Two factors affect the temperature of the
components in an electronic ballast. The
first is the ambient temperature around
the ballast; the second is the power that
is lost from the ballast and converted to
heat.

Danfoss’ robust "heavy duty" design and
uncompromising component selection
give extremely limited heat generation
and together with the heat-conductive 
encapsulation mass, ensure high reliability.

Components must be suitable for the
temperatures specified as the operating
range for Danfoss electronic ballasts:
–35°C [–31°F] to +55°C [+131°F]. The
components used by Danfoss belong
exclusively to quality classes higher than
the normally used "Consumer Version".

Especially critical components, among
them the electrolytic capacitor, are from the
highest quality class: "Military/Aerospace
Version".

As can be seen in fig. 1, the result is read
from a coordinate system that shows the
drop-out rate throughout the entire life of
the ballast, at different temperatures.

Danfoss Lighting Controls offers customerspecific
calculation and we are always
ready to pass on our knowledge to customers
in connection with the development
of lighting units, illuminated signs, display
cases, etc. This is our contribution in
helping our customers optimise operating
life and reliability.