NTC
NTC THERMISTOR
Max. steady state current.
max.
max
The maximum allowable continuous current passing through
thermistor at 25
.
Dissipation Coefficient
It's the ratio of the changes with a thermistor dissipation power, in
a
pre-set ambient temperature, to the changes with the
,
=
P/ T
temperature. The formula is as below: = P/ T changes in
response when the ambient temperature changes, within the
ranges of the working temperature.
Thermal Time Constant
At Zero-power and when amutatio occurs with the temperature,
the time "t", which is-spent for finishing 63.2% of the gap between
the beginning temperature and the ending temperature in the
thermistor. is directly proportional to"c",the heat capacity of the
thermistor, and is inversely proportional to , the dissip ation
63.2%
C
=C /
constant. That is " =C/ " .
APPLICATIONS
Conversion power supply, switch power, UPS power, Kinds of electric
heter, electronic energy-saving lamps, electronic ballast etc all kinds
of power cicuit proterction of electronic equipments, filament proterction
of CRT, bulb and other lighting lamps.
UPS
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