Tantalum Capacitors - Polymer

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T521 High Voltage Polymer Tantalum Capacitors

KEMET T521 KO-CAP^® High Voltage Organic Polymer Tantalum Capacitors feature voltage ratings up to 75V and capacitance values up to 470µF, high ripple current capability, safe failure mode, and low ESR. These T521 capacitors are volumetrically efficient and have stable temperature characteristics. They are lead-free when ordered with 100% Sn termination finish, RoHS compliant, and halogen-free. These components are designed for DC-DC converters, power supply inputs, and higher application voltages such as 12V, 24V, 28V, and 48V input rails. The T521 KO-CAP Series features a Ta anode and Ta₂O₅ dielectric as well as a conductive organic polymer that replaces the traditionally used MnO₂ as the cathode plate of the capacitor. This results in very low ESR and improved capacitance retention at high frequency.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) Filter the results in the table by unit price based on your quantity.	Qty.	Capacitance	Voltage Rating DC	Termination Style	Tolerance	Case Code - in	ESR	Leakage Current	Height	Minimum Operating Temperature	Maximum Operating Temperature	Case Code - mm	Mfr Case Code	Series	Packaging
Tantalum Capacitors - Polymer 35V 22uF 2917 20% ESR=60mOhms T521D226M035ATE060 KEMET 1: $7.64 439In Stock 4,000Expected 23/2/2027	Mfr. Part No. T521D226M035ATE060 Mouser Part No 80-T521D226M035ATE60	KEMET	Tantalum Capacitors - Polymer 35V 22uF 2917 20% ESR=60mOhms Learn More about KEMET t521 caps	Datasheet	439In Stock 4,000Expected 23/2/2027	Cut Tape $7.64 $5.36 $4.61 $4.05 Reel $3.78 MouseReel Available	Min.: 1 Mult.: 1 : 500	22 uF	35 VDC	SMD/SMT	20 %	2917	60 mOhms	77 uA	2.8 mm	- 55 C	+ 125 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 50V 22uF 2917 20% ESR=90mOhms T521D226M050ATE090 KEMET 1: $8.79 487In Stock 6,968On Order	Mfr. Part No. T521D226M050ATE090 Mouser Part No 80-T521D226M50E90	KEMET	Tantalum Capacitors - Polymer 50V 22uF 2917 20% ESR=90mOhms Learn More about KEMET t521 caps	Datasheet	487In Stock 6,968On Order On Order Ship Dates Mfr. No: T521D226M050ATE090 Stock: 487 Can Dispatch Immediately On Order: 3,968 Expected 23/11/2026 3,000 Expected 23/2/2027 Factory Lead Time: 26 Weeks	Cut Tape $8.79 $6.45 $5.52 $5.24 Reel $5.02 MouseReel Available	Min.: 1 Mult.: 1 : 500	22 uF	50 VDC	SMD/SMT	20 %	2917	90 mOhms	110 uA	2.8 mm	- 55 C	+ 125 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 16V 220uF 7343 20% ESR=25mOhms T521D227M016ATE025 KEMET 1: $9.53 27In Stock 1,500Expected 23/2/2027	Mfr. Part No. T521D227M016ATE025 Mouser Part No 80-T521D227M16ATE025	KEMET	Tantalum Capacitors - Polymer 16V 220uF 7343 20% ESR=25mOhms Learn More about KEMET t521 caps	Datasheet	27In Stock 1,500Expected 23/2/2027	Cut Tape $9.53 $7.03 $6.16 $5.54 Reel $5.20 MouseReel Available	Min.: 1 Mult.: 1 : 500	220 uF	16 VDC	SMD/SMT	20 %	2815	25 mOhms	352 uA	2.8 mm	- 55 C	+ 125 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 16V 220uF 7343 20% ESR=50mOhms T521D227M016ATE050 KEMET 1: $9.11 46In