Datasheet

26© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard T2076_T52X-530 • 4/16/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
26
KEMET Organic Capacitor (KO-CAP
®
)
T52x/T530 Polymer Electrolytic Capacitors
Derating Guidelines
50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
−55 25 85 105 125
% Rated Voltage
Temperature ºC
Recommended Application Voltage
60%
Recommended Application Voltage
KO-CAPs are solid state capacitors that demonstrate no wearout mechanism when operated within their recommended
guidelines.While the KO-CAP can be operated at full rated voltage, most circuit designers seek a minimum level of
assurance in long term reliability, which should be demonstrated with data. A voltage derating can provide the desired level
of demonstrated reliability based on industry accepted acceleration models.Since most applications do require long term
reliability, KEMET recommends that designers consider a voltage derating, according to the graphic above, for the maximum
steady state voltage.
Voltage
Rating
Maximum Recommended
Steady State Voltage
−55°C to 105°C 105°C to 125°C
75 V ≤ V
R
90% of V
R
60% of V
R
V
R
= Rated Voltage
Ripple Current/Ripple Voltage
Permissible AC ripple voltage and current are related to equivalent series resistance (ESR) and the power dissipation
capabilities of the device. Permissible AC ripple voltage, which may be applied is limited by two criteria:
a. The positive peak AC voltage plus the DC bias voltage, if any, must not exceed the DC voltage rating of the capacitor.
b. The negative peak AC voltage, in combination with bias voltage, if any, must not exceed the allowable limits specied for
reverse voltage.
The maximum power dissipation must be reduced with increasing environmental operating temperatures. Refer to the table
below for temperature compensation requirements.
Temperature Compensation Multipliers
for Maximum Ripple Current
T ≤ 45°C
45° C < T ≤ 85°C
85°C < T ≤ 125°C
1.00
0.70
0.25
T= Environmental Temperature