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Home » Product Knowledge Center » KEMET T521 Polymer Tantalum Capacitor







Introducing
The First 35 Volt Rated
Polymer Tantalum Capacitor

KEMET introduces the T521 Series High Voltage Polymer Tantalum Capacitor, the first 35 volt rated polymer tantalum chip capacitor. Prior to the release of the T521 series, polymer tantalum capacitors were limited to application voltages of less than 20V.

This new technology involves advances in materials and the manufacturing process to produce a polymer tantalum capacitor suitable for applications of up to 28V of continuous duty, high voltage 16V - 35V. The T521 series features up to 68uF capacitance value, high ripple current capability, safe failure mode, and low ESR. The KEMET T521 Series High Voltage Polymer Tantalum Capacitor is volumetrically efficient, has stable temperature characteristics, is Pb Free when ordered with 100% Sn Termination Finish, RoHs compliant, and halogen free.

The KO-CAP, KEMET's Organic Polymer Tantalum Capacitor, 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.

At this time, no other manufacturer has announced the release of a polymer tantalum chip capacitor rated above 25V.






Features
  • High Voltage (16V - 35V)
  • Up to 68uF Capacitance value
  • High ripple current capability
  • Volumetrically efficient
  • Safe failure mode
  • Low ESR
  • Stable temperature characteristics
  • Pb Free#/RoHS Compliant & Halogen Free
#when ordered with 100% Sn Termination Finish



View Products List
ItemPerformance Characteristics
Operating Temperature
-55ºC to 125ºC
Rated Capacitance Range
15uF - 68uF @ 120 Hz/25ºC
Capacitance Tolerance
M Tolerance (20%)
Rated Voltage Range
16V - 35V
Dissipation Factor (DF)
≤ 10%
ESR (100KHz)
Refer to Part Number Electrical Specification Table
Leakage Current
≤ 0.1CV (µA) at Rated Voltage after 5 minutes
Endurance
105ºC @ rated voltage, 2000 Hrs.
125ºC @ 2/3 Rated Voltage,
2000 Hrs.
ΔC/C
Within -20/+10
of initial value
DF ≤ Initial Limit
DCLIL @ 105ºC, 2x IL @ 125ºC
ESR2x Initial Limit
Humidity
 60C, 90%RH, 500Hr, No Load
 ΔC/CWithin -5%/+35%
of initial value
DF≤ Initial Limit
DCLWithin 3.0 x initial limit
Temperature Stability
Extreme temperature exposure at a succession of continuous steps at +25C, -55 C, +25 C, +85 C, +125 C, +25 C. +25ºC -55ºC +85ºC +125ºC
ΔC/C-
IL*		 +/-20% +/-20% +/-30%
DF-
IL		 IL 1.2 x IL
 1.5 x IL
DCL-
IL		 n/a 10 x IL
 10 x IL
Surge Voltage
105C, 1.32x Rated Voltage
1000 cycles
ΔC/CWithin -20/+1-
of initial value
DFWithin initial limits
DCLWithin initial limits
ESRWithin initial limits
*IL = Initial Limit
Mouser Part Number Case Code / EIA Case Size Cap (µF) Voltage DCL VR (µA) DF 120Hz (%) ESR 100KHz* (mΩ) Maximum allowable ripple current (mArms) 100kHz* MSL Reflow Temp ≤260ºC
T521V156M35ATE100 V/7343-20 15 35
 52.5 10 100
 1200 3
T521V476M20ATE90 V/7343-20 47 20 94 10 90 1400 3
T521D476M20ATE55
D/7343-31 47 20 94 10 55 1700 3
T521V226M25ATE60 V/7343-20 22 25 55 10 60 1800 3
T521V156M35ATE125
V/7343-20 15 35 52.5 10 125 1200 3
KO-CAPs







T521V686M16ATE90
V/7343-20
6816 108.8
 10 901400 3
T521D107M16ATE50
D/7343-31
10016 160
 10 502100 3
T521V476M20ATE55
V/7343-20
 4720 94
 10 551800 3
T521V336M25ATE60
 V/7343-20
 33
 25
 82.5
 10
 60
 1800
 3
T521D336M25ATE60
 D/343-31
 33
 25
 82.5
 10
 60
 1900
 3
T521X476M35ATE30
 X/7343-43
 47
35
 164.5
 10
 30
 2900
 3
T521X476M35ATE70
X/7343-43
 47
 35
 164.5
 10
 70
 1900
 3
T521V686M16ATE050
V/7343-20
6816108.810 501900 3






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  • Passive Components|Capacitors