product guide
TYPE RXF - FUSIBLE RESISTOR
Wirewound, Stand Up Fusible Resistor, Ceramic Case

Technical Specifications
Type Power rating
@ 25 °C
Resistance Range Dimensions (mm)
Min. Max. W S H
RXF-2 1.0W 1R0 100R0 12.0 8.0 25.0
RXF-3 1.5W 1R0 100R0 13.0 9.0 26.0
RXF-5 2.1W 1R0 100R0 13.0 9.0 26.0

Characteristics
Test Condition Specifications
Tolerances ± 5% (J)
±10% (K)
Dielectric Strength 1000V, R < ± 0.5% R + 0.05
TCR < ± 400 x 10 -6 °C
Insulation Resistance 500V, > 20 M
Load life: 70% power rate @ 70 °C, 1000 hrs R < ± 0.2% R + 0.05
Terminal strength R < ± 0.5% R + 0.05
Fusing overload characteristic ref. fig. 3

Derating Curve Blowtime Curve at Elevated Wattages
To find the fusing time at an elevated wattage, multiply the resistor's rated wattage @ 25 °C by the power multiplier. (fig. 3)
Example: to increase the rated wattage of a RXF-2 1W, 50 times, multiply 1W x 50 = 50W. Resistor will blow at approximately 25 seconds per chart.
ORDERING INFORMATION
Example: 1W 10ohm 5%
RXF-2
10R0
J
Type
Resistance
Tolerance
Use R for decimal
J = 5%
K = 10%

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