High-Voltage Polymer Tantalum SMT Capacitors - T521 Series
KEMET organic polymer capacitors (KO-CAP) deliver high-voltage options for input power rails
KEMET T521 series high-voltage polymer capacitors are designed for input applications such as 12 V, 24 V, and 48 V power rails. This series demonstrates excellent high-voltage handling capabilities and is used as a replacement for other high-capacitance components such as traditional MnO2 tantalum and aluminum electrolytic capacitors.
The use of tantalum anode provides a high-energy density capacitor solution, revealing capacitance stability with voltage, temperature range, and lifespan. The polymer cathode system allows for extremely low ESR, high ripple current handling, and a safe failure mode.
The T521 series can be safely operated for continuous duty at 90% of the rated voltage and can withstand transient conditions up to the rated voltage of the component. This series is ideally suited for high-efficiency power supplies, high-reliability applications, space- or weight-restricted applications, outdoor environments, and any other application that desires a compact design, high performance, and long life expectancy.
- Voltage ratings of 2 V to 75 V
- High volumetric efficiency
- Stable temperature characteristics
- 0.68 µF up to 1500 µF capacitance values
- High ripple current capability
- Low ESR down to 4 mΩ
- High reliability
- 100% surge current tested
- Low-profile design
- Benign failure mode
- Pb-free when ordered with termination: 100% Sn, Ni-Pd-Au, or non-magnetic 100% Sn solder
- RoHS compliant and halogen-free
White paper: Polymer technology for high-power GaN-based smart chargers
KO-CAP® T521 Series Capacitors
| Image | Manufacturer Part Number | Description | Voltage - Rated | Available Quantity | Price | ||
|---|---|---|---|---|---|---|---|
![]() | ![]() | T521X337M016ATE025 | CAP TANT POLY 330UF 16V 2917 | 16 V | 0 - Immediate | $26.98 | View Details |
![]() | ![]() | T521X227M016ATE035 | CAP TANT POLY 220UF 16V 2917 | 16 V | 7855 - Immediate | $15.56 | View Details |
![]() | ![]() | T521X107M025ATE060 | CAP TANT POLY 100UF 25V 2917 | 25 V | 32914 - Immediate | $19.47 | View Details |
![]() | ![]() | T521V107M016ATE050 | CAP TANT POLY 100UF 16V 2917 | 16 V | 0 - Immediate | $9.16 | View Details |
![]() | ![]() | T521D336M035ATE065 | CAP TANT POLY 33UF 35V 2917 | 35 V | 0 - Immediate | $14.02 | View Details |
T521 Series Capacitors
| Image | Manufacturer Part Number | Description | Voltage - Rated | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|
![]() | ![]() | T521V476M025ATE040 | CAP ALUM POLY 47UF 20% 25V SMD | 25 V | 813 - Immediate | $8.26 | View Details |
![]() | ![]() | T521B336M020ATE070 | CAP TANT POLY 33UF 20V 70MOHM | 20 V | 1732 - Immediate | $5.14 | View Details |
![]() | ![]() | T521V686M025ATE050 | CAP TANT POLY 68UF 25V 100MOHM | 25 V | 690 - Immediate | $8.30 | View Details |







