MODELS CS WIRESWOUND RESISTORS - SILICONE COATED

FEATURES

  • Easy replacement of vitreous enamel resistors with no cost increase and no performance loss.
  • The whole assembly is coated with multi-layer silicone coating to give maximum wire protection from -55°C to +350°C.
  • Performance improvement is obtained by close tolerance, very low temperature coefficient and excellent stability in operation under severe environmental conditions.
  • High level reliability due to ceramic core chemically inert and centerless ground for uniformity, selected wire element and completely welded construction terminal to terminal.

SPECIFICATIONS

  • These resistors meet or exceed the requirements of MIL-R-26E specification.

ELECTRICAL

Resistance range
See table. Consult factory for values lower (up to R01) and higher than indicated.
Tolerance
Standard 5% - Available on request up to 1%
Temperature coefficient
Typical values: 100 to 30 ppm fromR10 to Rmax.
Consult factory for special applications.
Dielectric strength
500 Vdc from 2CS to 6CS.
700 Vdc from 7CS to 12CS.
Insulation resistance
1,000 MOhms minimum dry.
100 MOhms after moisture test.
Overload
5 sec. At 10 times rated power.
5 sec. At 5 times rated power 2CS and 3CS.
Non inductive
Models of equivalent physical and electrical specifications are available with non inductive Ayrton-Perry winding.

MECHANICAL

Terminal strength
10 lb. pull test.
Solderability
Continuous, satisfactory coverage when tested in accordance to MIL-R-26E.

MATERIAL

Core
Ceramic steatite or alumina centerless ground.
Resistive element
Copper-nickel alloy or nickel-chrome alloy at specified temperature coefficient.
End caps
Stainless steel.
Coating
Special high temperature silicone.
Standard terminals
Tinned copper or tinned copperweld.

DERATING

These resistors could be used in a temperature range from -55°C to +350°C. To use these components in settings with base temperature upper to +25°C you have to make a power reduction with linear derating from nominal power to zero at +350°C.

              Dimensions
ATE Type Type Mil-R-26E Rated power (W) Resistance range (Ohm) Max volt. Working (V) Temperature rise (oC/W) Weight (Gr) D (mm) L (mm) d (mm)
2CS RW69V 3 0.01-5K6 130 91 1.2 5.2±0.5 12±0.8 0.8
3CS   4 0.01-10K 200 74 1.8 6±0.5 13.5±0.8 0.8
5CS RW74U 6 0.01-24K 380 52 3.2 8±0.5 22±1.6 0.8
6CS RW67V 7 0.01-27K 435 45 3.8 8.5±0.5 25±1.6 0.8
7CS RW55V 10 0.01-47K 685 30 7 9.5±0.5 35±1.6 0.9
10CS RW68V 13 0.01-68K 940 24 9 9.5±0.5 46±1.6 0.9
12CS RW56V 15 0.01-82K 1100 21 10 9.5±0.5 51±1.6 0.9