RH, NH Vishay Dale Wirewound Resistors, Military, MIL-PRF-18546 Qualified, Type RE, Aluminum Housed, Chassis Mount FEATURES * Molded construction for total environmental protection Pb-free Available * Complete welded construction * Meets applicable requirements of e4 MIL-PRF-18546 * Available in non-inductive styles (type NH) with Aryton-Perry winding for lowest reactive RoHS* COMPLIANT components * Mounts on chassis to utilize heat-sink effect * Excellent stability in operation (< 1 % change in resistance) STANDARD ELECTRICAL SPECIFICATIONS GLOBAL HISTORICAL MIL-PRF18546 MODEL MODEL TYPE POWER RATING P25 C W RESISTANCE RANGE MIL. RANGE SHOWN IN BOLD FACE WEIGHT (Typical) g DALE MILITARY 0.05 %, 0.1 % 0.25 % 0.5 % 1 %, 2 %, 5 % 0.5 - 6.75K 0.1 - 8.6K 0.05 - 8.6K 0.02 - 24.5K 7.5 (5) 5 3 RE60G 0.10 - 3.32K 0.5 - 2.32K 0.1 - 3.27K 0.05 - 3.27K 0.05 - 12.75K 7.5 (5) 5 3.3 NH005 NH-5 RE60N 1.0 - 1.65K 0.5 - 12.7K 0.1 - 16.69K 0.05 - 16.69K 0.01 - 47.1K RH010 RH-10 12.5 (10) 10 6 RE65G 0.10 - 5.62K 0.5 - 4.45K 0.1 - 5.54K 0.05 - 5.54K 0.05 - 23.5K 12.5 (10) 10 8.8 NH010 NH-10 RE65N 1.0 - 2.8K 0.5 - 25.7K 0.1 - 32.99K 0.05 - 32.99K 0.01 - 95.2K RH025 RH-25 25 20 13 RE70G 0.10 - 12.1K 0.5 9.09K 0.1 12.8K 0.05 12.8K 0.05 47.6K NH025 NH-25 25 20 16.5 RE70N 1.0 - 6.04K 0.5 - 73.4K 0.1 - 96K 0.05 - 96K 0.01 - 273K 50 30 28 RH050 RH-50 RE75G 0 .10 - 39.2K 0.5 26K 0.1 36.7K 0.05 36.7K 0.05 136K NH050 NH-50 50 30 35 RE75N 1.0 - 19.6K 0.5 - 90K 0.1 - 90K 0.05 - 90K 0.05 - 90K RH100 RH-100 100 75 350 RE77G 0.05 - 29.4K 0.5 37.5K 0.1 37.5K 0.05 37.5K 0.05 37.5K 100 75 385 NH100 NH-100 RE77N 1.0 - 14.7K 0.5 - 116K 0.1 - 116K 0.05 - 116K 0.05 - 116K RH250 RH-250 250 120 630 RE80G 0.10 - 35.7K 0.5 48.5K 0.1 48.5K 0.05 48.5K 0.05 48.5K NH250 NH-250 250 120 690 RE80N 1.0 - 17.4K Note: Figures in parentheses on RH-5 and RH-10 indicate wattage printed on parts, new construction allows these resistors to be rated at higher wattage but will only be printed with the higher wattage on customer request. RH005 RH-5 GLOBAL PART NUMBER INFORMATION New Global Part Numbering: RH0054R125FC02 (preferred part number format) R H 0 0 5 4 R 1 2 5 F C 0 2 GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING SPECIAL RH005 (See "Standard Electrical Specifications" table above for additional P/N's) L = Milliohm R = Decimal K = Thousand 8L000 = 0.008 15R00 = 15 A = 0.05 % B = 0.1 % C = 0.25 % D = 0.5 % F = 1.0 % E02 = Lead (Pb)-free, Card Pack (RH005 - RH050) E01 = Lead (Pb)-free, Skin Pack (RH100 & RH250) Lead (Pb)-free is not available on RE military type (Dash Number) (up to 3 digits) From 1 - 999 as applicable C02 = Tin/Lead, Card Pack (RH005 - RH050) J01 = Tin/Lead, Skin Pack (RH100 & RH250) Historical Part Number example: RH-5 4.125 1 % C02 (will continue to be accepted) RH-5 4.125 1% C02 HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING * Pb containing terminations are not RoHS compliant, exemptions may apply www.vishay.com 166 For technical questions, contact: ww2bresistors@vishay.com Document Number: 30201 Revision: 11-Jul-07 RH, NH Wirewound Resistors, Military, MIL-PRF-18546 Qualified, Type RE, Aluminum Housed, Chassis Mount Vishay Dale DIMENSIONS D C A RH-5, -10, -25, -50 NH-5, -10, -25, -50 F E M N G J B P K MODEL H L DIMENSIONS in millimeters [inches] A B C D E F G H J K L M N P RH-5 NH-5 11.28 12.45 15.24 0.127 0.127 0.7871 [0.444 [0.490 [0.600 0.005] 0.005] 0.03] 28.58 8.48 16.41 8.13 1.65 3.38 1.98 2.36 1.98 1.27 6.76 1.57 0.381 0.381 0.381 0.254 0.254 0.254 0.127 0.381 0.127 1.57 [1.125 [0.334 [0.646 [0.320 [0.065 [0.133 [0.078 [0.093 [0.078 [0.050 [0.266 0.062] 0.015] 0.015] 0.015] 0.010] 0.010] 0.010] 0.005] 0.015] 0.005] 0.062] RH-10 NH-10 2.36 2.39 2.59 2.16 7.92 14.27 15.88 19.05 34.93 10.67 20.32 9.91 1.91 4.19 0.127 0.127 0.787 1.57 0.381 0.381 0.381 0.254 0.254 0.254 0.127 0.381 0.127 1.57 [0.562 [0.625 [0.750 [1.375 [0.420 [0.800 [0.390 [0.075 [0.165 [0.093 [0.094 [0.102 [0.085 [0.312 0.005] 0.005] 0.031] 0.062] 0.015] 0.015] 0.015] 0.010] 0.010] 0.010] 0.005] 0.015] 0.005] 0.062] RH-25 NH-25 4.37 3.18 2.92 2.16 11.13 18.26 19.84 26.97 49.23 13.97 27.43 13.87 1.91 5.87 0.127 0.127 0.787 1.57 .381 0.381 0.381 0.254 0.254 0.254 0.127 0.381 0.127 1.57 [0.719 [0.781 [1.062 [1.938 [0.550 [1.080 [0.546 [0.075 [0.231 [0.172 [0.125 [0.115 [0.085 [0.438 0.005] 0.005] 0.031] 0.062] 0.015] 0.015] 0.015] 0.010] 0.010] 0.010] 0.005] 0.015] 0.005] 0.062] RH-50 NH-50 4.98 3.18 2.72 2.16 11.13 39.67 21.44 49.99 70.64 16.00 28.96 15.49 2.24 6.60 0.127 0.127 0.787 1.57 0.381 0.381 0.381 0.254 0.254 0.254 0.127 0.381 0.127 1.57 [1.562 [0.844 [1.968 [2.781 [0.630 [1.140 [0.610 [0.088 [0.260 [0.196 [0.125 [0.107 [0.085 [0.438 0.005] 0.005] 0.031] 0.062] 0.015] 0.015] 0.015] 0.010] 0.010] 0.010] 0.005] 0.015] 0.005] 0.062] DIMENSIONS RH-100, NH-100 Nickel Plated Brass Nut Stainless Steel Stud 88.90 0.787 [3.50 0.031] 46.02 0.787 [1.812 0.031] 28.58 0.787 [1.125 0.031] 71.42 0.787 [2.812 0.031] 44.45 0.787 [1.75 0.031] 57.15 0.254 [2.25 0.010] 9.52 0.787 [0.375 0.031] 69.85 0.254 [2.75 0.010] 139.14 2.36 [5.478 0.093] 12 - 24 UNC-2A Thd. Typ. RH-250, NH-250 4.78 0.254 [0.188 0.010] Dia. Typ. 114.30 0.787 [4.50 0.031] Nickel Plated Brass Nut Stainless Steel Stud 4.78 0.787 [0.188 0.031] Typ. 25.12 0.787 [0.989 0.031] 1/4 - 20 UNC-2A Thd. Typ. 55.58 0.787 [2.188 0.031] 63.50 0.254 [2.50 0.010] 22.23 0.254 [0.875 0.010] 76.20 0.254 [3.0 0.010] 98.42 0.254 [3.875 0.010] 177.80 2.36 [7.0 0.093] Document Number: 30201 Revision: 11-Jul-07 19.56 0.381 [0.770 0.015] 53.98 0.787 [2.125 0.031] 31.75 1.575 [1.25 0.062] 76.20 0.787 [3.0 0.031] 7.92 0.787 [0.312 0.031] 4.78 0.254 [0.188 0.010] Dia. Typ. 31.75 1.575 [1.25 0.062] For technical questions, contact: ww2bresistors@vishay.com 6.35 0.787 [0.250 0.031 Typ.] 24.26 0.381 [0.955 0.015] www.vishay.com 167 RH, NH Wirewound Resistors, Military, MIL-PRF-18546 Qualified, Type RE, Aluminum Housed, Chassis Mount Vishay Dale TECHNICAL SPECIFICATIONS PARAMETER Temperature Coefficient UNIT RH RESISTOR CHARACTERISTICS ppm/C 100 for 0.1 to 0.99 , 50 for 1 to 9.9 , 20 for 10 and above VAC 1000 for RH/5, RH-10 and RH/25, 2000 for RH/50, 4500 for RH/100 and RH/250 Short Time Overload - 5 x rated power for 5 seconds Maximum Working Voltage V Insulation Resistance (P x R)1/2 10 000 M minimum dry, 1000 M minimum after moisture test Terminal Strength lb 5 minimum for RH-5 and RH-10, 10 minimum for all others - MIL-PRF-18546 Type - Meets requirements of ANSI J-STD-002 C - 55/+ 250 Dielectric Withstanding Voltage Solderability Operating Temperature Range POWER RATING Vishay RH resistor wattage ratings are based on mounting to the following heat sink: RH-5 and RH-10: 4" x 6" x 2" x 0.040" thick aluminum chassis (129 sq. in. surface area) RH-25: 5" x 7" x 2" x 0.040" thick aluminum chassis (167 sq. in. surface area) RH-50: 12" x 12" x 0.059" thick aluminum panel (291 sq. in. surface area) RH-100 and RH-250: 12" x 12" x 0.125" thick aluminum panel (294 sq. in. surface area) AMBIENT TEMPERATURE DERATING RATED POWER IN % Derating is required for ambient temperatures above 25 C, see the following