Stock 1,500On Order	Mfr. Part No. T521D227M016ATE050 Mouser Part No 80-T521D227M16ATE050	KEMET	Tantalum Capacitors - Polymer 16V 220uF 7343 20% ESR=50mOhms Learn More about KEMET t521 caps	Datasheet	46In Stock 1,500On Order On Order Ship Dates Mfr. No: T521D227M016ATE050 Stock: 46 Can Dispatch Immediately On Order: 1,000 Expected 28/6/2027 500 Expected 20/7/2027 Factory Lead Time: 26 Weeks	Cut Tape $9.11 $6.72 $5.90 $5.34 Reel $4.96 MouseReel Available	Min.: 1 Mult.: 1 : 500	220 uF	16 VDC	SMD/SMT	20 %	2815	50 mOhms	352 uA	2.8 mm	- 55 C	+ 125 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 25V 33uF 2917 20% ESR=40mOhms T521D336M025ATE040 KEMET 1: $4.60 343In Stock 500Expected 11/1/2027	Mfr. Part No. T521D336M025ATE040 Mouser Part No 80-T521D336M25ATE40	KEMET	Tantalum Capacitors - Polymer 25V 33uF 2917 20% ESR=40mOhms Learn More about KEMET t521 caps	Datasheet	343In Stock 500Expected 11/1/2027	Cut Tape $4.60 $4.24 $2.48 Reel $1.82 MouseReel Available	Min.: 1 Mult.: 1 : 500	33 uF	25 VDC	SMD/SMT	20 %	2917	40 mOhms	82.5 uA	2.8 mm	- 55 C	+ 105 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 25V 33uF 2917 20% ESR=60mohms T521D336M025ATE060 KEMET 1: $3.71 308In Stock	Mfr. Part No. T521D336M025ATE060 Mouser Part No 80-T521D336M25ATE60	KEMET	Tantalum Capacitors - Polymer 25V 33uF 2917 20% ESR=60mohms Learn More about KEMET t521 caps	Datasheet	308In Stock	Cut Tape $3.71 $2.69 $2.22 $2.07 Reel $1.81 MouseReel Available	Min.: 1 Mult.: 1 : 500	33 uF	25 VDC	SMD/SMT	20 %	2917	60 mOhms	82.5 uA	2.8 mm	- 55 C	+ 105 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 63V 4.7uF 2917 20% ESR=75mOhms T521D475M063ATE075 KEMET 1: $4.11 281In Stock 6,000On Order	Mfr. Part No. T521D475M063ATE075 Mouser Part No 80-T521D475M63ATE075	KEMET	Tantalum Capacitors - Polymer 63V 4.7uF 2917 20% ESR=75mOhms Learn More about KEMET t521 caps	Datasheet	281In Stock 6,000On Order On Order Ship Dates Mfr. No: T521D475M063ATE075 Stock: 281 Can Dispatch Immediately On Order: 1,000 Expected 4/2/2027 5,000 Expected 23/2/2027 Factory Lead Time: 26 Weeks	Cut Tape $4.11 $2.91 $2.49 $2.28 Reel $1.96 MouseReel Available	Min.: 1 Mult.: 1 : 500	4.7 uF	63 VDC	SMD/SMT	20 %	2917	75 mOhms	29.6 uA	2.8 mm	- 55 C	+ 125 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 25V 47uF 2917 20% ESR=50mOhms T521D476M025ATE065 KEMET 1: $3.58 590In Stock 5,500On Order	Mfr. Part No. T521D476M025ATE065 Mouser Part No 80-T521D476M025ATE65	KEMET	Tantalum Capacitors - Polymer 25V 47uF 2917 20% ESR=50mOhms Learn More about KEMET t521 caps	Datasheet	590In Stock 5,500On Order On Order Ship Dates Mfr. No: T521D476M025ATE065 Stock: 590 Can Dispatch Immediately On Order: 3,500 Expected 24/5/2027 2,000 Expected 26/5/2027 Factory Lead Time: 26 Weeks	Cut Tape $3.58 $2.54 $2.19 $1.93 Reel $1.60 MouseReel Available	Min.: 1 Mult.: 1 : 500	47 uF	25 VDC	SMD/SMT	20 %	2917	65 mOhms	117.5 uA	2.8 mm	- 55 C	+ 105 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 16V 47uF 2917 20% ESR=40mOhms T521D476M016ATE040 KEMET 1: $4.72 24In Stock	Mfr. Part No. T521D476M016ATE040 Mouser Part No 80-T521D476M16ATE40	KEMET	Tantalum