are
designed according to international specification IEC (or to EIA) as
the ultrastable CG, known as
NP0 (C0G)
the stable 2R1 (X7R) and
the general purpose
2F4 (Y5V).
NP0 dielectric is made of ceramic materials which are not ferroelectric.This yields
a superior stability characteristic, but relatively low capacitance.
Both 2R1 (X7R) and 2F4 (Y5V) are made from ferroelectric materials,
principally barium titanate.
The NP0 capacitors are used in applicationswhich
require very stable characteristics with no dependence of
capacitance and dissipation factor (tand) on time, voltage and frequency.
Capacitance range: up to 10 mF
Rated voltage: up to 10kV
Sizes: download catalogue for details
CG(NPO), 2F4 (Y5V) and 2R1 (X7R) temperature characteristics