ESS, ESW, ESN, EGS, EGW, 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 STANDARD ELECTRICAL SPECIFICATIONS MILITARY RANGE MIL-PRF-39007 POWER RATING WEIGHT P (Typical) 25C MODEL TYPE W 0.1% 0.5 & 1% g EGS-1-80 RWR81S 1 0.499 - 1k 0.1 - 1k 0.21 EGW-1 RWR81W 1 0.499 - 1k 0.1 - 1k 0.21 EGN-1-80 RWR81N 1 0.499 - 499 0.1 - 499 0.21 EGN-1-10 RWR81Z 1 0.499 - 499 0.1 - 499 0.21 EGS-2 RWR82S 1.5 0.499 - 1.3k 0.1 - 1.3k 0.23 EGW-2 RWR82W 1.5 0.499 - 1.3k 0.1 - 1.3k 0.23 EGN-2 RWR82N 1.5 0.499 - 649 0.1 - 649 0.23 EGN-2-10 RWR82Z 1.5 0.499 - 649 0.1 - 649 0.23 EGS-3-80 RWR80S 2 0.499 - 3.16k 0.1 - 3.16k 0.34 EGW-3 RWR80W 2 0.499 - 3.16k 0.1 - 3.16k 0.34 EGN-3-80 RWR80N 2 0.499 - 1.58k 0.1 - 1.58k 0.34 EGN-3-10 RWR80Z 2 0.499 - 1.58k 0.1 - 1.58k 0.34 ESS-2A RWR71S 2 0.499 - 12.1k 0.1 - 12.1k 0.90 ESW-2A RWR71W 2 0.499 - 12.1k 0.1 - 12.1k 0.90 ESN-2A RWR71N 2 0.499 - 6.04k 0.1 - 6.04k 0.90 ESN-2A-10 RWR71Z 2 0.499- 6.04k 0.1 - 6.04k 0.90 ESS-2B RWR89S 3 0.499 - 4.12k 0.1 - 4.12k 0.70 ESW-2B RWR89W 3 0.499 - 4.12k 0.1 - 4.12k 0.70 ESN-2B RWR89N 3 0.499 - 2.05k 0.1 - 2.05k 0.70 ESN-2B-10 RWR89Z 3 0.499 - 2.05k 0.1 - 2.05k 0.70 ESS-5 RWR74S 5 0.499 - 12.1k 0.1 - 12.1k 4.2 ESW-5 RWR74W 5 0.499 - 12.1k 0.1 - 12.1k 4.2 ESN-5 RWR74N 5 0.499 - 6.04k 0.1 - 6.04k 4.2 ESN-5-10 RWR74Z 5 0.499 - 6.04k 0.1 - 6.04k 4.2 EGS-10-80 RWR84S 7 0.499 - 12.4k 0.1 - 12.4k 3.6 EGW-10 RWR84W 7 0.499 - 12.4k 0.1 - 12.4k 3.6 EGN-10-80 RWR84N 7 0.499- 6.19k 0.1 - 6.19k 3.6 EGN-10-10 RWR84Z 7 0.499- 6.19k 0.1 - 6.19k 3.6 ESS-10 RWR78S 10 0.499 - 39.2k 0.1 - 39.2k 9.0 ESW-10 RWR78W 10 0.499 - 39.2k 0.1 - 39.2k 9.0 ESN-10 RWR78N 10 0.499- 19.6k 0.1 - 19.6k 9.0 ESN-10-10 RWR78Z 10 0.499- 19.6k 0.1 - 19.6k 9.0 ORDERING INFORMATION RWR74 S 49R9 F M MILITARY TERMINAL WIRE RESISTANCE TOLERANCE FAILURE TYPE AND WINDING RATE www.vishay.com For technical questions, contact ww2bresistors vishay.com Document Number 30203 126 Revision 23-Sep-02ESS, ESW, ESN, EGS, EGW, EGN Wirewound Resistors, Military/Established Reliability Vishay Dale MIL-PRF-39007 Qualified, Type RWR, R Level DIMENSIONS MIL-PRF-39007 DIMENSIONS - in inches millimeters 1.50 38.10 * A Min. MODEL A B C RWR81 0.250 0.031 .085 0.020 0.020 0.0015 6.35 0.787 2.16 0.508 0.508 0.038 RWR82 0.312 0.016 0.078 + 0.016 - 0.031 0.020 0.0015 C 7.92 0.406 1.98 + 0.406 - 0.787 0.508 0.038 B RWR80 0.406 0.031 0.094 0.031 0.020 0.0015 *On some standard reel pack methods, the leads may be 10.31 0.787 2.39 0.787 0.508 0.038 trimmed to a shorter length than shown. RWR71 0.812 0.062 0.187 0.031 0.032 0.002 20.62 1.58 4.75 0.787 0.813 0.051 MATERIAL SPECIFICATIONS RWR89 0.560 0.062 0.187 0.031 0.032 0.002 Element: Copper-nickel alloy or nickel-chrome alloy, 14.22 1.58 4.75 0.787 0.813 0.051 depending on resistance value RWR74 0.875 0.062 0.312 0.031 0.040 0.002 Core: Ceramic, Beryllium oxide, steatite or alumina, 22.23 1.58 7.92 0.787 1.02 0.051 depending on power requirement