Capacitors - Polymer 16V 47uF 2917 20% ESR=40mOhms Learn More about KEMET t521 caps	Datasheet	24In Stock	Cut Tape $4.72 $3.32 $3.09 $2.72 Reel $2.27 MouseReel Available	Min.: 1 Mult.: 1 : 500	47 uF	16 VDC	SMD/SMT	20 %	2917	40 mOhms	75.2 uA	2.8 mm	- 55 C	+ 105 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 20V 47uF 2917 20% ESR=55mOhms T521D476M020ATE055 KEMET 1: $4.75 26In Stock 3,500Expected 14/9/2027	Mfr. Part No. T521D476M020ATE055 Mouser Part No 80-T521D476M20ATE55	KEMET	Tantalum Capacitors - Polymer 20V 47uF 2917 20% ESR=55mOhms Learn More about KEMET t521 caps	Datasheet	26In Stock 3,500Expected 14/9/2027	Cut Tape $4.75 $3.33 $2.76 $2.58 Reel $2.24 MouseReel Available	Min.: 1 Mult.: 1 : 500	47 uF	20 VDC	SMD/SMT	20 %	2917	55 mOhms	94 uA	2.8 mm	- 55 C	+ 125 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 50V 6.8uF 2917 20% ESR=70mOhms T521D685M050ATE070 KEMET 1: $3.94 10In Stock	Mfr. Part No. T521D685M050ATE070 Mouser Part No 80-T521D685M50ATE70	KEMET	Tantalum Capacitors - Polymer 50V 6.8uF 2917 20% ESR=70mOhms Learn More about KEMET t521 caps	Datasheet	10In Stock	Cut Tape $3.94 $2.73 $2.26 $2.11 Reel $1.84 MouseReel Available	Min.: 1 Mult.: 1 : 500	6.8 uF	50 VDC	SMD/SMT	20 %	2917	70 mOhms	34 uA	2.8 mm	- 55 C	+ 125 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 25V 68uF 20% ESR=70mOhms T521D686M025ATE070 KEMET 1: $7.52 131In Stock 1,000On Order	Mfr. Part No. T521D686M025ATE070 Mouser Part No 80-T521D686M025ATE70	KEMET	Tantalum Capacitors - Polymer 25V 68uF 20% ESR=70mOhms Learn More about KEMET t521 caps	Datasheet	131In Stock 1,000On Order On Order Ship Dates Mfr. No: T521D686M025ATE070 Stock: 131 Can Dispatch Immediately On Order: 500 Expected 8/3/2027 500 Expected 21/5/2027 Factory Lead Time: 26 Weeks	Cut Tape $7.52 $5.47 $4.64 $4.39 Reel $3.94 MouseReel Available	Min.: 1 Mult.: 1 : 500	68 uF	25 VDC	SMD/SMT	20 %	2917	70 mOhms	170 uA	2.8 mm	- 55 C	+ 105 C	7343	D Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 16V 33uF 2917 20% ESR=40mOhms T521Q336M016ATE040 KEMET 1: $3.82 500In Stock	Mfr. Part No. T521Q336M016ATE040 Mouser Part No 80-T521Q336M016040	KEMET	Tantalum Capacitors - Polymer 16V 33uF 2917 20% ESR=40mOhms Learn More about KEMET t521 caps	Datasheet	500In Stock	Cut Tape $3.82 $2.72 $2.34 $2.07 $1.84 Reel $1.62 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	33 uF	16 VDC	SMD/SMT	20 %	2917	40 mOhms	52.8 uA	1.1 mm	- 55 C	+ 105 C	7343	Q Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 25V 10uF 1311 20% ESR=100mOhms T521T106M025ATE100 KEMET 1: $3.67 376In Stock 3,000Expected 14/1/2027	Mfr. Part No. T521T106M025ATE100 Mouser Part No 80-T521T106M25ATE100	KEMET	Tantalum Capacitors - Polymer 25V 10uF 1311 20% ESR=100mOhms Learn More about KEMET t521 caps	Datasheet	376In Stock 3,000Expected 14/1/2027	Cut Tape $3.67 $2.57 $2.16 $1.94 View Reel $1.47 $1.69 $1.59 $1.47 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	10 uF	25 VDC	SMD/SMT	20 %	1411	100 mOhms	25 uA	1.1 mm	- 55 C	+ 125 C	3528	T Case	T521 SSD	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 35V 10uF 20% 3528-12 -55 /+105C ESR=100mOhms