21 mm Supercapacitors

Results: 12
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model 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
KEMET Supercapacitors / Ultracapacitors 5.5V .22F -20/80% LS=5.08mm
Datasheet
303In Stock
Min.: 1
Mult.: 1

220 mF 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
Knowles / Illinois Capacitor Supercapacitors / Ultracapacitors 2.5F 5.5V 30%/-10% Dual Cell
Datasheet
1,641In Stock
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
Knowles / Illinois Capacitor Supercapacitors / Ultracapacitors 3.5F 5.5V 30%/-10% Dual Cell
Datasheet
349In Stock
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
Knowles / Illinois Capacitor Supercapacitors / Ultracapacitors 3.5F 6.0V 11*21*27
Datasheet
433In Stock
300Expected 9/30/2026
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
Knowles / Illinois Capacitor Supercapacitors / Ultracapacitors 5F 6.0V 11*21*32
Datasheet
25In Stock
450Expected 10/26/2026
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
Knowles / Illinois Capacitor Supercapacitors / Ultracapacitors 0.50F, 8.1V, 21x20x6.5mm
Datasheet
457In Stock
Min.: 1
Mult.: 1

500 mF 8.1 VDC 21 mm 20 mm EDLC / Supercaps 6.5 mm DGH Bulk
Knowles / Illinois Capacitor Supercapacitors / Ultracapacitors 0.50F, 9V, 21x20x6.5mm
Datasheet
441In Stock
Min.: 1
Mult.: 1

500 mF 9 VDC 21 mm 20 mm EDLC / Supercaps 6.5 mm DSF Bulk
Schurter Supercapacitors / Ultracapacitors SCPA Supercapacitor 4.20V 220mF
Datasheet
198Expected 9/14/2026
Min.: 1
Mult.: 1

220 mF 4.2 V SMD/SMT 21 mm 14 mm 300 mOhms Horizontal Supercapacitors - 40 C + 85 C 2.2 mm SCPA
Schurter Supercapacitors / Ultracapacitors SCPA Supercapacitor 4.20V 470mF
Datasheet
498Expected 10/15/2026
Min.: 1
Mult.: 1

470 mF 4.2 V SMD/SMT 21 mm 14 mm 130 mOhms Horizontal Supercapacitors - 40 C + 85 C 3.5 mm SCPA
Schurter Supercapacitors / Ultracapacitors SCPA Supercapacitor 5.50V 470mF
Datasheet
800Expected 9/24/2026
Min.: 1
Mult.: 1

470 mF 5.5 V SMD/SMT 21 mm 14 mm 45 mOhms Horizontal Supercapacitors - 40 C + 70 C 3.2 mm SCPA
Eaton Electronics Supercapacitors / Ultracapacitors Eaton TV Supercapacitor, 3V, 3.3F, 75 mohm
Datasheet
900Expected 9/10/2026
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
Knowles / Illinois Capacitor Supercapacitors / Ultracapacitors 2.5F 6.0V 11*21*23
Datasheet
2,133On Order
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