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SF Series Motor Start Capacitors & Motor Run Capacitors

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Capacitance	Voltage Rating AC	Termination Style	Life	Length	Width	Depth	Lead Spacing	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
Motor Start Capacitors & Motor Run Capacitors 3uF 660V SFA66T3K288B-F Knowles / Illinois Capacitor 1: $23.39 46In Stock	Mfr. Part No. SFA66T3K288B-F Mouser Part No 598-SFA66T3K288B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 3uF 660V	Datasheet	46In Stock	$23.39 $17.54 $14.85 $14.13 View $13.04 $12.51 Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	3 uF	660 VAC	Quick Connect	60000 Hour	73.15 mm	54.86 mm	33.27 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 4uF 660V SFA66T4K288B-F Knowles / Illinois Capacitor 1: $20.77 38In Stock	Mfr. Part No. SFA66T4K288B-F Mouser Part No 598-SFA66T4K288B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 4uF 660V	Datasheet	38In Stock	$20.77 $17.47 $12.47 $11.80 $10.68	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	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 5uF 660V SFA66T5K388B-F Knowles / Illinois Capacitor 1: $33.63 9In Stock 63Expected 2027/03/02	Mfr. Part No. SFA66T5K388B-F Mouser Part No 598-SFA66T5K388B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 5uF 660V	Datasheet	9In Stock 63Expected 2027/03/02	$33.63 $31.11 $24.02	Min.: 1 Mult.: 1	Motor Run Capacitors	5 uF	660 VAC	Quick Connect	60000 Hour	98.55 mm	54.86 mm	33.27 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 25uF 370V SFC37T25K291B-F Knowles / Illinois Capacitor 1: $26.97 56In Stock	Mfr. Part No. SFC37T25K291B-F Mouser Part No 598-SFC37T25K291B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 25uF 370V	Datasheet	56In Stock	$26.97 $24.27 $23.85 $22.02 View $20.47 Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	25 uF	370 VAC	Quick Connect	60000 Hour	73.91 mm	73.91 mm	48.51 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 40uF 370V SFC37T40K391B-F Knowles / Illinois Capacitor 1: $44.72 4In Stock	Mfr. Part No. SFC37T40K391B-F Mouser Part No 598-SFC37T40K391B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 40uF 370V	Datasheet	4In Stock	$44.72 $32.96 $30.11 $29.30 View Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	40 uF	370 VAC	Quick Connect	60000 Hour	99.31 mm	73.91 mm	48.51 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 12uF 660V SFC66T12K391B-F Knowles / Illinois Capacitor 1: $49.80 33In Stock	Mfr. Part No. SFC66T12K391B-F Mouser Part No 598-SFC66T12K391B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 12uF 660V	Datasheet	33In Stock	$49.80 $39.44 $33.11 $32.54 Quote Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	12 uF	660 VAC	Quick Connect	60000 Hour	99.31 mm	73.91 mm	48.51 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 15uF 660V SFC66T15K391B-F Knowles / Illinois Capacitor 1: $50.70 10In Stock	Mfr. Part No. SFC66T15K391B-F Mouser Part No 598-SFC66T15K391B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 15uF 660V	Datasheet	10In Stock	$50.70 $39.58 $35.01 $33.56	Min.: 1 Mult.: 1	Motor Run Capacitors	15 uF	660 VAC	Quick Connect	60000 Hour	99.31 mm	73.91 mm	48.51 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 18uF 660V SFC66T18K391B-F Knowles / Illinois Capacitor 1: $51.66 20In Stock	Mfr. Part No. SFC66T18K391B-F Mouser Part No 598-SFC66T18K391B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 18uF 660V	Datasheet	20In Stock	$51.66 $37.00 $35.37 $34.02 View Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	18 uF	660 VAC	Quick Connect	60000 Hour	99.31 mm	73.91 mm	48.51 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 50uF 370V SFS37T50K384B-F Knowles / Illinois Capacitor 1: $46.05 4In Stock 84Expected 2027/03/15	Mfr. Part No. SFS37T50K384B-F