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ESS, ESN, EGS, EGN
Vishay Dale
Wirewound Resistors, Military/Established Reliability MIL-PRF-39007 Qualified, Type RWR, R Level
FEATURES
* * * * High temperature silicone coated Complete welded construction Qualified to MIL-PRF-39007 Available in non-inductive styles (types ESN and EGN) 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
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 MIL-PRF-39007 TYPE RWR81S RWR81N RWR82S RWR82N RWR80S RWR80N RWR71S RWR71N RWR89S RWR89N RWR74S RWR74N RWR84S RWR84N RWR78S RWR78N POWER RATING P25 C W 1 1 2 2 2 2 2 2 3 3 5 5 7 7 10 10 MILITARY RESISTANCE RANGE 0.1 % 0.499 - 1K 0.499 - 499 0.499 - 1.3K 0.499 - 649 0.499 - 3.16K 0.499 - 1.58K 0.499 - 12.1K 0.499 - 6.04K 0.499 - 4.12K 0.499 - 2.05K 0.499 - 12.1K 0.499 - 6.04K 0.499 - 12.4K 0.499 - 6.19K 0.499 - 39.2K 0.499 - 19.6K 0.5 % and 1 % 0.1 - 1K 0.1 - 499 0.1 - 1.3K 0.1 - 649 0.1 - 3.16K 0.1 - 1.58K 0.1 - 12.1K 0.1 - 6.04K 0.1 - 4.12K 0.1 - 2.05K 0.1 - 12.1K 0.1 - 6.04K 0.1 - 12.4K 0.1 - 6.19K 0.1 - 39.2K 0.1 - 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
GLOBAL PART NUMBER INFORMATION
Global/Military Part Numbering: RWR74S49R9FSB12
R
W
R
7
4
S
4
9
R
9
F
S
B
1
2
MIL TYPE RWR71 RWR74 RWR78 RWR80 RWR81 RWR82 RWR84 RWR89
TERMINAL WIRE AND WINDING S = Solderable, inductive N = Solderable, noninductive W = Weldable, inductive (1) Z = Weldable, noninductive (1)
RESISTANCE VALUE 3 digit significant figure, followed by a multiplier 49R9 = 49.9 1000 = 100 1001 = 1000
TOLERANCE CODE B = 0.1 % D = 0.5 % F = 1.0 %
FAILURE RATE M = 1.0 %/1000 h P = 0.1 %/1000 h R = 0.01 %/1000 h S = 0.001 %/1000 h
PACKAGING CODE 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
Note (1) Note that "W" and "Z" are not listed above but are available, see MIL-PRF-39007 QPL for available resistance values www.vishay.com 158 For technical questions, contact: ww2bresistors@vishay.com document number: 30203 Revision: 22-Oct-08
ESS, ESN, EGS, EGN
Wirewound Resistors, Military/Established Reliability MIL-PRF-39007 Qualified, Type RWR, R Level
DIMENSIONS in inches [millimeters]
A 1.50 [38.10] (1) min.
Vishay Dale
MIL-PRF-39007 MODEL RWR81
Note (1) On some standard reel pack methods, the leads may be trimmed to a shorter length than shown
B
C
RWR82 RWR80 RWR71 RWR89 RWR74 RWR84 RWR78
MATERIAL SPECIFICATIONS
Element: Copper-nickel alloy or nickel-chrome alloy, depending on resistance value Core: Ceramic, beryllium oxide, 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(R) Weldable - bare nickel per MIL-STD-1276, Type N-1 End Caps: Stainless steel Part Marking: Source code, JAN, military PIN, date/lot code
DIMENSIONS in inches [millimeters] A B C 0.250 0.031 0.085 0.020 0.020 0.0015 [6.35 0.787] [2.16 0.508] [0.508 0.038] 0.312 0.016 0.078 + 0.016 - 0.031 0.020 0.0015 [7.92 0.406] [1.98 + 0.406 - 0.787] [0.508 0.038] 0.406 0.031 0.094 0.031 0.020 0.0015 [10.31 0.787] [2.39 0.787] [0.508 0.038] 0.812 0.062 0.187 0.031 0.032 0.002 [20.62 1.58] [4.75 0.787] [0.813 0.051] 0.560 0.062 0.187 0.031 0.032 0.002 [14.22 1.58] [4.75 0.787] [0.813 0.051] 0.875 0.062 0.312 0.031 0.040 0.002 [22.23 1.58] [7.92 0.787] [1.02 0.051] 0.875 0.062 0.312 0.031 0.040 0.002 [22.23 1.58] [7.92 0.787] [1.02 0.051] 1.780 0.062 0.312 0.031 0.040 0.002 [45.21 1.58] [7.92 0.787] [1.02 0.051]
RATED POWER IN %
120 100 80 60 40 20 0 - 65 - 50
APPLICABLE MIL-SPECIFICATION
MIL-PRF-39007: This is the military specification covering axial lead established reliability power wirewound resistors. Vishay Dale ESS, ESW, EGS, EGW, ESN and EGN resistors meet or exceed the electrical, environmental and dimensional requirements of this specification.
0
25
50
150
250
Derating
AMBIENT TEMPERATURE IN C
TECHNICAL SPECIFICATIONS
PARAMETER UNIT RWR RESISTOR CHARACTERISTICS Temperature Coefficient ppm/C 650 for 0.1 to 0.499 , 400 for 0.505 to 1 , 50 for 1.1 to 10 , 20 for 10 and above VAC 500 minimum for 2 W and smaller, 1000 minimum for 3 W and larger Dielectric Withstanding Voltage 5 x rated power for 5 s for 3 W size and smaller, Short Time Overload 10 x rated power for 5 s for 5 W size and greater Maximum Working Voltage V (P x R)1/2 Insulation Resistance . 1000 M minimum dry, 100 M minimum after moisture test Terminal Strength lb 5 minimum for 2 W and smaller, 10 minimum for 3 W and larger Solderability Meets requirements of ANSI J-STD-002 Operating Temperature Range C - 65 to + 250
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-2.2, Method 303 5 x rated power (RWR71, 80, 81, 89, 82), 10 x rated power (RWR74, 78, 84) for 5 s 500 Vrms (RWR80, 81, 82), 1000 Vrms (RWR71, 74, 78, 84, 89), 1 min duration - 65 C for 24 h 250 C for 2000 h MIL-STD-202, Method 106 MIL-STD-202, Method 205, condition C 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, 81, 82), 10 pound (RWR71, 74, 78, 84, 89) 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 (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 * For resistance values above 100 , test limit is 1.0 % document number: 30203 Revision: 22-Oct-08 For technical questions, contact: ww2bresistors@vishay.com www.vishay.com 159
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice. 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 herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. 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. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000 Revision: 18-Jul-08
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