RS, NS
Wirewound Resistors, Military, MIL-PRF-26 Qualified,
Vishay Dale
Type RW, Precision Power, Silicone Coated
1.50
[38.10]*
DIMENSIONS
A
GLOBAL
MODEL
DIMENSIONS in inches [millimeters]
Min.
A
B
C
D
(Max.)**
RS1/8
RS1/4
RS1/2
RS01A
0.155 ± 0.015
[3.94 ± 0.381]
—
0.065 ± 0.015
[1.65 ± 0.381]
0.020 ± 0.002
[0.508 ± 0.051]
D
B
C
0.250 ± 0.031 0.281
[6.35 ± 0.787] [7.14]
0.085 ± 0.020
[2.16 ± 0.508]
0.020 ± 0.002
[0.508 ± 0.051]
*On some standard reel pack methods, the leads may be trimmed to
a shorter length than shown.
0.312 ± 0.016 0.328 0.078 + 0.016 - 0.031 0.020 ± 0.002
[7.92 ± 0.406] [8.33] [1.98 + 0.406 - 0.787] [0.508 ± 0.051]
NOTE: RS-1/8 terminal length will be 1.0" [25.4 mm] minimum.
MATERIAL SPECIFICATIONS
0.406 ± 0.031 0.437
0.094 ± 0.031
[2.39 ± 0.787]
0.020 ± 0.002
[0.508 ± 0.051]
Element: Copper-nickel alloy or nickel-chrome alloy, depending on
resistance value
RS01A...300 [10.31 ± 0.787] [11.10]
Core: Ceramic, steatite or alumina, depending on physical size
Coating: Special high temperature silicone
RS01M
RS002
RS02M
RS02B
0.285 ± 0.025 0.311
[7.24 ± 0.635] [7.90]
0.110 ± 0.015
[2.79 ± 0.381]
0.020 ± 0.002
[0.508 ± 0.051]
StandardTerminals:100%Sn, or60/40Sn/PbcoatedCopperweld®.
NOTE: Military "RW" parts are only available with 60/40 Sn/Pb finish.
End Caps: Stainless steel
0.625 ± 0.062 0.765
[15.88 ± 1.57] [19.43]
0.250 ± 0.031
[6.35 ± 0.787]
0.040 ± 0.002
[1.02 ± 0.051]
Deviations for RS-1/8: Thermoset silicone molded construction,
endcaps will be nickel-silver alloy and terminals will be tinned copper
Part Marking: DALE, Model, Wattage*, Value,Tolerance, Date Code
*Wattage marked on part will be "U" characteristic
0.500 ± 0.062 0.562
[12.70 ± 1.57] [14.27]
0.185 ± 0.015
[4.70 ± 0.381]
0.032 ± 0.002
[0.813 ± 0.051]
0.560 ± 0.062 0.622
0.187 ± 0.031
[4.75 ± 0.787]
0.032 ± 0.002
[0.813 ± 0.051]
RS02B...300 [14.22 ± 1.57] [15.80]
120
RS02C
0.500 ± 0.062 0.593
[12.70 ± 1.57] [15.06]
0.218 ± 0.031
[5.54 ± 0.787]
0.040 ± 0.002
[1.02 ± 0.051]
100
RS02C...17 0.500 ± 0.062 0.593
RS02C...23 [12.70 ± 1.57] [15.06]
0.218 ± 0.031
[5.54 ± 0.787]
0.032 ± 0.002
[0.813 ± 0.051]
80
RS005
RS005...69
RS005...70
0.875 ± 0.062
1.0
0.312 ± 0.031
[7.92 ± 0.787]
0.040 ± 0.002
[1.02 ± 0.051]
[22.23 ± 1.57] [25.4]
60
RS007
1.22 ± 0.062
[30.99 ± 1.57] [32.51]
1.28
0.312 ± 0.031
[7.92 ± 7.87]
0.040 ± 0.002
[1.02 ± 0.051]
CHAR. V
40
RS010
1.78 ± 0.062 1.87
0.375 ± 0.031
[9.53 ± 0.787]
0.040 ± 0.002
[1.02 ± 0.051]
RS010...39 [45.21 ± 1.57] [47.50]
RS010...38 1.78 ± 0.062 1.84
20
CHAR. U
0.375 ± 0.031
[9.53 ± 0.787]
0.040 ± 0.002
[1.02 ± 0.051]
[45.21 ± 1.57] [46.74]