Mouser Part No 598-SFS37T50K384B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 50uF 370V	Datasheet	4In Stock 84Expected 2027/03/15	$46.05 $34.54 $34.53 $32.58 Quote Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	50 uF	370 VAC	Quick Connect	60000 Hour	97.54 mm	53.85 mm	53.85 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 35uF 440V SFT44T35K291B-F Knowles / Illinois Capacitor 1: $48.30 14In Stock	Mfr. Part No. SFT44T35K291B-F Mouser Part No 598-SFT44T35K291B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 35uF 440V	Datasheet	14In Stock	$48.30 $38.66 $37.61 $33.65	Min.: 1 Mult.: 1	Motor Run Capacitors	35 uF	440 VAC	Quick Connect	60000 Hour	73.91 mm	66.55 mm	66.55 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 5uF 370V SFP37T5K238B-F Knowles / Illinois Capacitor 1: $21.71 46In Stock	Mfr. Part No. SFP37T5K238B-F Mouser Part No 598-SFP37T5K238B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 5uF 370V	Datasheet	46In Stock	$21.71 $16.61 $13.40 $12.76 View $12.58 Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	5 uF	370 VAC	Quick Connect	60000 Hour	60.45 mm	47.5 mm	47.5 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 10uF 370V SFA37T10K288B-F Knowles / Illinois Capacitor 1: $24.83 195On Order	Mfr. Part No. SFA37T10K288B-F Mouser Part No 598-SFA37T10K288B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 10uF 370V	Datasheet	195On Order On Order Ship Dates Mfr. No: SFA37T10K288B-F Stock: 0 On Order: 42 Expected 2026/11/30 90 Expected 2026/12/14 63 Expected 2027/03/15 Factory Lead Time: 20 Weeks	$24.83 $18.83 $16.72 $15.90 $14.47	Min.: 1 Mult.: 1	Motor Run Capacitors	10 uF	370 VAC	Quick Connect	60000 Hour	73.15 mm	54.86 mm	33.27 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 10uF 660V SFA66T10K475B-F Knowles / Illinois Capacitor 1: $38.59 62Expected 2026/11/16	Mfr. Part No. SFA66T10K475B-F Mouser Part No 598-SFA66T10K475B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 10uF 660V	Datasheet	62Expected 2026/11/16	$38.59 $28.26 $25.74 $24.66 View $23.78 Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	10 uF	660 VAC	Quick Connect	60000 Hour	120.65 mm	54.86 mm	33.27 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 6uF 660V SFA66T6K388B-F Knowles / Illinois Capacitor 1: $23.34 125On Order	Mfr. Part No. SFA66T6K388B-F Mouser Part No 598-SFA66T6K388B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 6uF 660V	Datasheet	125On Order On Order Ship Dates Mfr. No: SFA66T6K388B-F Stock: 0 On Order: 62 Expected 2027/03/22 63 Expected 2027/03/29 Factory Lead Time: 20 Weeks	$23.34 $18.28 $16.35 $14.40 View $13.37 $13.23 Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	6 uF	660 VAC	Quick Connect	60000 Hour	98.55 mm	54.86 mm	33.27 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 20uF 370V SFC37T20K291B-F Knowles / Illinois Capacitor 1: $33.16 77Expected 2027/03/08	Mfr. Part No. SFC37T20K291B-F Mouser Part No 598-SFC37T20K291B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 20uF 370V	Datasheet	77Expected 2027/03/08	$33.16 $25.35 $22.14 $21.13 $19.40	Min.: 1 Mult.: 1	Motor Run Capacitors	20 uF	370 VAC	Quick Connect	60000 Hour	73.91 mm	73.91 mm	48.51 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 10uF 660V SFC66T10K291B-F Knowles / Illinois Capacitor 1: $40.43 64Expected 2027/03/29	Mfr. Part No. SFC66T10K291B-F Mouser Part No 598-SFC66T10K291B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 10uF 660V	Datasheet	64Expected 2027/03/29	$40.43 $29.88 $26.47 $25.38 View $23.97 Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	10 uF	660 VAC	Quick Connect	60000 Hour	73.91 mm	73.91 mm	48.51 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 40uF 660V SFD66T40K475B-F Knowles / Illinois Capacitor 1: $88.40 23Expected 2026/11/02	Mfr. Part No. SFD66T40K475B-F Mouser Part No 