MODEL RS VELEy Wirewound Resistors DALE, Military, MIL-R-26 Qualified, Type RW Precision Power, Silicone Coated and Molded FEATURES * Complete welded construction * High-temperature silicone coating and molding _ + Meets applicable requirements of MIL-R-26 , + Available in non-inductive styles (Type NS) with Aryton-Perry winding for lowest reactive components * Over 44 million unit-hours of testing with no catastrophic failures have proven failure rate of less than 0.0066% per 1000 hours (at 60% confidence) with full rated power at 25C. A failure is defined as + 1% resistance change. * Coated models: RS-2, 2B, 2C, 5, 7 and 10. Molded models: RS-1/8 thru RS-1A. RESISTANCE RANGE (Ohms) MAXIMUM * DALE RATING _ RATING MIL. Range shown in bold face WORKING U v DALE MIL-R-26 05% 3% & 5%, 1%, VOLTAGE _ WEIGHT MODEL TYPE thru 5% 5% 05% 1% 25% 3%, 5% u Vv (Grams) oO RS-1/8 -125W. 1-1.4K 85 _ A5 ul RS-1/4 = AW _ 1-1k .499-1k .499.3.4k 1-3.4k 20 21 a RS-1/2 = 75W 1-1.3k .499-1.3k .499-4.9k -1-4.9k 29 = 23 = RS-1A TOW _ 1-2.74k .499-2.74k .499-10.4k 1-10.4k 52 a 34 Rw70 Law = = -499-2.74k .499-2.74k 1:2.74k = _ _ RS-2 4.0W 5.50 W -499-12.7k .499-12.7k .1-47.1k 1-47.1k 210 250 2.10 RS-2B _ 3.0 W 3.75W -499-6.5k -499-6.5k .1-24.5k 1-24.5k 140 157 70 Rw79 3.0W = .499-6.49k -1-6.49k -1-6.49k oo RS-2C = 2.5W 3.25 W .499-8.6k .499-8.6k .1-32.3k 1-32.3k 138 157 1.6 RS-2C-17 2.5W 3.25 W .499-8.6k -499-8.6k .1-32.3k .1-32.3k 138 157 1.6 RS-2C-23" _ 2.5W 3.25 W _ _ 1-19.9k 130 150 1.6 RW69 2.5 W 3.25 W .1-2.0k 130 150 1.6 a RS-5** 5.0W 6.50 W -499-25.7k .499-25.7k .1-95.2k .1-95.2k 360 410 4.2 E RS-5-69 _ 5.0W 6.50W .499-24.5k .499-24.5k .1-91.0k .1-91.0k 350 400 4.2 oO RW74 5.0 W = 499-24.3k 1-24.3k 1-24,3k = = = RS-5-70"* _ 5.0W 6.50 W a _ .1-58.5k 320 365 4.2 RW67 5.0W 6.50 W. i = = .1-8.5k 320 365 42 RS-7 = 7.0W. 9.00 W -499-41.4k -499-41.4k .1-154k 1-154k 504 576 47 RS-10 = 10.0W 13.00 W. .499-73.4k .499-73.4k 1-273k 1-273k 858 978 9.0 RS-10-38 10.0W 13.00 W .499-71.5k .499-71.5k .1-265k .1-265k 846 966 9.0 RW78 10.0W -499-71.5k .1-71.5k 1-71.5k _ RS-10-39"* _ 10.0W 13.00 W _ _ _ .1-167K 765 875 9.0 RW68 10.0W 13.00 W _ _ _ 1-20k 765 875 9.0 * Maximum working voltage determined at .0008" diameter wire resistance values. ** Standard tolerance is + 5% .1 ohm and above, + 10% below 1 ohm. 3% available. ** Values available down to .005 ohm in 1%, 3% and 5% tolerance and TC down to 5Oppm at .22 ahm/20ppm at .5 ahm (RS-2B-32) ELECTRICAL SPECIFICATIONS Terminal Strength: 5 pound pull test = RS-1/8 thru RS-1A Resistance Tolerance: + 5%, + 3%, + 2% + 1%, + .5%, models. 10 pound pull test = all others. + 25% +.1%. + 05%. MATERIAL SPECIFICATIONS Temperature Coefficient: Core: Ceramic, steatite or alumina, depending on physical size. + SOPPM/*C, below 1 ohm. Element: Copper-nickel alloy or nickel-chrome alloy + 5OPPM/C, 1 ohm - 9.9 ohm. depending on resistance value. + 20PPM/C, 10 ohm and above. (Consult factory for special T.C. requirements.) Dielectric Strength: 500 VAC for RS-1/8 through RS-1A models. 1000 volts for all others. End Caps: Stainless steel. Coating: Special high temperature silicone. Standard Terminals: Tinned Copperweld. Insulation Resistance: 1000 Megohm minimum dry. Weldable Leads: The following weldable lead materials are 100 Megohm minimum after moisture test. available from Dale on a standard stocking basis and can be Short Time Overload: 5 seconds at 5 times rated power for Specified by adding the dash number shown below tothe _ 3.25 watt size and smaller. 5 seconds at 10 times rated standard part number. Consult factory for charges on special power for 4 watt size and larger. lead materials. MECHANICAL SPECIFICATIONS Grade A Nickel, untinned -53 (Example: RS-1A-53). Solderability: MIL-R-26 Type - Meets requirements of Gold-plated Dumet (50 microinch) -52 (Example: RS-1A-52). MIL-STD-202, Method 208. Standard RS (Non-MIL Styles)-Deviations for RS-1/8: Endcaps will be nicket-silver alloy and 60/40 electro tin plated terminals to facilitate soldering. terminals will be tinned copper. DRALORIC ELECTRONIC GMBH, Geheimrat-Rosenthal-Str. 100, 95100 Selb, Germany * Tel: (0)9287/710 * Fax: (0)9287/70435 48MODEL RS [Numbers in brackets indicate millimeters] TEST DALE MAXIMUM Coated Mode! ja 9 pe BTL Temperature Coefficient + 90PPM/C, below 12 | Y + SOPPM/C, 1Q-9.92 _~__s + 20PPM/C, 109 and above f| 4 D Thermal Shock + (.2% + .05Q) AR < g 4 + 002 [.051} Short Time Overload + (.2% + .05Q) AR MAX. Dielectric + (.1% + .05Q) AR Moulded Model Low Temperature Storage + (.2% + .05Q) AR A ~~ 50 (38.10) High Temperature Exposure + (.5% +.05Q) AR | | y : Moisture Resistance + (.2% + .05Q) AR _! Shock + (.1% + .05Q) AR - 4A Vibration + (1% + .05Q) AR . 