RWR Military
www.vishay.com
Vishay Dale
Wirewound Resistors, Military/Established Reliability,
MIL-PRF-39007 Qualified, Type RWR, R Level, Axial Lead
FEATURES
• High temperature silicone coated
• Complete welded construction
• Qualified to MIL-PRF-39007
• Available in non-inductive styles (type N) with
Aryton-Perry winding for lowest reactive components
• “S” level failure rate available
Note
• “Terminal Wire and Winding” type “W” and “Z” are not listed
below but are available upon request. Please reference
MIL-PRF-39007 QPL for approved “failure rate” and “resistance
tolerance/ranges”
STANDARD ELECTRICAL SPECIFICATIONS
MILITARY MODEL
RWR81S
RWR81N
RWR82S
RWR82N
RWR80S
RWR80N
RWR71S
RWR71N
RWR89S
RWR89N
RWR74S
RWR74N
RWR84S
RWR84N
RWR78S
RWR78N
VISHAY REFERENCE
MODEL
EGS-1-80
EGN-1-80
EGS-2
EGN-2
EGS-3-80
EGN-3-80
ESS-2A
ESN-2A
ESS-2B
ESN-2B
ESS-5
ESN-5
EGS-10-80
EGN-10-80
ESS-10
ESN-10
POWER RATING
P
25 °C
W
1
1
2
2
2
2
2
2
3
3
5
5
7
7
10
10
RESISTANCE RANGE
± 0.1 %
0.499 to 1K
0.499 to 499
0.499 to 1.3K
0.499 to 649
0.499 to 3.16K
0.499 to 1.58K
0.499 to 12.1K
0.499 to 6.04K
0.499 to 4.12K
0.499 to 2.05K
0.499 to 12.1K
0.499 to 6.04K
0.499 to 12.4K
0.499 to 6.19K
0.499 to 39.2K
0.499 to 19.6K
RESISTANCE RANGE
± 0.5 %, ± 1 %
0.1 to 1K
0.1 to 499
0.1 to 1.3K
0.1 to 649
0.1 to 3.16K
0.1 to 1.58K
0.1 to 12.1K
0.1 to 6.04K
0.1 to 4.12K
0.1 to 2.05K
0.1 to 12.1K
0.1 to 6.04K
0.1 to 12.4K
0.1 to 6.19K
0.1 to 39.2K
0.1 to 19.6K
WEIGHT
(typical) g
0.21
0.21
0.23
0.23
0.34
0.34
0.90
0.90
0.70
0.70
4.2
4.2
3.6
3.6
9.0
9.0
Note
• RWR82S and RWR82N: Core consists of beryllium oxide ceramic
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: RWR74S49R9FSB12
R
MIL TYPE
(5 digits)
RWR71
RWR74
RWR78
RWR80
RWR81
RWR82
RWR84
RWR89
W
R
7
4
S
4
9
R
9
F
S
B
1
2
PACKAGING CODE
(3 digits)
B12
= Bulk pack
S70
= Tape/reel
(smaller than 5 W)
S73
= Tape/reel
(5 W and higher)
BSL
= Bulk pack,
single lot date code
RSL
= Tape/reel,
single lot date code
TERMINAL WIRE AND WINDING
(1 digit)
S
= Solderable, inductive
N
= Solderable, non-inductive
W
= Weldable, inductive
(1)
Z
= Weldable, non-inductive
(1)
RESISTANCE VALUE
(4 digits)
3 digit significant figure,
followed by a multiplier
49R9
= 49.9
1000
= 100
1001
= 1000
TOLERANCE CODE
(1 digit)
B
= ± 0.1 %
D
= ± 0.5 %
F
= ± 1.0 %
FAILURE RATE
(1 digit)
M
= 1.0 %/1000 h
P
= 0.1 %/1000 h
R
= 0.01 %/1000 h
S
= 0.001 %/1000 h
(1)
Note
Note that “W” and “Z” are not listed above but are available, see MIL-PRF-39007 QPL for available resistance values.
1
For technical questions, contact:
ww2bresistors@vishay.com
Revision: 30-Mar-12
Document Number: 30203
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
RWR Military
www.vishay.com
DIMENSIONS
in inches [millimeters]
A
1.50 [38.10]
(1)
min.
Vishay Dale
B
C
MILITARY MODEL
RWR81
RWR82
RWR80
RWR71
RWR89
RWR74
RWR84
RWR78
DIMENSIONS
in inches [millimeters]
A
0.250 ± 0.031 [6.35 ± 0.787]
0.312 ± 0.016 [7.92 ± 0.406]
0.406 ± 0.031 [10.31 ± 0.787]
0.812 ± 0.062 [20.62 ± 1.58]
0.560 ± 0.062 [14.22 ± 1.58]
0.875 ± 0.062 [22.23 ± 1.58]
0.875 ± 0.062 [22.23 ± 1.58]
1.780 ± 0.062 [45.21 ± 1.58]
B
0.085 ± 0.020 [2.16 ± 0.508]
0.078 + 0.016 - 0.031 [1.98 + 0.406 - 0.787]
0.094 ± 0.031 [2.39 ± 0.787]
0.187 ± 0.031 [4.75 ± 0.787]
0.187 ± 0.031 [4.75 ± 0.787]
0.312 ± 0.031 [7.92 ± 0.787]
0.312 ± 0.031 [7.92 ± 0.787]
0.375 ± 0.031 [9.525 ± 0.787]
C
0.020 ± 0.0015 [0.508 ± 0.038]
0.020 ± 0.0015 [0.508 ± 0.038]
0.020 ± 0.0015 [0.508 ± 0.038]
0.032 ± 0.002 [0.813 ± 0.051]
0.032 ± 0.002 [0.813 ± 0.051]
0.040 ± 0.002 [1.02 ± 0.051]
0.040 ± 0.002 [1.02 ± 0.051]
0.040 ± 0.002 [1.02 ± 0.051]
Note
(1)
On some standard reel pack methods, the leads may be trimmed to a shorter length than shown.