598-SFD66T40K475B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 40uF 660V	Datasheet	23Expected 2026/11/02	$88.40 $69.57 $67.09 $65.86	Min.: 1 Mult.: 1	Motor Run Capacitors	40 uF	660 VAC	Quick Connect	60000 Hour	120.65 mm	92.96 mm	50.04 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 55uF 5% 660V SFT66C55J572J-F Knowles / Illinois Capacitor 1: $52.95 45Expected 2026/11/16	Mfr. Part No. SFT66C55J572J-F Mouser Part No 598-SFT66C55J572J-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 55uF 5% 660V	Datasheet	45Expected 2026/11/16	$52.95 $38.88 View $38.87 Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	55 uF	660 VAC	Quick Connect	60000 Hour	145.288 mm	66.55 mm	66.55 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 2uF 370V SFA37T2K219B-F Knowles / Illinois Capacitor 1: $19.26 13Expected 2027/03/22	Mfr. Part No. SFA37T2K219B-F Mouser Part No 598-SFA37T2K219B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 2uF 370V	Datasheet	13Expected 2027/03/22	$19.26 $14.75 $11.90 $11.13 $10.04	Min.: 1 Mult.: 1	Motor Run Capacitors	2 uF	370 VAC	Quick Connect	60000 Hour	55.63 mm	54.86 mm	33.27 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 4uF 370V SFA37T4K219B-F Knowles / Illinois Capacitor 1: $20.00 15Expected 2026/11/02	Mfr. Part No. SFA37T4K219B-F Mouser Part No 598-SFA37T4K219B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 4uF 370V	Datasheet	15Expected 2026/11/02	$20.00 $13.84 $12.62 $11.98 $11.03	Min.: 1 Mult.: 1	Motor Run Capacitors	4 uF	370 VAC	Quick Connect	60000 Hour	55.63 mm	54.86 mm	33.27 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 370V 5uF SFA37T5K219B-F Knowles / Illinois Capacitor 1: $20.00 58Expected 2026/12/07	Mfr. Part No. SFA37T5K219B-F Mouser Part No 598-SFA37T5K219B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 370V 5uF	Datasheet	58Expected 2026/12/07	$20.00 $13.84 $12.62 $11.98 $11.03	Min.: 1 Mult.: 1	Motor Run Capacitors	5 uF	370 VAC	Quick Connect	60000 Hour	55.63 mm	54.86 mm	33.27 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 4uF 440V SFA44T4K219B-F Knowles / Illinois Capacitor 1: $19.67 52Expected 2027/03/03	Mfr. Part No. SFA44T4K219B-F Mouser Part No 598-SFA44T4K219B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 4uF 440V	Datasheet	52Expected 2027/03/03	$19.67 $14.76 $12.42 $11.79 View $10.83 $10.46 Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	4 uF	440 VAC	Quick Connect	60000 Hour	55.63 mm	54.86 mm	33.27 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 8uF 660V SFA66T8K475B-F Knowles / Illinois Capacitor 1: $35.84 19Expected 2026/10/30	Mfr. Part No. SFA66T8K475B-F Mouser Part No 598-SFA66T8K475B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 8uF 660V	Datasheet	19Expected 2026/10/30	$35.84 $26.59 $24.33 $23.25 View $22.03 Quote	Min.: 1 Mult.: 1	Motor Run Capacitors	8 uF	660 VAC	Quick Connect	60000 Hour	120.65 mm	54.86 mm	33.27 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 30uF 370V SFC37T30K291B-F Knowles / Illinois Capacitor 1: $23.18 40Expected 2026/12/07	Mfr. Part No. SFC37T30K291B-F Mouser Part No 598-SFC37T30K291B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 30uF 370V	Datasheet	40Expected 2026/12/07	$23.18 $17.31 $14.89 $14.12 $14.01	Min.: 1 Mult.: 1	Motor Run Capacitors	30 uF	370 VAC	Quick Connect	60000 Hour	73.91 mm	73.91 mm	48.51 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk
Motor Start Capacitors & Motor Run Capacitors 50uF 440V SFD44T50K391B-F Knowles / Illinois Capacitor 1: $80.56 18Expected 2027/02/22	Mfr. Part No. SFD44T50K391B-F Mouser Part No 598-SFD44T50K391B-F	Knowles / Illinois Capacitor	Motor Start Capacitors & Motor Run Capacitors 50uF 440V	Datasheet	18Expected 2027/02/22	$80.56 $60.79 $56.65 $53.92	Min.: 1 Mult.: 1	Motor Run Capacitors	50 uF	440 VAC	Quick Connect	60000 Hour	99.31 mm	92.96 mm	50.04 mm	20.57 mm	- 40 C	+ 70 C	SF	Bulk