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RH, NH
Vishay Dale
Wirewound Resistors, Military, MIL-PRF-18546 Qualified, Type RE, Aluminum Housed, Chassis Mount
FEATURES
* Molded construction for total environmental
protection * Complete welded construction * Meets applicable requirements of MIL-PRF-18546 * Available in non-inductive styles (type NH) with Aryton-Perry winding for lowest reactive components * Mounts on chassis to utilize heat-sink effect * Excellent stability in operation (< 1 % change in resistance)
Pb-free Available
e4
RoHS*
COMPLIANT
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL HISTORICAL MIL-PRF18546 MODEL MODEL TYPE RH005 NH005 RH010 NH010 RH025 NH025 RH050 NH050 RH100 NH100 RH250 NH250 RH-5 NH-5 RH-10 NH-10 RH-25 NH-25 RH-50 NH-50 RH-100 NH-100 RH-250 NH-250 RE60G RE60N RE65G RE65N RE70G RE70N RE75G RE75N RE77G RE77N RE80G RE80N POWER RATING P25 C W DALE RESISTANCE RANGE MIL. RANGE SHOWN IN BOLD FACE 0.25 % 0.5 % 1 %, 2 %, 5 % 0.1 - 8.6K 0.05 - 8.6K 0.02 - 24.5K 0.10 - 3.32K 0.1 - 3.27K 0.05 - 3.27K 0.05 - 12.75K 1.0 - 1.65K 0.1 - 16.69K 0.05 - 16.69K 0.01 - 47.1K 0.10 - 5.62K 0.1 - 5.54K 0.05 - 5.54K 0.05 - 23.5K 1.0 - 2.8K 0.1 - 32.99K 0.05 - 32.99K 0.01 - 95.2K 0.10 - 12.1K 0.1 - 12.8K 0.05 - 12.8K 0.05 - 47.6K 1.0 - 6.04K 0.1 - 96K 0.05 - 96K 0.01 - 273K 0 .10 - 39.2K 0.1 - 36.7K 0.05 - 36.7K 0.05 - 136K 1.0 - 19.6K 0.1 - 90K 0.05 - 90K 0.05 - 90K 0.05 - 29.4K 0.1 - 37.5K 0.05 - 37.5K 0.05 - 37.5K 1.0 - 14.7K 0.1 - 116K 0.05 - 116K 0.05 - 116K 0.10 - 35.7K 0.1 - 48.5K 0.05 - 48.5K 0.05 - 48.5K 1.0 - 17.4K WEIGHT (typical) g 3 3.3 6 8.8 13 16.5 28 35 350 385 630 690
MILITARY 0.05 %, 0.1 % 0.5 - 6.75K 7.5 (5) 5 0.5 - 2.32K 7.5 (5) 5 0.5 - 12.7K 12.5 (10) 10 0.5 - 4.45K 12.5 (10) 10 0.5 - 25.7K 25 20 0.5 - 9.09K 25 20 0.5 - 73.4K 50 30 0.5 - 26K 50 30 0.5 - 90K 100 75 0.5 - 37.5K 100 75 0.5 - 116K 250 120 0.5 - 48.5K 250 120 -
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
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
SPECIAL (Dash Number) (up to 3 digits) From 1 - 999 as applicable
GLOBAL MODEL RH005 (See "Standard Electrical Specifications" table above for additional P/N's) RH-5
RESISTANCE VALUE L = Milliohm R = Decimal K = Thousand 8L000 = 0.008 15R00 = 15
TOLERANCE CODE A = 0.05 % B = 0.1 % C = 0.25 % D = 0.5 % F = 1.0 %
PACKAGING E02 = Lead (Pb)-free, card pack (RH005 - RH050) E01 = Lead (Pb)-free, skin pack (RH100 and RH250) Lead (Pb)-free is not available on RE military type C02 = Tin/lead, card pack (RH005 - RH050) J01 = Tin/lead, skin pack (RH100 and RH250) 1% TOLERANCE CODE
