RW Military www.vishay.com Vishay Dale Wirewound Resistors, Military, MIL-PRF-26 Qualified, Type RW, Precision Power, Silicone Coated, Axial Lead FEATURES • • • • High temperature coating (> 350 °C) Complete welded construction Qualified to MIL-PRF-26 Excellent stability in operation (typical shift < 0.5 %) resistance STANDARD ELECTRICAL SPECIFICATIONS VISHAY REFERENCE MODEL POWER RATING P25 °C W CHARACTERISTIC U POWER RATING P25 °C W CHARACTERISTIC V RW81 G001...380 1.0 - 0.1 to 1K 0.1, 0.5, 1 0.20 RW70 RS01A...300 1.0 - 0.1 to 2.74K 0.1, 0.5, 1 0.34 RW80 G003...380 2.0 - 0.1 to 2.74K 0.1, 0.5, 1 0.34 RW79 RS02B...300 3.0 - 0.1 to 6.49K 0.1, 0.5, 1 0.70 RW69 RS02C...23 - 3.0 0.1 to 2.0K 5, 10 1.6 RW74 RS005...69 5.0 - 0.1 to 24.3K 0.1, 0.5, 1 4.2 RW67 RS005...70 - 6.5 0.1 to 8.2K 5, 10 4.2 RW78 RS010...38 10.0 - 0.1 to 71.5K 0.1, 0.5, 1 9.0 RW68 RS010...39 - 11.0 0.1 to 20K 5, 10 9.0 MILITARY MODEL RESISTANCE RANGE TOLERANCE ±% WEIGHT (typical) g Note • RW67, RW68, RW69 available tolerance for these MIL parts is ± 5 % for 1 and above, ± 10 % below 1 TECHNICAL SPECIFICATIONS PARAMETER UNIT RW RESISTOR CHARACTERISTICS 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 °C Characterisitic U = - 65 to + 250, characteristic V = - 65 to + 350 Temperature Coefficient Operating Temperature Range MILITARY PART NUMBER INFORMATION Military Part Numbering example: RW80U49R9FB12 R W 8 0 U 4 9 R 9 F B 1 2 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 % 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 Tolerance for “V” Characteristic is not listed and is as specified by MIL-PRF-26 Revision: 23-May-13 Document Number: 30281 1 For technical questions, contact: [email protected] 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 RW Military www.vishay.com Vishay Dale DIMENSIONS in inches [millimeters] D B MATERIAL SPECIFICATIONS Element: Copper-nickel alloy or nickel-chrome alloy, depending on resistance value Core: Ceramic, steatite or alumina, depending on physical size End Caps: Stainless steel C D RW81 0.250 ± 0.031 [6.35 ± 0.787] 0.281 0.085 ± 0.020 0.020 ± 0.002 [7.14] [2.16 ± 0.508] [0.508 ± 0.051] RW70 RW80 0.406 ± 0.031 [10.31 ± 0.787] 0.437 0.094 ± 0.031 0.020 ± 0.002 [11.10] [2.39 ± 0.787] [0.508 ± 0.051] RW79 0.560 ± 0.062 [14.22 ± 1.57] 0.622 0.187 ± 0.031 0.032 ± 0.002 [15.80] [4.75 ± 0.787] [0.813 ± 0.051] RW69 0.500 ± 0.062 [12.70 ± 1.57] 0.593 0.218 ± 0.031 0.032 ± 0.002 [15.06] [5.54 ± 0.787] [0.813 ± 0.051] RW74 RW67 0.875 ± 0.062 [22.23 ± 1.57] 1.0 0.312 ± 0.031 0.040 ± 0.002 [25.4] [7.92 ± 0.787] [1.02 ± 0.051] RW78 1.78 ± 0.062 [45.21 ± 1.57] 1.87 0.375 ± 0.031 0.040 ± 0.002 [47.50] [9.53 ± 0.787] [1.02 ± 0.051] Coating: Special high temperature silicone Standard Terminals: 60/40 Sn/Pb coated Copperweld® B (2) (max.) A C Note (1) On some standard reel pack methods, the leads may be trimmed to a shorter length than shown RW68 1.875 + 0.063 - 0.125 1.94 0.344 ± 0.094 0.040 ± 0.002 [47.63 + 1.60 - 3.18] [49.28] [8.74 ± 2.39] [1.02 ± 0.051] Note (2) B (max.) dimension is clean lead to clean lead MARKING DERATING MODELS: RW67, RW68, RW69 Characteristic U Characteristic V Tolerance code: B = 01 %, 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 RATED POWER IN % MODELS: RW70, RW74, RW78, RW79, RW80, RW81 DIMENSIONS in inches [millimeters] MILITARY MODEL 1.50 [38.10] (1) min. A 120 100 80 60 CHAR. V 40 20 0 - 65 - 50 CHAR. U 0 50 25 150 250 350 AMBIENT TEMPERATURE IN °C 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 5 x 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 Revision: 23-May-13 Document Number: 30281 2 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. 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