RW Military
www.vishay.com Vishay Dale
Revision: 15-Nov-17 1Document Number: 30281
For technical questions, contact: ww2aresistors@vishay.com
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
Wirewound Resistors, Military, MIL-PRF-26 Qualified, Type RW,
Precision Power, Silicone Coated, Axial Lead
DESIGN SUPPORT TOOLS
FEATURES
• High temperature coating (> 350 °C)
• Complete welded construction
• Qualified to MIL-PRF-26
• Excellent stability in operation (typical resistance
shift < 0.5 %)
Note
•
RW67, RW68, RW69 available tolerance for these MIL parts is ± 5 % for 1
and above, ± 10 % below 1
click logo to get started
Available
Models
STANDARD ELECTRICAL SPECIFICATIONS
MILITARY
MODEL
VISHAY
REFERENCE
MODEL
POWER RATING
P25 °C W
CHARACTERISTIC U
POWER RATING
P25 °C W
CHARACTERISTIC V
RESISTANCE
RANGE
RESISTANCE
RANGE
RESISTANCE
RANGE
WEIGHT
(typical)
g
± 0.1 % ± 0.5 %, ± 1 % ± 5 %, ± 10 %
RW81 G001...380 1.0 - 0.499 to 1K 0.1 to 1K - 0.20
RW70 RS01A...300 1.0 - 0.499 to 2.74K 0.1 to 2.74K - 0.34
RW80 G003...380 2.0 - 0.499 to 2.74K 0.1 to 2.74K - 0.34
RW79 RS02B...300 3.0 - 0.499 to 6.49K 0.1 to 6.49K - 0.70
RW69 RS02C...23 - 3.0 - - 0.1 to 2.0K 1.6
RW74 RS005...69 5.0 - 0.499 to 24.3K 0.1 to 24.3K - 4.2
RW67 RS005...70 - 6.5 - - 0.1 to 8.2K 4.2
RW78 RS010...38 10.0 - 0.499 to 71.5K 0.1 to 71.5K - 9.0
RW68 RS010...39 - 11.0 - - 0.1 to 20K 9.0
TECHNICAL SPECIFICATIONS
PARAMETER UNIT RW RESISTOR CHARACTERISTICS
Temperature Coefficient ppm/°C ± 20 for 10 and above, ± 50 for 1 to 9.9 , ± 90 for below 1
Maximum Working Voltage V (P x R)1/2
Insulation Resistance 1000 M minimum dry, 100 M minimum after moisture test
Solderability - MIL-PRF-26 type - meets requirements of ANSI J-STD-002
Operating Temperature Range °C Characteristic U = -65 to +250, characteristic V = -65 to +350
MILITARY PART NUMBER INFORMATION
Military Part Numbering example: RW80U49R9FB12
MIL TYPE CHARACTERISTIC RESISTANCE VALUE TOLERANCE CODE PACKAGING CODE
RW67
RW68
RW69
RW70
RW74
RW78
RW79
RW80
RW81
U = max. hotspot 275 °C
V = max. hotspot 350 °C
U Characteristic
3 digit significant figure,
followed by a multiplier
49R9 = 49.9
1000 = 100
1001 = 1000
Tolerance for “U”
characteristic only
B = ± 0.1 %
D = ± 0.5 %
F = ± 1.0 %
Tolerance for “V”
characteristic is not listed
and is as specified by
MIL-PRF-26
B12 = bulk pack
S70 = tape/reel
(smaller than 5 W)
S73 = tape/reel
(5 W and higher)
V Characteristic
2 digit significant figure,
followed by a multiplier
4R7 = 4.7
102 = 1000
80U4 R9F9RW B12
RW Military
www.vishay.com Vishay Dale
Revision: 15-Nov-17 2Document Number: 30281
For technical questions, contact: ww2aresistors@vishay.com
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
DIMENSIONS in inches [millimeters]
Note
(1) On some standard reel pack methods, the leads may be
trimmed to a shorter length than shown
MATERIAL SPECIFICATIONS
Element: copper-nickel alloy or nickel-chrome alloy,
depending on resistance value
Core: ceramic, steatite or alumina, depending on physical
size
Coating: special high temperature silicone
Standard Terminals: 60/40 Sn/Pb coated Copperweld®
End Caps: stainless steel Note
(1) B (max.) dimension is clean lead to clean lead
DERATING
MARKING
MODELS:
RW70, RW74, RW78, RW79,
RW80, RW81
MODELS:
RW67, RW68, RW69
Characteristic U Characteristic V
Tolerance code: B = 0.1 %,
D = 0.5 %, F = 1 % Tolerance code: not listed
Example Example
Dale Dale
RW80U Model RW68 Model
1001F Characteristic, value V100 Characteristic, value
0703 Date code M0202 Date code
C
D
A1.50
[38.10] (1)
min.