Historical Part Number Example: RH-5 4.125 1 % C02 (will continue to be accepted) 4.125 RESISTANCE VALUE C02 PACKAGING
HISTORICAL MODEL
* Pb containing terminations are not RoHS compliant, exemptions may apply www.vishay.com 154 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
DIMENSIONS in inches [millimeters]
RH-5, -10, -25, -50 NH-5, -10, -25, -50
D C A M N B P K L H J F E G
Vishay Dale
MODEL
DIMENSIONS in inches [millimeters] A B C D E F G H J K L M N P
RH-5 NH-5
0.444 0.490 0.600 1.125 0.334 0.646 0.320 0.065 0.133 0.078 0.093 0.078 0.050 0.266 0.005 0.005 0.030 0.062 0.015 0.015 0.015 0.010 0.010 0.010 0.005 0.015 0.005 0.062 [2.36 [1.98 [1.27 [6.76 [11.28 [12.45 [15.24 [28.58 [8.48 [16.41 [8.13 [1.65 [3.38 [1.98 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] 0.093 0.094 0.102 0.085 0.312 0.562 0.625 0.750 1.375 0.420 0.800 0.390 0.075 0.165 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 [9.91 [1.91 [4.19 [2.36 [2.39 [2.59 [2.16 [7.92 [14.27 [15.88 [19.05 [34.93 [10.67 [20.32 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] 0.172 0.125 0.115 0.085 0.438 0.719 0.781 1.062 1.938 0.550 1.080 0.546 0.075 0.231 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 [18.26 [19.84 [26.97 [49.23 [13.97 [27.43 [13.87 [1.91 [5.87 [4.37 [3.18 [2.92 [2.16 [11.13 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] 0.196 0.125 0.107 0.085 0.438 1.562 0.844 1.968 2.781 0.630 1.140 0.610 0.088 0.260 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 [2.24 [6.60 [4.98 [3.18 [2.72 [2.16 [11.13 [39.67 [21.44 [49.99 [70.64 [16.00 [28.96 [15.49 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]
RH-10 NH-10
RH-25 NH-25
RH-50 NH-50
DIMENSIONS in inches [millimeters]
RH-100, NH-100
Nickel plated brass nut stainless steel stud 3.50 0.031 [88.90 0.787] 0.188 0.010 [4.78 0.254] Dia. typ. 1.125 0.031 [28.58 0.787] 2.25 0.010 [57.15 0.254] 12 - 24 UNC-2A Thd. typ. 0.375 0.031 [9.52 0.787] 2.75 0.010 [69.85 0.254] 5.478 0.093 [139.14 2.36] 0.188 0.010 [4.78 0.254] Dia. typ. 4.50 0.031 [114.30 0.787] 0.989 0.031 [25.12 0.787] 1.75 0.031 [44.45 0.787] 1.812 0.031 [46.02 0.787]
2.812 0.031 [71.42 0.787]
0.188 0.031 0.770 0.015 [4.78 0.787] [19.56 0.381] typ.
RH-250, NH-250
Nickel plated brass nut stainless steel stud
1/4 - 20 UNC-2A thd. typ.
2.125 0.031 [53.98 0.787]
3.0 0.031 [76.20 0.787]
1.25 0.062 [31.75 1.575] 2.50 0.010 [63.50 0.254] 0.875 0.010 [22.23 0.254] 3.0 0.010 [76.20 0.254] 3.875 0.010 [98.42 0.254] 7.0 0.093 [177.80 2.36] 0.250 0.031 [6.35 0.787] typ.