graph. Curves A, B, C apply to operation of unmounted resistors. Curve D applies to all types when mounted to specified heat sink. A = RH-5 and RH-10 size resistor, unmounted B = RH-25 size resistor, unmounted C = RH-50, RH-100 and RH-250 size resistor, unmounted D = All types mounted to recommended aluminum heat sink 120 100 80 D A 60 B C 40 20 0 - 55 - 50 0 50 150 25 AMBIENT TEMPERATURE IN C Derating is also required when recommended heat sink area is reduced. A = RH-5 and RH-10 size resistor B = RH-25 size resistor C = RH-50, RH-100 and RH-250 size resistor RATED POWER IN % Derating REDUCED HEAT SINK DERATING: 250 100 90 80 A 70 60 B 50 40 C 30 20 10 0 0 20 Heat Sink Derating www.vishay.com 168 For technical questions, contact: ww2bresistors@vishay.com 40 60 80 100 % OF RECOMMENDED HEAT SINK AREA Document Number: 30201 Revision: 11-Jul-07 RH, NH Wirewound Resistors, Military, MIL-PRF-18546 Qualified, Type RE, Aluminum Housed, Chassis Mount Vishay Dale MATERIAL SPECIFICATIONS SPECIAL MODIFICATIONS Element: Copper-nickel alloy or nickel-chrome alloy, depending on resistance value A number of special modifications to the aluminum housed resistor style are available upon request. Special modifications include: Core: Ceramic, steatite or alumina, depending on physical size Encapsulant: Silicone molded construction * Terminal configurations and materials * Resistance values and tolerances Housing: Aluminum with hard anodic coating * Low resistance temperature coefficient (RTC) End Caps: Stainless steel Standard Terminals: For RH-5 through RH-50 size terminal finish - Tin/lead is 60/40 Sn/Pb w/Nickel underplate & Lead (Pb)-free is Ni/Pd/Au, finish is on copper clad steel core terminal. For RH-100 & RH-250 terminals are threaded stainless steel. * Housing configuration * Threaded mounting holes * Preconditioning and other additional testing Note: Military (RE) parts are only available with tin/lead finish APPLICABLE MIL SPECIFICATIONS Part Marking: DALE, Model, Wattage, Value, Tolerance, Date Code MIL-PRF-18546 is the military specification covering aluminum housed, chassis mount, power resistors. VISHAY RH and NH resistors are listed as qualified on the MIL-PRF-18546 QPL. NH NON-INDUCTIVE Models of equivalent physical and electrical specifications are available with non-inductive (Aryton-Perry) winding. They are identified by substituting the letter N for R in the model number (NH-5, for example). PERFORMANCE TEST CONDITIONS OF TEST TEST LIMITS Thermal Shock Rated power applied until thermally stable, then a minimum of 15 minutes at - 55 C (0.5 % + 0.05 ) R Short Time Overload 5 x rated power for 5 seconds (0.5 % + 0.05 ) R Dielectric Withstanding Voltage 1000 Vrms for RH-5, RH-10 and RH-25; 2000 Vrms for RH-50 4500 Vrms for RH-100 and RH-250; duration one minute (0.2 % + 0.05 ) R Temperature 250 C for 2 hours (0.5 % + 0.05 ) R Moisture Resistance MIL-STD-202 Method 106, 7b not applicable (1.0 % + 0.05 ) R Shock, Specified Pulse MIL-STD-202 Method 213, 100 g's for 6 ms, 10 shocks (0.2 % + 0.05 ) R Vibration, High Frequency Frequency varied 10 to 2000 Hz, 20 g peak, 2 directions 6 hours each (0.2 % + 0.05 ) R Load Life 1000 hours at rated power, + 25 C, 1.5 hours "ON", 0.5 hours "OFF" (1.0 % + 0.05 ) R Terminal Strength 30 second, 5 pound pull test for RH-5 and RH-10, 10 pound pull test for other sizes, (0.2 % + 0.05 ) R torque test - 24 pound inch for RH-100 and 32 pound inch for RH-250 Document Number: 30201 Revision: 11-Jul-07 For technical questions, contact: ww2bresistors@vishay.com www.vishay.com 169