TECHNICAL SPECIFICATIONS
PARAMETER
Dielectric Withstanding Voltage
Short Time Overload
Maximum Working Voltage
Insulation Resistance
Terminal Strength
Solderability
Operating Temperature Range
UNIT
V
AC
-
V
.
lb
-
°C
RWR RESISTOR CHARACTERISTICS
500 minimum for 2 W and smaller, 1000 minimum for 3 W and larger
5 x rated power for 5 s for 3 W size and smaller,
10 x rated power for 5 s for 5 W size and greater
(P x
R)
1/2
1000 M minimum dry, 100 M minimum after moisture test
5 minimum for 2 W and smaller, 10 minimum for 3 W and larger
Meets requirements of ANSI J-STD-002
- 55 to + 250
RESISTANCE TEMPERATURE COEFFICIENT
RWR71
RWR74
RWR78
RWR80
RWR81
RWR82
RWR84
RWR89
TEMPERATURE
COEFFICIENT
RESISTANCE RESISTANCE RESISTANCE RESISTANCE RESISTANCE RESISTANCE RESISTANCE RESISTANCE
(ppm/°C)
RANGE ()
RANGE ()
RANGE ()
RANGE ()
RANGE ()
RANGE ()
RANGE ()
RANGE ()
± 650
± 400
± 50
± 30
± 20
0.1 to 0.499
0.505 to 1.0
1.01 to 10
10.1 to 73.2
74.1
and above
0.1 to 0.499
0.505 to 1.0
1.01 to 10
10.1 to 158
160
and above
0.1 to 0.499
0.505 to 1.0
1.01 to 10
10.1 to 453
459
and above
0.1 to 0.499
0.505 to 1.0
1.01 to 10
-
10.1
and above
0.1 to 0.499
0.505 to 1.0
1.01 to 10
-
10.1
and above
0.1 to 0.499
0.505 to 1.0
1.01 to 10
-
10.1
and above
0.1 to 0.499
0.505 to 1.0
1.01 to 10
10.1 to 158
160
and above
0.1 to 0.499
0.505 to 1.0
1.01 to 10
10.1 to 42.2
42.7
and above
Revision: 30-Mar-12
2
For technical questions, contact:
ww2bresistors@vishay.com
Document Number: 30203
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
RWR Military
www.vishay.com
MATERIAL SPECIFICATIONS
Element:
Copper-nickel alloy or nickel-chrome alloy,
depending on resistance value
Core:
Ceramic, beryllium oxide
(1)
, steatite or alumina,
depending on power requirement
Coating:
Special high temperature silicone
Terminal and Winding:
The terminal and the winding are
identified by a letter symbol in the military type designation.
Military symbol:
S
= Solderable, inductively wound
W
= Weldable, inductively wound
N
= Solderable, non-inductively wound
Z
= Weldable, non-inductively wound
Terminals:
Solderable - Tinned Copperweld
®
Weldable - bare nickel per MIL-STD-1276, Type N-1
End Caps:
Stainless steel
Part Marking:
Source code, JAN, military PIN, date/lot code
Note
(1)
RWR82S and RWR82N: Core consists of beryllium oxide
ceramic
Vishay Dale
DERATING
RATED POWER IN %
120
100
80
60
40
20
0
- 65 - 50
0
25
50
150
250
AMBIENT TEMPERATURE IN °C
PERFORMANCE
TEST
Thermal Shock
Short Time Overload
Dielectric Withstanding Voltage
Low Temperature Storage
High Temperature Exposure
Moisture Resistance
Shock, Specified Pulse
Vibration, High Frequency
Load Life
Extended Life
Terminal Strength
CONDITIONS OF TEST
MIL-STD-202, method 107
5 x rated power (RWR71, RWR80, RWR81, RWR89, RWR82),
10 x rated power (RWR74, RWR78, RWR84) for 5 s
500 V
rms
(RWR80, RWR81, RWR82),
1000 V
rms
(RWR71, RWR74, RWR78, RWR84, RWR89), 1 min duration
- 55 °C for 24 h
250 °C for 2000 h
MIL-STD-202, method 106
MIL-STD-202, method 213, condition I
MIL-STD-202, method 204, condition D
2000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
10 000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
MIL-STD-202, method 211, condition A and C
5 pound (RWR80, RWR81, RWR82),
10 pound (RWR71, RWR74, RWR78, RWR84, RWR89)
TEST LIMITS
± (0.2 % + 0.005
) R
± (0.2 % + 0.005
) R
± (0.1 % + 0.005
) R
± (0.1 % + 0.005
) R
± (1.0 % + 0.005
) R
(2)
± (0.2 % + 0.005
) R
± (0.1 % + 0.005
) R
± (0.1 % + 0.005
) R
± (0.5 % + 0.005
) R
± (1.0 % + 0.005
) R
± (0.1 % + 0.005
) R
Note
(2)
For resistance values above 100
,
test limit is ± 1.0 %.
Revision: 30-Mar-12
3
For technical questions, contact:
ww2bresistors@vishay.com
Document Number: 30203
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
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www.vishay.com
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Revision: 12-Mar-12
1
Document Number: 91000
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