RS Style Wirewound Fuse Resistor

www.vishay.com

Vishay Dale

Revision: 08-Jul-16

2

Document Number: 30232

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

DIMENSIONS in inches [millimeters]



MATERIAL SPECIFICATIONS

Element: copper-nickel alloy or nickel-chrome alloy,

depending on resistance value

Core: alumina ceramic

Encapsulant: thermoset silicone mold compound

End caps: stainless steel

Terminals: tinned copperweld

Part marking: Dale, model, value, tolerance, date code

MODEL

A

B

RS01A…xxx

0.422 ± 0.015 [10.72 ± 0.381]

0.110 ± 0.015 [2.79 ± 0.381]

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

TYPICAL WIREWOUND FUSE RESISTOR CHARACTERISTICS

Temperature Coefficient

ppm/°C

± 30 for 10

 and above; ± 50 for 1.0  thru 9.9 ; ± 90 for 0.1  thru 0.99 

Power Rating

W

1.0 standard, higher power ratings available

Dielectric Strength

500

Insulation Resistance

M



1000 minimum dry

Fusing Times

s

0.001 to 1.0

Minimum Fusing Current

A

Approximately 4 times the continuous operating current

obtainable on some designs. Larger ratios produce better designs.

Terminal Strength

lb

5 minimum

1.25 [31.75]

minimum

0.020 ± 0.002

[0.508 ± 0.051]

A

B

AMBIENT TEMPERATURE °C

0

50

75

100

125

150

175

200

120

100

80

60

40

20

0

Derating

25