002 1.05 4 Load Life + (5% + .05Q) AR c Terminal Strength + (.1% + .05Q) AR MODEL A B (Max.) c D * All AR figures shown are maximum, based on units with an initial tolerance of 1% and maximum operating temperature of 275C. RS-1/8 155 = 015 _ .065 = .015 .020 [3.94 + 381] {1.65 = 381] [508] APPLICABLE MIL SPECIFICATIONS @ AS-14 ease 381] ~~ (P98 * 31] (208) MIL-R-26E: Designed especially for precision and non-precision a : : : power wirewound resistors. The RS series meet the requirements of Q RS-1/2 2312+ 015 078 + .015 020 this specification as well as the older MIL-R-26C and MIL-R-23379 = (7.92 = 381] {1.98 + 384] [508] iF aati : i Fett : specifications. However, this does not imply qualification. Contact RS-1A 422 + 015 110+ .015 .020 factory for latest Government QPL information. [10.72 381] [2.79 + 381] [.508] SPECIAL MODIFICATIONS RS-2 i oon : ren 11943} (38 : es (P02) 1. Terminals can be supplied in any commercial material with RS-2B 560 + .062 0.622 187 x .031 032 Several type finishes. " (14222157) [1580] [4.75 787] [813] 2. Terminal lengths and diameters can be varied. RS-26 500 + 062 0.593 218 + .031 040 3. Various elements available for special T.C. (12.70 + 1.57] [15.06] (5.54 + .787] {1.02} 4. Special configuration available on request. RS-2C-17 500 + .062 0.593 218+ .031 .032 5. Tolerances available to .01% on most models. S00 (12.70 + 1-57) [15.06] [5.54 + 787] [813] 6. Special matching available (T.C. and tolerance). RS-2C-23 500 = .062 0.593 218 + .031 .032 . . [12.70 + 1.57] [15.06] [5.54 + .787] [.813} NS - NON-INDUCTIVE o ASS 875 + 062 10 312 = 031 040 Models of equivalent physical and electrical specifications Zi [22.23 + 1.57] [25.4] (7.92 + .787] [1.02] are available with non-inductive (Aryton-Perry) winding. S AS-5-69 875+ 062 0.937 312.031 040 They are identified by substituting the letter N for R in the part number 6 [22.23 + 1.57] (23.80] [7.92 + .787| [1.02] (NS-5, for example). Four conditions apply: RS-5-70 875 + .062 1.0 312+ .031 040 1. For NS models, divide maximum resistance values by two. [22.23 + 1.57] [25.4] [7.92 + .787] [1.02] 2. For NS models, multiply maximum working voltage by .707. RS-7 1.22 + 062 1.28 312 +031 -040 3. For NS models, maximum weights may slightly exceed [30.94 + 1.57] [32.54] (7.92 + .787] [1.02] those shown on low values. g gmy RS-10 1.78 = .062 1.87 .375 + .031 .040 . 7 M1 (45.21 2 1.57] (47.50) (9.53 787] [1.02] 4. Body O.D. on NS-2C may exceed that of the RS-2C by .010" [.254]. RS-10-38 1.78 + .062 1.84 .375 + .031 .040 NS-1/8 NS-1/2 NS-2 NS-2C NS-7 (45.21 + 1.57] [46.79] [9.53 + .787] [1.02] NS-1/4 NS-1A NS-2B NS-5 NS-10 RS-10-39 1.78 = 062 1.87 375 +031 040 POWER RATING 45.212157} [47.50] (9.53 = .787] [1.02] Dale RS models have two power ratings, depending on operating * NOTE: RS-1/8 terminal length will be 1.0 [25.4] minimum. temperature and stability requirements. CHARACTERISTIC U Z 1. 275C maximum hotspot temperature. Dale RS coated resistors have an operating temperature range 2. .5% maximum AR in 2000 hour load life. of - 55C to + 350C. Dale RS molded resistors have an operating CHARACTERISTIC V temperature range of - 55C ta + 275C. They must be derated at 14. 350C maximum hotspot temperature. high ambient temperatures according to the curves below. 2. 3% maximum AR in 2000 hour load life 120 : : [ag w = 400 2 a0 i 60 Dale = 40 CHAR. U Model o 20 - Value x 0 Tolerance 25 75 4125 175 225275 350 Date code AMBIENT TEMP. DEG. CENTIGRADE CHARACTERISTIC U: Coated or molded resistors are available in any tolerance. RS-1A 40 1% CHARACTERISTIC V: MODEL RESISTANCE TOLERANCE Coated resistors are available in 3% and 5% tolerance. DRALORIC ELECTRONIC GMBH, Geheimrat-Rosenthal-Str. 100, 95100 Selb, Germany * Tel: (0)9287/710 * Fax: (0)9287/70435 49