Capacitor Category Voltage
Discrete capacitors deviate from the ideal capacitor. An ideal capacitor only stores and releases electrical energy, with no dissipation. Capacitor components have losses and parasitic inductive parts. These imperfections in material and construction can have positive implications such as linear frequency and temperature behavior in class 1 ceramic capacitors. Conversel. Voltage rating is a crucial specification of a capacitor that indicates the maximum voltage the capacitor can safely withstand without experiencing failure or breakdown. [pdf]
FAQS about Capacitor Category Voltage
What voltage can be applied continuously to a capacitor?
may be applied continuously to a capacitor. It is equal to the rated voltage up to +85°C (up to 40°C for TLJ, TLN series), beyond which it is subject to a linear derating, to 2/3 VR at 125°C fo tantalum and 2/3 VR at 1
What voltage should a 16V capacitor be rated at?
125°C device with tantalum polymers: 20% voltage derating is recommended for 16V tantalum polymer capacitor in all applications and there is also 33% derating needed at 125°C (no derating to 105°C).
What is category voltage?
The category voltage (UC) is the maximum DC voltage or peak pulse voltage that may be applied continuously to a capacitor at any temperature within the category temperature range. The relation between both voltages and temperatures is given in the picture right.
Can a 16V capacitor be used at 125°C?
You can apply maximum 10.7V to the capacitor for the entire operation temperature range to 125°C (voltage derating 20% is covered by the 33% temperature derating). Thus 16V capacitor is NOT suitable for 125°C device due to the high temperature. Need higher rated 20V tantalum polymer capacitor.
What is the rated voltage of a capacitor?
In this equation, Ur is the rated voltage, D the diameter of the capacitor can and L the length of the capacitor can. When Imax. is in mA, D in mm and L in mm, the value for is β 1 mW/mm2.
How to select a 100 m 6.3V capacitor?
The 100mΩ. 6.3V capacitor is selected by ‘rule of thumb’ 50% derating rule e.g. 6.3V capacitor is used for the 3.2v o/p. The application surge current available per equation is higher than the peak current that is used for the capacitor preconditioning.
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