RWR Military

www.vishay.com

Vishay Dale

Revision: 14-Jul-16

1

Document Number: 30203

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

Wirewound Resistors, Military/Established Reliability,

MIL-PRF-39007 Qualified, Type RWR, Up to S Level, Axial Lead

FEATURES

• High temperature silicone coated

• Complete welded construction

• Qualified to MIL-PRF-39007

• Available

in

non-inductive

styles

(type

N)

with

Ayrton-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”

Note

• RWR82S and RWR82N: Core consists of beryllium oxide ceramic

Notes

STANDARD ELECTRICAL SPECIFICATIONS

MILITARY MODEL

VISHAY REFERENCE

MODEL

POWER RATING

RESISTANCE RANGE

 RESISTANCE RANGE 

WEIGHT

(typical) g

± 0.1 %

± 0.5 %, ± 1 %

RWR81S

EGS-1-80

1

0.499 to 1K

0.1 to 1K

0.21

RWR81N

EGN-1-80

1

0.499 to 499

0.1 to 499

0.21

RWR82S

EGS-2

1.5

0.499 to 1.3K

0.1 to 1.3K

0.23

RWR82N

EGN-2

1.5

0.499 to 649

0.1 to 649

0.23

RWR80S

EGS-3-80

2

0.499 to 3.16K

0.1 to 3.16K

0.34

RWR80N

EGN-3-80

2

0.499 to 1.58K

0.1 to 1.58K

0.34

RWR71S

ESS-2A

2

0.499 to 12.1K

0.1 to 12.1K

0.90

RWR71N

ESN-2A

2

0.499 to 6.04K

0.1 to 6.04K

0.90

RWR89S

ESS-2B

3

0.499 to 4.12K

0.1 to 4.12K

0.70

RWR89N

ESN-2B

3

0.499 to 2.05K

0.1 to 2.05K

0.70

RWR74S

ESS-5

5

0.499 to 12.1K

0.1 to 12.1K

4.2

RWR74N

ESN-5

5

0.499 to 6.04K

0.1 to 6.04K

4.2

RWR84S

EGS-10-80

7

0.499 to 12.4K

0.1 to 12.4K

3.6

RWR84N

EGN-10-80

7

0.499 to 6.19K

0.1 to 6.19K

3.6

RWR78S

ESS-10

10

0.499 to 39.2K

0.1 to 39.2K

9.0

RWR78N

ESN-10

10

0.499 to 19.6K

0.1 to 19.6K

9.0

GLOBAL PART NUMBER INFORMATION

Global Part Numbering example: RWR74S49R9FSB12

MIL TYPE

(5 digits)

TERMINAL WIRE AND WINDING

(1 digit)

RESISTANCE VALUE

(4 digits)

TOLERANCE CODE

(1 digit)

FAILURE RATE

(1 digit)

PACKAGING CODE

(3 digits)

RWR71

RWR74

RWR78

RWR80

RWR81

RWR82

RWR84

RWR89

S = Solderable, inductive

N = Solderable, non-inductive

3 digit significant figure,

followed by a multiplier

49R9 = 49.9



1000 = 100



1001 = 1000



B = ± 0.1 %

D = ± 0.5 %

F = ± 1.0 %

M = 1.0 %/1000 h

P = 0.1 %/1000 h

R = 0.01 %/1000 h

S = 0.001 %/1000 h

B12 = Bulk pack

S70 = Tape/reel

(smaller than 5 W)

S73 = Tape/reel

(500 pieces)

single lot date code

single lot date code

74

S

4

R

9

F

9

WR

SB

1

R

2