RWR84 0.875 0.062 0.312 0.031 0.040 0.002 Coating: Special high temperature silicone 22.23 1.58 7.92 0.787 1.02 0.051 Terminal and Winding: The terminal and the winding RWR78 1.780 0.062 0.375 0.031 0.040 0.002 are identified by a letter symbol in the military type 45.21 1.58 9.53 0.787 1.02 0.051 designation. Military Symbol: S = Solderable, inductively wound 120 W = Weldable, inductively wound N = Solderable, non-inductively wound 100 Z = Weldable, non-inductively wound Terminals: Solderable - Tinned Copperweld 80 Weldable - Bare Nickel per MIL-STD-1276, Type N-1 End Caps: Stainless Steel Part Marking: Source Code, JAN, Military PIN, 60 Date/Lot Code 40 APPLICABLE MIL-SPECIFICATION MIL-PRF-39007: This is the military specification 20 covering axial lead established reliability power wirewound resistors. 0 Vishay Dale ESS, ESW, EGS, EGW, ESN and EGN -65-50 0 50 150 250 25 resistors meet or exceed the electrical, environmental AMBIENT TEMPERATURE IN C and dimensional requirements of this specification. Derating TECHNICAL SPECIFICATIONS PARAMETER UNIT ESS, ESW, ESN, EGS, EGW, EGN 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 Dielectric Withstanding Voltage V 500 minimum for 2 watt and smaller, 1000 minimum for 3 watt and larger AC Short Time Overload - 5 x rated power for 5 seconds for 3 watt size and smaller, 10 x rated power for 5 seconds for 5 watt size and greater 1/2 Maximum Working Voltage V (P x R) Insulation Resistance 1000 Megohm minimum dry, 100 Megohm minimum after moisture test Terminal Strength lb 5 minimum for 2 watt and smaller, 10 minimum for 3 watt and larger Solderability - Meets requirements of ANSI J-STD-002 Operating Temperature Range C - 65/+ 250 PERFORMANCE TEST CONDITIONS OF TEST TEST LIMITS Thermal Shock MIL-STD-2.2, Method 303 (0.2% + 0.005 ) R Short Time Overload 5 x rated power (RWR71, 80, 81, 89, 82), 10 x rated power (RWR74, 78, 84) for 5 seconds (0.2% + 0.005 ) R Dielectric Withstanding Voltage 500Vrms (RWR80, 81, 82), 1000Vrms (RWR71, 74, 78, 84, 89), 1 minute duration (0.1% + 0.005 ) R Low Temperature Storage - 65C for 24 hours (0.1% + 0.005 ) R High Temperature Exposure 250C for 2000 hours (1.0% + 0.005 ) R* Moisture Resistance MIL-STD-202, Method 106 (0.2% + 0.005 ) R Shock, Specified Pulse MIL-STD-202, Method 205, Condition C (0.1% + 0.005 ) R Vibration, High Frequency MIL-STD-202, Method 204, Condition D (0.1% + 0.005 ) R Load Life 2000 hours at rated power, + 25C, 1.5 hours ON, 0.5 hours OFF (0.5% + 0.005 ) R Extended Life 10,000 hours at rated power, + 25C, 1.5 hours ON, 0.5 hours OFF (1.0% + 0.005 ) R MIL-STD-202, Method 211, Condition A and C Terminal Strength (0.1% + 0.005 ) R 5 pound (RWR80, 81, 82), 10 pound (RWR71, 74, 78, 84, 89) *For resistance values above 100 ohms, Test Limit is 1.0%. Document Number 30203 For technical questions, contact ww2bresistors vishay.com www.vishay.com Revision 23-Sep-02 127 RATED POWER IN %