0
-65 -50
0
50
150
250
350
**B (Max.) dimension is clean lead to clean lead.
25
Derating
AMBIENT TEMPERATURE IN °C
NS NON-INDUCTIVE
Modelsofequivalentphysicalandelectricalspecificationsareavailable
with non-inductive (Aryton-Perry) winding. They are identified by
substitutingtheletterNforRinthemodelnumber(NS-5, forexample).
Two conditions apply:
1. For NS models, divide maximum resistance values by two
2. Body O.D. on NS-2C may exceed that of the RS-2C by 010"
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
RS RESISTOR CHARACTERISTICS
Temperature Coefficient
Dielectric Withstanding Voltage
Maximum Working Voltage
Insulation Resistance
Terminal Strength
ppm/°C
± 90 for below 1 Ω, ± 50 for 1 Ω to 9.9 Ω, ± 20 for 10 Ω and above
500 minimum for RS-1/8 thru RS-1A, 1000 minimum for all others
(P x R)1/2
1000 Megohm minimum dry, 100 Megohm minimum after moisture test
5 minimum for RS-1/8 thru RS-1A, 10 minimum for all others
MIL-PRF-26 type - Meets requirements of ANSI J-STD-002
Characterisitic U = - 65/+ 250, Characteristic V = - 65/+ 350
VAC
V
Ω
lb
–
Solderability
Operating Temperature Range
°C
PERFORMANCE*
TEST
CONDITIONS OF TEST
TEST LIMITS
Characteristic U
Characteristic V
± (2.0 % + 0.05 Ω) ∆R
± (2.0 % + 0.05 Ω) ∆R
± (0.1 % + 0.05 Ω) ∆R
± (2.0 % + 0.05 Ω) ∆R
Thermal Shock
Rated power applied until thermally stable, then a min. of 15 minutes at - 55 °C
± (0.2 % + 0.05
± (0.2 % + 0.05
± (0.1 % + 0.05
± (0.2 % + 0.05
± (0.5 % + 0.05
± (0.2 % + 0.05
± (0.1 % + 0.05
± (0.1 % + 0.05
± (0.5 % + 0.05
Ω)
Ω)
Ω)
Ω)
Ω)
Ω)
Ω)
Ω)
Ω)
∆
∆
∆
∆
∆
∆
∆
∆
∆
R
R
R
R
R
R
R
R
R
Short Time Overload
5 x rated power (3.75 watt and smaller), 10 x rated power (4 watt and larger) for 5 seconds
Dielectric Withstanding Voltage 500 minimum for RS-1/8 thru RS-1A, 1000 for all others, duration of 1 minute
Low Temperature Storage
High Temperature Exposure
Moisture Resistance
Shock, Specified Pulse
Vibration, High Frequency
Load Life
- 65 °C for 24 hours
250 hours at: U = + 250 °C, V = + 350 °C
MIL-STD-202 Method 106, 7b not applicable
MIL-STD-202 Method 213, 100 g's for 6 milliseconds, 10 shocks
Frequency varied 10 to 2000 Hz, 20 g peak, 2 directions 6 hours each
2000 hours at rated power, + 25 °C, 1.5 hours “ON”, 0.5 hours “OFF”
5 to 10 sec., 5 or 10 lb pull test (depending on size),
torsion test - 3 alternating directions, 360° each
± (2.0 % + 0.05
± (2.0 % + 0.05
± (0.2 % + 0.05
± (0.2 % + 0.05
± (3.0 % + 0.05
Ω)
Ω)
Ω)
Ω)
Ω)
∆
∆
∆
∆
∆
R
R
R
R
R
Terminal Strength
± (0.1 % + 0.05
Ω)
∆
± (1.0 % + 0.05
Ω)
∆
R
R
*All ∆R figures shown are maximum, based upon testing requirements per MIL-PRF-26.
Document Number 30204
Revision 22-Mar-06
For technical questions, contact ww2bresistors@vishay.com
www.vishay.com
125