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21 mm Supercapacitors

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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.	Capacitance	Voltage Rating DC	Termination Style	Lead Spacing	Diameter	Length	Width	Life	ESR	Tolerance	Orientation	Product	Minimum Operating Temperature	Maximum Operating Temperature	Height	Series	Packaging
Supercapacitors / Ultracapacitors 5.5V .22F -20/80% LS=5.08mm FR0H224ZF KEMET 1: $9.14 3In Stock	Mfr. Part No. FR0H224ZF Mouser Part No 80-FR0H224ZF	KEMET	Supercapacitors / Ultracapacitors 5.5V .22F -20/80% LS=5.08mm Learn More about KEMET fr supercapacitors	Datasheet	3In Stock	$9.14 $6.82 $6.02 $5.39 $4.97	Min.: 1 Mult.: 1	220000 uF	5.5 VDC	Radial		14.5 mm (0.571 in)	21 mm		1000 Hour	180 Ohms	- 20 %, + 80 %	Vertical	EDLC / Supercaps	- 40 C	+ 85 C		FR	Bulk
Supercapacitors / Ultracapacitors 2.5F 6.0V 112123 DSF255Q6R0JBE Knowles / Illinois Capacitor 1: $4.90 1,476In Stock 450Expected 02/11/2026	Mfr. Part No. DSF255Q6R0JBE Mouser Part No 598-DSF255Q6R0JBE	Knowles / Illinois Capacitor	Supercapacitors / Ultracapacitors 2.5F 6.0V 112123 Learn More about Knowles / Illinois Capacitor cde dsf 3v supercapacitors	Datasheet	1,476In Stock 450Expected 02/11/2026	$4.90 $3.46 $2.97 $2.67 View $2.48 $2.40 $2.31 $2.19	Min.: 1 Mult.: 1	2.5 F	6 VDC	Radial			21 mm	11 mm	1500 Hour, 500000 Cycle	160 mOhms	- 10 %, + 30 %	Vertical	EDLC / Supercaps	- 40 C	+ 85 C		DSF	Bulk
Supercapacitors / Ultracapacitors 3.5F 6.0V 112127 DSF355Q6R0JBF Knowles / Illinois Capacitor 1: $5.76 723In Stock	Mfr. Part No. DSF355Q6R0JBF Mouser Part No 598-DSF355Q6R0JBF	Knowles / Illinois Capacitor	Supercapacitors / Ultracapacitors 3.5F 6.0V 112127 Learn More about Knowles / Illinois Capacitor cde dsf 3v supercapacitors	Datasheet	723In Stock	$5.76 $3.73 $3.28 $3.10 View $2.73 $2.64 $2.47 $2.39	Min.: 1 Mult.: 1	3.5 F	6 VDC	Radial			21 mm	11 mm	1500 Hour, 500000 Cycle	130 mOhms	- 10 %, + 30 %	Vertical	EDLC / Supercaps	- 40 C	+ 85 C	28 mm	DSF	Bulk
Supercapacitors / Ultracapacitors 5F 6.0V 112132 DSF505Q6R0JBG Knowles / Illinois Capacitor 1: $7.22 863In Stock	Mfr. Part No. DSF505Q6R0JBG Mouser Part No 598-DSF505Q6R0JBG	Knowles / Illinois Capacitor	Supercapacitors / Ultracapacitors 5F 6.0V 112132 Learn More about Knowles / Illinois Capacitor cde dsf 3v supercapacitors	Datasheet	863In Stock	$7.22 $4.53 $4.22 $4.12 View $3.90 $3.80 $3.68 Quote	Min.: 1 Mult.: 1	5 F	6 VDC	Radial			21 mm	11 mm	1500 Hour, 500000 Cycle	100 mOhms	- 10 %, + 30 %	Vertical	EDLC / Supercaps	- 40 C	+ 85 C	33 mm	DSF	Bulk
Supercapacitors / Ultracapacitors 3.5F 5.5V 30%/-10% Dual Cell DGH355Q5R5 Knowles / Illinois Capacitor 1: $5.63 495In Stock 700Expected 05/11/2026	Mfr. Part No. DGH355Q5R5 Mouser Part No 598-DGH355Q5R5	Knowles / Illinois Capacitor	Supercapacitors / Ultracapacitors 3.5F 5.5V 30%/-10% Dual Cell Learn More about Knowles / Illinois Capacitor cde dgh supercapacitors	Datasheet	495In Stock 700Expected 05/11/2026	$5.63 $4.08 $3.46 $3.26 View $2.94 $2.84 $2.73	Min.: 1 Mult.: 1	3.5 F	5.5 VDC	Radial	15.5 mm (0.61 in)		21 mm	11 mm	1500 Hour, 500000 Cycle	160 mOhms	- 10 %, + 30 %	Vertical	EDLC / Supercaps	- 40 C	+ 65 C	27 mm	DGH	Bulk
Supercapacitors / Ultracapacitors 0.50F, 8.1V, 21x20x6.5mm DGH504M8R1 Knowles / Illinois Capacitor 1: $5.25 457In Stock	Mfr. Part No. DGH504M8R1 Mouser Part No 598-DGH504M8R1	Knowles / Illinois Capacitor	Supercapacitors / Ultracapacitors 0.50F, 8.1V, 21x20x6.5mm Learn More about Knowles / Illinois Capacitor illinois capacitor supercapacitors	Datasheet	457In Stock	$5.25 $3.74 $3.20 $2.89 View $2.53 $2.43 $2.33 $2.30 Quote	Min.: 1 Mult.: 1	500000 uF	8.1 VDC				21 mm	20 mm					EDLC / Supercaps			6.5 mm	DGH	Bulk
