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Application
Note for Power Resistor
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MF Power
Resistor Ltd
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In case of
high frequency application, had better chose
Low-Inductive Resistor.
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Do not over
load Resistor.
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Keeping all
other components apart from Resistor, especially
temperature sensitive component.
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For Resistor
need to be worked continuously 100% duty cycle, choose
Resistor with rated power at least1.2 times higher than
the actual loaded power. This can extend resistor life
and lower resistor surface temperature. We don't suggest
loading resistor up to its 80% rated power for
continuous, long loading time with 100% duty cycle work. Our
resistor can withstand very high surface temperature.
However very hot resistor surface might be not good for the
operator.
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external
force cooling fans or cooling system can lower resistor surface
temperature.
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For very low
ohmic resistance Resistor, it is better to tell the
working Voltage and Duty Cycle of your application. As
different Voltage can induce different electrical current. In
turn different raw materials and production process is needed
to withstand the generated high current and temperature.
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Maximum
Voltage for a Resistor is based on Ohm's Law - limited
by the resistance value.
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For short
period of time overload, can withstand 5~10 times of the
Rated Power in 5 seconds, depends on the current pulse
width, resistor series and cooling system.
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below is
one of the Derating
Curves for Power Resistors, for individual
resistor's derating curve, please contact us.

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Clean
Resistor Tab Terminals before use. Cannot clean Resistor
with organic solvents.
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Do not
scratch surface of Resistor with any hard or pointed
object.
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Do not touch
surface of Resistor when it is connected to a power
source due to high resistor surface temperature.
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UL 94V-0
class coating, provided Resistors should work within
specification.
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For
Silicon Coated Resistors Smoke
might be emitted during initial power load, this is
normal and the resistor is safe.
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Resistance,
Rated Power, Resistor Size, Mounting Fixture and
Inductive / Low Inductive can be
made according to customer’s need.
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