Capacitors with low-loss and non-linear capacitance change with temperature. Low Dielectric constant and negligible capacitance loss due to ageing. As these capacitors possess well defined temperature co-efficient, they are employed for compensating temperature effects in different circuits. Due to low loss and high stability, they are suitable for resonant and filter circuit applications and can also be used at high radio frequencies.

Capacitors with undefined temperature co-efficient. High dielectric constant ranging upto 10,000. Primarily used in filtering, de-coupling and all applications where capacitance to volume ratio is more and where capacitance variation with temperature and dielectric loss are of secondary importance.

Capacitors with high loss capacitance change with temperature. High Dielectric constant and capacitance loss due to temperature and will come within specifications after ageing.

At 2 times of the working voltage upto 2kvdc.At 1.5times of the working voltage from 3kvDC to 40kvDC.