T521T106M035APE100 KEMET 1: $2.08 9In Stock 15,000Expected 25/3/2027	Mfr. Part No. T521T106M035APE100 Mouser Part No 80-T521T106M35APE100	KEMET	Tantalum Capacitors - Polymer 35V 10uF 20% 3528-12 -55 /+105C ESR=100mOhms Learn More about KEMET t521 caps	Datasheet	9In Stock 15,000Expected 25/3/2027	Cut Tape $2.08 $1.08 $0.997 $0.839 $0.793 Reel $0.704 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	10 uF	35 VDC	SMD/SMT	20 %	1411	100 mOhms	35 uA	1.1 mm	- 55 C	+ 125 C	3528	T Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 35V 6.8uF 1311 20% ESR=90mOhms T521T685M035APE090 KEMET 1: $3.47 943In Stock 9,000On Order	Mfr. Part No. T521T685M035APE090 Mouser Part No 80-T521T685M035APE90	KEMET	Tantalum Capacitors - Polymer 35V 6.8uF 1311 20% ESR=90mOhms Learn More about KEMET t521 caps	Datasheet	943In Stock 9,000On Order On Order Ship Dates Mfr. No: T521T685M035APE090 Stock: 943 Can Dispatch Immediately On Order: 3,000 Expected 13/4/2027 6,000 Expected 20/4/2027 Factory Lead Time: 26 Weeks	Cut Tape $3.47 $2.38 $1.94 $1.81 $1.51 Reel $1.41 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	6.8 uF	35 VDC	SMD/SMT	20 %	1411	90 mOhms	23.8 uA	1.1 mm	- 55 C	+ 125 C	3528	T Case	T521 SSD	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 50V 10uF 2917 20% ESR=90mOhms T521V106M050ATE090 KEMET 1: $8.81 111In Stock 3,000Expected 24/12/2026	Mfr. Part No. T521V106M050ATE090 Mouser Part No 80-T521V106M50ATE90	KEMET	Tantalum Capacitors - Polymer 50V 10uF 2917 20% ESR=90mOhms Learn More about KEMET t521 caps	Datasheet	111In Stock 3,000Expected 24/12/2026	Cut Tape $8.81 $6.50 $5.70 $5.07 $4.81 Reel $4.80 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	10 uF	50 VDC	SMD/SMT	20 %	2917	90 mOhms	50 uA	1.8 mm	- 55 C	+ 125 C	7343	V Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 16V 100uF 2917 20% ESR=50mOhms T521V107M016ATE050 KEMET 1: $3.64 142In Stock 35,000Expected 31/3/2027	Mfr. Part No. T521V107M016ATE050 Mouser Part No 80-T521V107M16ATE50	KEMET	Tantalum Capacitors - Polymer 16V 100uF 2917 20% ESR=50mOhms Learn More about KEMET t521 caps	Datasheet	142In Stock 35,000Expected 31/3/2027	Cut Tape $3.64 $2.56 $2.09 $1.94 $1.70 Reel $1.63 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	100 uF	16 VDC	SMD/SMT	20 %	2917	50 mOhms	160 uA	1.8 mm	- 55 C	+ 125 C	7343	V Case	T521 SSD	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 35V 15uF 2917 20% ESR=100mOhms T521V156M035ATE100 KEMET 1: $3.52 469In Stock 1,000Expected 4/1/2027	Mfr. Part No. T521V156M035ATE100 Mouser Part No 80-T521V156M35ATE100	KEMET	Tantalum Capacitors - Polymer 35V 15uF 2917 20% ESR=100mOhms Learn More about KEMET t521 caps	Datasheet	469In Stock 1,000Expected 4/1/2027	Cut Tape $3.52 $2.42 $1.99 $1.85 $1.63 Reel $1.60 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	15 uF	35 VDC	SMD/SMT	20 %	2917	100 mOhms	52.5 uA	1.8 mm	- 55 C	+ 125 C	7343	V Case	T521 SSD	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 16V 150uF 2912 20% E SR=50mOhms T521V157M016ATE050 KEMET 1: $6.35 75In Stock 4,000On Order	Mfr. Part No. T521V157M016ATE050 Mouser Part No 80-T521V157M16ATE050	KEMET	Tantalum