Supercapacitors / Ultracapacitors 0.50F, 9V, 21x20x6.5mm DSF504M9R0ZBN Knowles / Illinois Capacitor 1: $5.57 441In Stock	Mfr. Part No. DSF504M9R0ZBN Mouser Part No 598-DSF504M9R0ZBN	Knowles / Illinois Capacitor	Supercapacitors / Ultracapacitors 0.50F, 9V, 21x20x6.5mm Learn More about Knowles / Illinois Capacitor illinois capacitor supercapacitors	Datasheet	441In Stock	$5.57 $3.97 $3.40 $3.07 View $2.85 $2.75 Quote	Min.: 1 Mult.: 1	500000 uF	9 VDC				21 mm	20 mm					EDLC / Supercaps			6.5 mm	DSF	Bulk
Supercapacitors / Ultracapacitors Eaton TV Supercapacitor, 3V, 3.3F, 75 mohm TV0820-3R0335-R Eaton Electronics 1: $2.70 900On Order	Mfr. Part No. TV0820-3R0335-R Mouser Part No 504-TV0820-3R0335-R	Eaton Electronics	Supercapacitors / Ultracapacitors Eaton TV Supercapacitor, 3V, 3.3F, 75 mohm Learn More about Eaton Electronics eaton tv supercapacitors	Datasheet	900On Order	$2.70 $1.86 $1.78 $1.47 View $1.19 $1.13 $1.09	Min.: 1 Mult.: 1	3.3 F	3 VDC	Radial	3.5 mm (0.138 in)	8.5 mm (0.335 in)	21 mm		1000 Hour	75 mOhms	- 10 %, + 30 %	Vertical	EDLC / Supercaps	- 40 C	+ 65 C		TV	Bulk
Supercapacitors / Ultracapacitors 2.5F 5.5V 30%/-10% Dual Cell DGH255Q5R5 Knowles / Illinois Capacitor 1: $3.92 1,650Expected 09/12/2026	Mfr. Part No. DGH255Q5R5 Mouser Part No 598-DGH255Q5R5	Knowles / Illinois Capacitor	Supercapacitors / Ultracapacitors 2.5F 5.5V 30%/-10% Dual Cell Learn More about Knowles / Illinois Capacitor cde dgh supercapacitors	Datasheet	1,650Expected 09/12/2026	$3.92 $2.86 $2.39 $2.38 View $2.13 Quote	Min.: 1 Mult.: 1	2.5 F	5.5 VDC	Radial	15.5 mm (0.61 in)		21 mm	11 mm	1500 Hour, 500000 Cycle	260 mOhms	- 10 %, + 30 %	Vertical	EDLC / Supercaps	- 40 C	+ 65 C	23 mm	DGH	Bulk
Supercapacitors / Ultracapacitors SCPA Supercapacitor 4.20V 220mF 3-153-407 Schurter 1: $15.10 198Expected 20/05/2027 New Product	Mfr. Part No. 3-153-407 Mouser Part No 693-3-153-407 New Product	Schurter	Supercapacitors / Ultracapacitors SCPA Supercapacitor 4.20V 220mF Learn More about Schurter scpx prismatic supercaps	Datasheet	198Expected 20/05/2027	$15.10 $11.72 $10.77 $10.15 $9.24	Min.: 1 Mult.: 1	220000 uF	4.2 V	SMD/SMT			21 mm	14 mm		300 mOhms		Horizontal	Supercapacitors	- 40 C	+ 85 C	2.2 mm	SCPA
Supercapacitors / Ultracapacitors SCPA Supercapacitor 4.20V 470mF 3-153-408 Schurter 1: $13.98 498On Order New Product	Mfr. Part No. 3-153-408 Mouser Part No 693-3-153-408 New Product	Schurter	Supercapacitors / Ultracapacitors SCPA Supercapacitor 4.20V 470mF Learn More about Schurter scpx prismatic supercaps	Datasheet	498On Order On Order Ship Dates Mfr. No: 3-153-408 Stock: 0 On Order: 198 Expected 20/11/2026 300 Expected 03/12/2026 Factory Lead Time: 36 Weeks	$13.98 $10.85 $9.60 $9.24 $8.71	Min.: 1 Mult.: 1	470000 uF	4.2 V	SMD/SMT			21 mm	14 mm		130 mOhms		Horizontal	Supercapacitors	- 40 C	+ 85 C	3.5 mm	SCPA
Supercapacitors / Ultracapacitors SCPA Supercapacitor 5.50V 470mF 3-153-410 Schurter 1: $14.25 825Expected 31/12/2026 New Product	Mfr. Part No. 3-153-410 Mouser Part No 693-3-153-410 New Product	Schurter	Supercapacitors / Ultracapacitors SCPA Supercapacitor 5.50V 470mF Learn More about Schurter scpx prismatic supercaps	Datasheet	825Expected 31/12/2026	$14.25 $11.06 $9.78 $9.38 View $8.71 $8.70	Min.: 1 Mult.: 1	470000 uF	5.5 V	SMD/SMT			21 mm	14 mm		45 mOhms		Horizontal	Supercapacitors	- 40 C	+ 70 C	3.2 mm	SCPA

21 mm Supercapacitors

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