55.58 0.787 [2.188 0.031]
0.312 0.031 [7.92 0.787]
1.25 0.062 [31.75 1.575]
0.955 0.015 [24.26 0.381]
Document Number: 30201 Revision: 11-Jul-07
For technical questions, contact: ww2bresistors@vishay.com
www.vishay.com 155
RH, NH
Vishay Dale
Wirewound Resistors, Military, MIL-PRF-18546 Qualified, Type RE, Aluminum Housed, Chassis Mount
TECHNICAL SPECIFICATIONS
PARAMETER Temperature Coefficient Dielectric Withstanding Voltage Short Time Overload Maximum Working Voltage Insulation Resistance Terminal Strength Solderability Operating Temperature Range UNIT ppm/C VAC V lb C RH RESISTOR CHARACTERISTICS 100 for 0.1 to 0.99 , 50 for 1 to 9.9 , 20 for 10 and above 1000 for RH/5, RH-10 and RH/25, 2000 for RH/50, 4500 for RH/100 and RH/250 5 x rated power for 5 s (P x R)1/2 10 000 M minimum dry, 1000 M minimum after moisture test 5 minimum for RH-5 and RH-10, 10 minimum for all others MIL-PRF-18546 type - meets requirements of ANSI J-STD-002 - 55 to + 250
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
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
RATED POWER IN %
120 100 80
A D
60 40 20 0 - 55 - 50
B C
0 25
50
150
250
Derating
RATED POWER IN %
AMBIENT TEMPERATURE IN C
REDUCED HEAT SINK DERATING:
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
100 90 80 70 60 50 40 30 20 10 0
A B C
0
20
40
60
80
100
Heat Sink Derating
www.vishay.com 156 For technical questions, contact: ww2bresistors@vishay.com
% 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
MATERIAL SPECIFICATIONS
Element: Copper-nickel alloy or nickel-chrome alloy, depending on resistance value Core: Ceramic, steatite or alumina, depending on physical size Encapsulant: Silicone molded construction Housing: Aluminum with hard anodic coating 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 and Lead (Pb)-free is Ni/Pd/Au, finish is on copper clad steel core terminal. For RH-100 and RH-250 terminals are threaded stainless steel.
Note: Military (RE) parts are only available with tin/lead finish
Vishay Dale
SPECIAL MODIFICATIONS
A number of special modifications to the aluminum housed resistor style are available upon request. Special modifications include:
* Terminal configurations and materials * Resistance values and tolerances * Low resistance temperature coefficient (RTC) * Housing configuration * Threaded mounting holes * Preconditioning and other additional testing
APPLICABLE MIL SPECIFICATIONS
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.
Part Marking: DALE, model, wattage, value, tolerance, date code
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 Thermal Shock Short Time Overload Dielectric Withstanding Voltage Temperature Moisture Resistance Shock, Specified Pulse Vibration, High Frequency Load Life Terminal Strength CONDITIONS OF TEST Rated power applied until thermally stable, then a minimum of 15 min at - 55 C 5 x rated power for 5 s 1000 Vrms for RH-5, RH-10 and RH-25; 2000 Vrms for RH-50 4500 Vrms for RH-100 and RH-250; duration 1 min 250 C for 2 h MIL-STD-202 Method 106, 7b not applicable MIL-STD-202 Method 213, 100 g's for 6 ms, 10 shocks Frequency varied 10 to 2000 Hz, 20 g peak, 2 directions 6 h each 1000 h at rated power, + 25 C, 1.5 h "ON", 0.5 h "OFF" 30 s, 5 pound pull test for RH-5 and RH-10, 10 pound pull test for other sizes, torque test - 24 pound inch for RH-100 and 32 pound inch for RH-250 TEST LIMITS (0.5 % + 0.05 ) R (0.5 % + 0.05 ) R (0.2 % + 0.05 ) R (0.5 % + 0.05 ) R (1.0 % + 0.05 ) R (0.2 % + 0.05 ) R (0.2 % + 0.05 ) R (1.0 % + 0.05 ) R (0.2 % + 0.05 ) R
Document Number: 30201 Revision: 11-Jul-07
For technical questions, contact: ww2bresistors@vishay.com
www.vishay.com 157
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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