Capacitors for Electronic Equipment

WIMA Capacitors
for Stringent Requirements
PCM 7.5 to 52.5 mm
WIMA metallized capacitors for stringent
requirements with printed circuit modules
(PCM) of 7.5 mm through 52.5 mm cover a
wide range of capacitances and voltages.
Metallized capacitors exhibit a thin metal
coating applied to the plastic film serving
as electrode hence making capacitors
with a very favourable capacitance/volume
ratio possible. The WIMA MKS 4
220 mF/50 VDC offers the highest capacitance
rating in the WIMA range. A further
specific characteristic of metallized capacitors
is the excellent self-healing ability.
In the case of an electric break-down
the applied metal layer evaporates. The
affected area is isolated and the capacitor
continues to function properly.
WIMA capacitors for stringent requirements
are available in capacitances
ranging from 100 pF through 220 mF with
voltage ratings from 50 VDC through
2000 VDC. Upon customer request, larger
box sizes can be supplied in 4-pin versions.
Types with terminating plates can
also be manufactured on request. The
advantage of this method of construction,
besides the improved mechanical stability
of the component on the board, is the
excellent electrical contact reliability.
WIMA FKS 3
WIMA FKP 3
WIMA MKS 4
WIMA MKP 4
WIMA capacitors for demanding requirements
are available with Polyester or
Polypropylene dielectrics with pulse duty
film/foil construction or as metallized, selfhealing
versions.
In case of film and foil types, the electrode
is differently applied than for metallized
capacitors, namely being wound with
the dielectric as a metal foil. Due to their
lower series resistance, the components
produced this way have excellent pulse
and current carrying capability, as well as
a very high insulation resistance.
WIMA capacitors are produced with the
proven box technology using solvent-resistant,
flame-retardant plastic cases according
to UL 94 V-0. They are environmentally
compatible with the RoHS 2011/65/EC
regulations of the European Union.
WIMA film/foil capacitors in PCM 7.5 mm
– 15 mm are available with values ranging
from 100 pF through 0.22 mF with voltage
ratings from 63 VDC through 1000 VDC.
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