Resistors General Information
Keep temperature from rising by choosing resistor with a higher rated capacity; do not use a
component having the exact load value required. For considerations of safety in extended period
applications, the rating should be more than four times higher than the actual wattage involved,
but never use resistors at less than 25% of its rated power.
In applications where resistors are subject to intermittent current surges and spikes, be sure in
advance that the components selected are capable of withstanding brief durations of increased load.
Do not exceed the recommended rated load. Resistor must used within the rated voltage range to
prevent the shortening of service life and/or failure of the wound resistance elements.
Minimum load: Resistor must be utilized at 1/10 or more of the rated voltage to prevent poor
conductance due to oxidation build-up. For basic particulars for cautions, refer to EIAJ Technical
Report RCR-2121 “Guidance for care note on fixed-resistors”.
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