Connect

60000 Hour

98.55 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 2uF 440V

SFA44T2K156B-F
Knowles / Illinois Capacitor
126: $6.35
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA44T2K156B-F

Mouser Part No
598-SFA44T2K156B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 2uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$6.35

$6.34

Quote

Min.: 126
Mult.: 126

Motor Run Capacitors

2 uF

440 VAC

Quick Connect

60000 Hour

39.62 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 3uF 440V

SFA44T3K156B-F
Knowles / Illinois Capacitor
126: $6.46
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA44T3K156B-F

Mouser Part No
598-SFA44T3K156B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 3uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$6.46

$6.45

Quote

Min.: 126
Mult.: 126

Motor Run Capacitors

3 uF

440 VAC

Quick Connect

60000 Hour

39.62 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 3uF 440V

SFA44T3K219B-F
Knowles / Illinois Capacitor
1: $13.87
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA44T3K219B-F

Mouser Part No
598-SFA44T3K219B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 3uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$13.87

$11.23

$9.48

$9.47

View

Min.: 1
Mult.: 1

Motor Run Capacitors

3 uF

440 VAC

Quick Connect

60000 Hour

55.63 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 4uF 440V

SFA44T4K156B-F
Knowles / Illinois Capacitor
126: $6.50
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA44T4K156B-F

Mouser Part No
598-SFA44T4K156B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 4uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$6.50

$6.49

Quote

Min.: 126
Mult.: 126

Motor Run Capacitors

4 uF

440 VAC

Quick Connect

60000 Hour

39.62 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 6uF 440V

SFA44T6K288B-F
Knowles / Illinois Capacitor
63: $13.35
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA44T6K288B-F

Mouser Part No
598-SFA44T6K288B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 6uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$13.35

$13.34

Quote

Min.: 63
Mult.: 63

Motor Run Capacitors

6 uF

440 VAC

Quick Connect

60000 Hour

73.15 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 7.5uF 440V

SFA44T7.5K288B-F
Knowles / Illinois Capacitor
1: $19.57
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFA44T7.5K288B-F

Mouser Part No
598-SFA44T7.5K288B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 7.5uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$19.57

$15.54

$13.75

$13.27

$12.57

Min.: 1
Mult.: 1

Motor Run Capacitors

7.5 uF

440 VAC

Quick Connect

60000 Hour

73.15 mm

54.86 mm

33.27 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 17.5uF 370V

SFC37T17.5K291B-F
Knowles / Illinois Capacitor
64: $19.19
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFC37T17.5K291B-F

Mouser Part No
598-SFC37T17.5K291BF

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 17.5uF 370V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$19.19

$19.18

Min.: 64
Mult.: 64

Motor Run Capacitors

17.5 uF

370 VAC

Quick Connect

60000 Hour

73.91 mm

48.51 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 45uF 370V

SFC37T45K391B-F
Knowles / Illinois Capacitor
32: $38.61
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFC37T45K391B-F

Mouser Part No
598-SFC37T45K391B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 45uF 370V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$38.61

$38.60

Min.: 32
Mult.: 32

Motor Run Capacitors

45 uF

370 VAC

Quick Connect

60000 Hour

99.31 mm

73.91 mm

48.51 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 50uF 370V

SFC37T50K391B-F
Knowles / Illinois Capacitor
32: $39.85
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFC37T50K391B-F

Mouser Part No
598-SFC37T50K391B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 50uF 370V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$39.85

$39.84

Min.: 32
Mult.: 32

Motor Run Capacitors

50 uF

370 VAC

Quick Connect

60000 Hour

99.31 mm

73.91 mm

48.51 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 12.5uF 440V

SFC44T12.5K291B-F
Knowles / Illinois Capacitor
64: $19.04
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFC44T12.5K291B-F

Mouser Part No
598-SFC44T12.5K291BF

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 12.5uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$19.04

$19.03

Min.: 64
Mult.: 64

Motor Run Capacitors

12.5 uF

440 VAC

Quick Connect

60000 Hour

73.91 mm

48.51 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 15uF 440V

SFC44T15K291B-F
Knowles / Illinois Capacitor
64: $19.72
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFC44T15K291B-F

Mouser Part No
598-SFC44T15K291B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 15uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$19.72

$19.71

Min.: 64
Mult.: 64

Motor Run Capacitors

15 uF

440 VAC

Quick Connect

60000 Hour

73.91 mm

48.51 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 17.5uF 440V

SFC44T17.5K291B-F
Knowles / Illinois Capacitor
64: $20.27
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFC44T17.5K291B-F

Mouser Part No
598-SFC44T17.5K291BF

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 17.5uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$20.27

$20.26

Min.: 64
Mult.: 64

Motor Run Capacitors

17.5 uF

440 VAC

Quick Connect

60000 Hour

73.91 mm

48.51 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 20uF 440V

SFC44T20K391B-F
Knowles / Illinois Capacitor
32: $29.33
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFC44T20K391B-F

Mouser Part No
598-SFC44T20K391B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 20uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$29.33

$29.32

Quote

Min.: 32
Mult.: 32

Motor Run Capacitors

20 uF

440 VAC

Quick Connect

60000 Hour

99.31 mm

73.91 mm

48.51 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 25uF 440V

SFC44T25K391B-F
Knowles / Illinois Capacitor
32: $33.14
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFC44T25K391B-F

Mouser Part No
598-SFC44T25K391B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 25uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$33.14

$33.13

Min.: 32
Mult.: 32

Motor Run Capacitors

25 uF

440 VAC

Quick Connect

60000 Hour

99.31 mm

73.91 mm

48.51 mm

20.57 mm

- 40 C

+ 70 C

Bulk

Motor Start Capacitors & Motor Run Capacitors 30uF 440V

SFC44T30K391B-F
Knowles / Illinois Capacitor
32: $37.58
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
SFC44T30K391B-F

Mouser Part No
598-SFC44T30K391B-F

Knowles / Illinois Capacitor

Motor Start Capacitors & Motor Run Capacitors 30uF 440V

Datasheet

Non-Stocked Lead-Time 19 Weeks

$37.58

$37.57

$37.51

View

Min.: 32
Mult.: 32

Motor Run Capacitors

30 uF

440 VAC

Quick Connect

60000 Hour

99.31 mm

73.91 mm

48.51 mm

20.57 mm

- 40 C

+ 70 C

Bulk

SF Series Motor Start Capacitors & Motor Run Capacitors

Customer Service Office

Company

Resources

Support

1 uF
2 uF
3 uF
4 uF
5 uF
6 uF
7.5 uF
8 uF
10 uF
12 uF
12.5 uF
15 uF
17.5 uF
18 uF
20 uF
25 uF
30 uF
35 uF
40 uF
45 uF