B
MILITARY
MODEL
DIMENSIONS
in inches [millimeters]
AB
(1)
(max.) CD
RW81 0.250 ± 0.031
[6.35 ± 0.787]
0.281
[7.14]
0.085 ± 0.020
[2.16 ± 0.508]
0.020 ± 0.002
[0.508 ± 0.051]
RW70
RW80
0.406 ± 0.031
[10.31 ± 0.787]
0.437
[11.10]
0.094 ± 0.031
[2.39 ± 0.787]
0.020 ± 0.002
[0.508 ± 0.051]
RW79 0.560 ± 0.062
[14.22 ± 1.57]
0.622
[15.80]
0.187 ± 0.031
[4.75 ± 0.787]
0.032 ± 0.002
[0.813 ± 0.051]
RW69 0.500 ± 0.062
[12.70 ± 1.57]
0.593
[15.06]
0.218 ± 0.031
[5.54 ± 0.787]
0.032 ± 0.002
[0.813 ± 0.051]
RW74
RW67
0.875 ± 0.062
[22.23 ± 1.57]
1.0
[25.4]
0.312 ± 0.031
[7.92 ± 0.787]
0.040 ± 0.002
[1.02 ± 0.051]
RW78 1.78 ± 0.062
[45.21 ± 1.57]
1.87
[47.50]
0.375 ± 0.031
[9.53 ± 0.787]
0.040 ± 0.002
[1.02 ± 0.051]
RW68 1.875 + 0.063 - 0.125
[47.63 + 1.60 - 3.18]
1.94
[49.28]
0.344 ± 0.094
[8.74 ± 2.39]
0.040 ± 0.002
[1.02 ± 0.051]
-65 -50 0 50 150 250 350
AMBIENT TEMPERATURE IN °C
120
100
80
60
40
20
0
% NI R
EW
OP DETAR
CHAR. V
CHAR. U
25
PERFORMANCE
TEST CONDITIONS OF TEST TEST LIMITS
CHARACTERISTIC U CHARACTERISTIC V
Thermal Shock Rated power applied until thermally stable, then a
minimum of 15 min at -55 °C ± (0.2 % + 0.05 ) R± (2.0 % + 0.05 ) R
Short Time Overload 5x rated power (3.75 W and smaller), 10 x rated power
(4 W and larger) for 5 s ± (0.2 % + 0.05 ) R± (2.0 % + 0.05 ) R
Dielectric Withstanding
Voltage
500 VRMS min. (RW70, RW80, RW81),
1000 VRMS for all others, duration of 1 min ± (0.1 % + 0.05 ) R± (0.1 % + 0.05 ) R
Low Temperature Storage -65 °C for 24 h ± (0.2 % + 0.05 ) R± (2.0 % + 0.05 ) R
High Temperature Exposure 250 h at: U = +250 °C, V = +350 °C ± (0.5 % + 0.05 ) R± (2.0 % + 0.05 ) R
Moisture Resistance MIL-STD-202 Method 106, 7b not applicable ± (0.2 % + 0.05 ) R± (2.0 % + 0.05 ) R
Shock, Specified Pulse MIL-STD-202 Method 213, 100 g’s for 6 ms, 10 shocks ± (0.1 % + 0.05 ) R± (0.2 % + 0.05 ) R
Vibration, High Frequency Frequency varied 10 Hz to 2000 Hz, 20 g peak,
2 directions 6 h each ± (0.1 % + 0.05 ) R± (0.2 % + 0.05 ) R
Load Life 2000 h at rated power, +25 °C, 1.5 h “ON”, 0.5 h “OFF” ± (0.5 % + 0.05 ) R± (3.0 % + 0.05 ) R
Terminal Strength
Pull test 5 s to 10 s, 5 lb (RW70, RW80, RW81),
10 lb for all others; torsion test - 3 alternating directions,
360° each
± (0.1 % + 0.05 ) R± (1.0 % + 0.05 ) R
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 08-Feb-17 1Document Number: 91000
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of
typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding
statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a
particular product with the properties described in the product specification is suitable for use in a particular application.
Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over
time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk.
Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document
or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
© 2017 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Vishay:
RW79U47R0FB12 RW79U2001BB12 RW70U3320FB12 RW67V562B12 RW69VR27B12 RW70U47R5FB12
RW69V2R0B12 RW67V5R1B12 RW69V1R8B12 RW69V2R0 RW69V431B12 RW69V5R1B12 RW69VR56B12
RW70U16R0FB12 RW70U2R00FB12 RW74U2R10FB12 RW74U49R9FB12 RW74UR470FB12 RW74UR800FB12
RW79U2000FB12 RW79U5R00FB12 RW81U1000FB12 RW80U10R0FB12 RW80U2201FB12 RW80U3480BB12
RW80U6500FB12 RW81U4R99FB12 RW70U3240FB12 RW69V120B12 RW80U4990FB12 RW69V5R0B12
RW70UR150FB12 RW80UR500FB12 RW69VR10B12 RW67V500B12 RW79UR200FB12 RW70U2001FB12
RW67V4R7B12 RW80U33R2FB12 RW81U2R20FB12 RW68V500B12 RW81U4750FB12 RW69V6R8B12
RW68V250B12 RW69V4R7B12 RW80U5620FB12 RW78U1002FB12 RW80U1R00FB12 RW69V501B12
RW69V621B12 RW69V560B12 RW69V151B12 RW68V151B12 RW69V390B12 RW80U31R0FB12 RW68V102B12
RW69V8R2B12 RW80U1001BB12 RW80U1001FB12 RW69V680B12 RW80U1R40FS70 RW69V7R5B12
RW69V821B12 RW69VR10S70 RW80U1500FB12 RW69V401B12 RW80U2401FS70 RW78U6982FB12
RW80U2741FB12 RW80U2000FB12 RW80UR499FB12 RW69VR24S70 RW69V820B12 RW68V4R0B12
RW69V681B12 RW69V5R6B12 RW69V391B12 RW69V150B12 RW69V561B12 RW69V9R1B12 RW69V152B12
RW68V100B12 RW80UR475FB12 RW80U2R40FB12 RW69V100S70 RW69VR47B12 RW68VR10B12
RW68V220B12 RW69V271B12 RW69V330B12 RW68V2R2B12 RW69V510B12 RW69V750B12 RW69VR22B12
RW69V511B12 RW69VR24B12 RW69V131B12 RW69V751B12 RW69VR25B12 RW80U5R60FS70