Capacitors - Polymer 16V 150uF 2912 20% E SR=50mOhms Learn More about KEMET t521 caps	Datasheet	75In Stock 4,000On Order On Order Ship Dates Mfr. No: T521V157M016ATE050 Stock: 75 Can Dispatch Immediately On Order: 2,000 Expected 24/12/2026 2,000 Expected 31/12/2026 Factory Lead Time: 26 Weeks	Cut Tape $6.35 $4.58 $3.97 $3.51 $3.33 Reel $3.03 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	150 uF	16 VDC	SMD/SMT	20 %	2917	50 mOhms	240 uA	1.9 mm	- 55 C	+ 105 C	7343	V Case	T521	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 25V 22uF 2917 20% ESR=60mohms T521V226M025ATE060 KEMET 1: $3.84 855In Stock	Mfr. Part No. T521V226M025ATE060 Mouser Part No 80-T521V226M25ATE60	KEMET	Tantalum Capacitors - Polymer 25V 22uF 2917 20% ESR=60mohms Learn More about KEMET t521 caps	Datasheet	855In Stock	Cut Tape $3.84 $2.69 $2.24 $2.04 $1.81 Reel $1.66 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	22 uF	25 VDC	SMD/SMT	20 %	2917	60 mOhms	55 uA	1.8 mm	- 55 C	+ 105 C	7343	V Case	T521 SSD	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 25V 33uF 20% ESR=60mOhms T521V336M025ATE0607280 KEMET 1: $3.73 5,995In Stock	Mfr. Part No. T521V336M025ATE0607280 Mouser Part No 80-T521V336M025ATE60	KEMET	Tantalum Capacitors - Polymer 25V 33uF 20% ESR=60mOhms Learn More about KEMET t521 caps	Datasheet	5,995In Stock	Cut Tape $3.73 $2.65 $2.28 $2.01 View Reel $1.66 $1.78 $1.67 $1.66 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	33 uF	25 VDC	SMD/SMT	20 %	2917	60 mOhms	82.5 uA		- 55 C	+ 105 C	7343	V Case	T521 SSD	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 25V 33uF 2917 20% ESR=25mOhms T521V336M025ATE025 KEMET 1: $3.41 1,130In Stock	Mfr. Part No. T521V336M025ATE025 Mouser Part No 80-T521V336M25E25	KEMET	Tantalum Capacitors - Polymer 25V 33uF 2917 20% ESR=25mOhms Learn More about KEMET t521 caps	Datasheet	1,130In Stock	Cut Tape $3.41 $2.34 $1.92 $1.78 $1.56 Reel $1.48 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	33 uF	25 VDC	SMD/SMT	20 %	2917	25 mOhms	82.5 uA	1.8 mm	- 55 C	+ 105 C	7343	V Case	T521 SSD	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 16V 47uF 2917 20% ESR=40mOhms T521V476M016ATE040 KEMET 1: $3.51 541In Stock	Mfr. Part No. T521V476M016ATE040 Mouser Part No 80-T521V476M16ATE40	KEMET	Tantalum Capacitors - Polymer 16V 47uF 2917 20% ESR=40mOhms Learn More about KEMET t521 caps	Datasheet	541In Stock	Cut Tape $3.51 $2.41 $1.97 $1.84 $1.60 Reel $1.52 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	47 uF	16 VDC	SMD/SMT	20 %	2917	40 mOhms	75.2 uA	1.8 mm	- 55 C	+ 105 C	7343	V Case	T521 SSD	Reel, Cut Tape, MouseReel
Tantalum Capacitors - Polymer 16V 68uF 2917 20% ESR=40mOhms T521V686M016ATE040 KEMET 1: $3.51 827In Stock	Mfr. Part No. T521V686M016ATE040 Mouser Part No 80-T521V686M16ATE40	KEMET	Tantalum Capacitors - Polymer 16V 68uF 2917 20% ESR=40mOhms Learn More about KEMET t521 caps	Datasheet	827In Stock	Cut Tape $3.51 $2.41 $1.97 $1.84 $1.73 Reel $1.59 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	68 uF	16 VDC	SMD/SMT	20 %	2917	40 mOhms	108.8 uA	1.8 mm	- 55 C	+ 105 C	7343	V Case	T521 SSD	Reel, Cut Tape, MouseReel