RH, NH www.vishay.com Vishay Dale Wirewound Resistors, Industrial Power, Aluminum Housed, Chassis Mount FEATURES •Molded construction for total environmental protection • Complete welded construction Available • Meets applicable requirements of MIL-PRF-18546 • Available in non-inductive styles (type NH) with Ayrton-Perry winding for lowest reactive components • Mounts on chassis to utilize heat-sink effect Available • Excellent stability in operation (< 1 % change in resistance) • MIL-PRF-18546 qualified, type RE resistors can Available be found at: www.vishay.com/doc?30282 • Material categorization: For definitions of compliance please see Available www.vishay.com/doc?99912 Note * This datasheet provides information about parts that are RoHS-compliant and/or parts that are non-RoHS-compliant. For example, parts with lead (Pb) terminations are not RoHS-compliant. Please see the information/tables in this datasheet for details. STANDARD ELECTRICAL SPECIFICATIONS RESISTANCE RESISTANCE RESISTANCE RESISTANCE POWER WEIGHT GLOBAL HISTORICAL RANGE  RANGE  RANGE  RANGE  RATING (typical) MODEL MODEL P W g ± 0.05 %, ± 0.1 % ± 0.25 % ± 0.5 % ± 1 %, ± 3 %, ± 5 % 25 °C RH005 RH-5 7.5 0.5 to 6.75K 0.1 to 8.6K 0.05 to 8.6K 0.02 to 24.5K 3 NH005 NH-5 7.5 0.5 to 2.32K 0.1 to 3.27K 0.05 to 3.27K 0.05 to 12.75K 3 RH010 RH-10 12.5 0.5 to 12.7K 0.1 to 16.69K 0.05 to 16.69K 0.01 to 47.1K 5 NH010 NH-10 12.5 0.5 to 4.45K 0.1 to 5.54K 0.05 to 5.54K 0.05 to 23.5K 5 RH025 RH-25 25 0.5 to 25.7K 0.1 to 32.99K 0.05 to 32.99K 0.01 to 95.2K 12 NH025 NH-25 25 0.5 to 9.09K 0.1 to 12.8K 0.05 to 12.8K 0.05 to 47.6K 12 RH050 RH-50 50 0.5 to 73.4K 0.1 to 96K 0.05 to 96K 0.01 to 273K 28 NH050 NH-50 50 0.5 to 26K 0.1 to 36.7K 0.05 to 36.7K 0.05 to 136K 28 RH100 RH-100 100 0.5 to 90K 0.1 to 90K 0.05 to 90K 0.05 to 90K 353 NH100 NH-100 100 0.5 to 37.5K 0.1 to 37.5K 0.05 to 37.5K 0.05 to 37.5K 353 RH250 RH-250 250 0.5 to 116K 0.1 to 116K 0.05 to 116K 0.05 to 116K 637 NH250 NH-250 250 0.5 to 48.5K 0.1 to 48.5K 0.05 to 48.5K 0.05 to 48.5K 637 Note • RH005 and NH005 printed with 5 W power rating. RH010 and NH010 printed with 10 W power rating. New construction allows these resistors to be rated at higher wattage but will only be printed with the higher wattage upon customer request TECHNICAL SPECIFICATIONS PARAMETER UNIT RH RESISTOR CHARACTERISTICS Temperature Coefficient ppm/°C ± 20 for 10  and above; ± 50 for 1  to 9.9 , ± 100 for 0.1  to 0.99  1/2 Maximum Working Voltage V (P x R) Insulation Resistance  10 000 M minimum dry, 1000 M minimum after moisture test Solderability - Meets requirements of ANSI J-STD-002 Operating Temperature Range °C - 55 to + 250 GLOBAL PART NUMBER INFORMATION Global Part Numbering example: RH0054R125FC02 R H 00 54 R 1 2 5F C 0 2 GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING SPECIAL RH005 R = Decimal A = 0.05 % E02 = Lead (Pb)-free, card pack (RH005 - RH050) (Dash Number) (See Standard K = Thousand B = 0.1 % E01 = Lead (Pb)-free, skin pack (RH100 and RH250) (up to 3 digits) Electrical 15R00 = 15  C = 0.25 % From 1 to 999 C02 = Tin/lead, card pack (RH005 - RH050) Specifications 10K00 = 10 k D = 0.5 % as applicable J01 = Tin/lead, skin pack (RH100 and RH250) Global Model F = 1.0 % column for H = 3.0 % options) J = 5.0 % Historical Part Numbering example: RH-5 4.125  1 % C02 RH-5 4.125  1 % C02 HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING Revision: 23-May-13 Document Number: 30201 1 For technical questions, contact: ww2aresistors@vishay.com 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 RH, NH www.vishay.com Vishay Dale DIMENSIONS in inches [millimeters] D RH005, 010, 025, 050 C F M NH005, 010, 025, 050 A E N G J B P H L K DIMENSIONS in inches [millimeters] GLOBAL  MODEL AB C D E F G H J K L M N P 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 RH005 ± 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 NH005 [11.28 [12.45 [15.24 [28.58 [8.48 [16.41 [8.13 [1.65 [3.38 [1.98 [2.36 [1.98 [1.27 [6.76 ± 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] 0.800 0.390 0.075 0.165 0.093 0.094 0.102 0.085 0.312 0.420 0.562 0.625 0.750 1.375 RH010 ± 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 [10.67 NH010 [14.27 [15.88 [19.05 [34.93 [20.32 [9.91 [1.91 [4.19 [2.36 [2.39 [2.59 [2.16 [7.92 ± 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] 0.719 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 RH025 ± 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 NH025 [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] 1.562 1.968 2.781 0.630 1.140 0.610 0.088 0.260 0.196 0.125 0.107 0.085 0.438 0.844 RH050 ± 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 NH050 [39.67 [21.44 [49.99 [70.64 [16.00 [28.96 [15.49 [2.24 [6.60 [4.98 [3.18 [2.72 [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] DIMENSIONS in inches [millimeters] RH100, NH100 0.188 ± 0.010 Nickel plated [4.78 ± 0.254] brass nut 3.50 ± 0.031 1.812 ± 0.031 Dia. typ. stainless steel stud [88.90 ± 0.787] [46.02 ± 0.787] 1.125 ± 0.031 [28.58 ± 0.787] 2.812 ± 0.031 1.75 ± 0.031 [71.42 ± 0.787] [44.45 ± 0.787] 2.25 ± 0.010 [57.15 ± 0.254] 0.375 ± 0.031 [9.52 ± 0.787] 0.989 ± 0.031 0.188 ± 0.031 12 - 24 0.770 ± 0.015 [25.12 ± 0.787] [4.78 ± 0.787] UNC-2A [19.56 ± 0.381] 2.75 ± 0.010 typ. Thd. typ. [69.85 ± 0.254] 5.478 ± 0.093 [139.14 ± 2.36] RH250, NH250 0.188 ± 0.010 [4.78 ± 0.254] 1/4 - 20 Dia. typ. Nickel plated 2.125 ± 0.031 UNC-2A thd. typ. brass nut [53.98 ± 0.787] 4.50 ± 0.031 stainless steel stud [114.30 ± 0.787] 1.25 ± 0.062 [31.75 ± 1.575] 3.0 ± 0.031 2.188 ± 0.031 [76.20 ± 0.787] [55.58 ± 0.787] 2.50 ± 0.010 [63.50 ± 0.254] 0.875 ± 0.010 0.250 ± 0.031 0.955 ± 0.015 1.25 ± 0.062 [22.23 ± 0.254] [6.35 ± 0.787] [24.26 ± 0.381] 0.312 ± 0.031 [31.75 ± 1.575] 3.0 ± 0.010 typ. [7.92 ± 0.787] [76.20 ± 0.254] 3.875 ± 0.010 [98.42 ± 0.254] 7.0 ± 0.093 [177.80 ± 2.36] Revision: 23-May-13 Document Number: 30201 2 For technical questions, contact: ww2aresistors@vishay.com 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 RH, NH www.vishay.com Vishay Dale POWER RATING Vishay RH resistor wattage ratings are based on mounting to the following heat sink: RH005 and RH010: 4" x 6" x 2" x 0.040" thick aluminum chassis (129 sq. in. surface area) RH025: 5" x 7" x 2" x 0.040" thick aluminum chassis (167 sq. in. surface area) RH050: 12" x 12" x 0.059" thick aluminum panel (291 sq. in. surface area) RH100 and RH250: 12" x 12" x 0.125" thick aluminum panel (294 sq. in. surface area) FREE AIR POWER RATING GLOBAL RH005 RH010 RH025 RH050 RH100 RH250 NH005 NH010 NH025 NH050 NH100 NH250 MODEL W at 25 °C 4.5 7.5 12.5 20 40 100 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 = RH005 and RH010 size resistor, unmounted B = RH025 size resistor, unmounted C = RH050, RH100 and RH250 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 50 150 250 25 AMBIENT TEMPERATURE IN °C REDUCED HEAT SINK DERATING Derating is also required when recommended heat sink area is reduced. A = RH005 and RH010 size resistor B = RH025 size resistor C = RH050, RH100 and RH250 size resistor 100 90 80 70 A 60 B 50 C 40 30 20 10 0 0 20 40 60 80 100 % OF RECOMMENDED HEAT SINK AREA Revision: 23-May-13 Document Number: 30201 3 For technical questions, contact: ww2aresistors@vishay.com 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 RATED POWER IN % RATED POWER IN % RH, NH www.vishay.com Vishay Dale MATERIAL SPECIFICATIONS SPECIAL MODIFICATIONS Element: Copper-nickel alloy or nickel-chrome alloy, A number of special modifications to the aluminum housed depending on resistance value resistor style are available upon request. Special modifications include: Core: Ceramic, steatite or alumina, depending on physical size • Terminal configurations and materials Encapsulant: Silicone molded construction • Resistance values and tolerances Housing: Aluminum with hard anodic coating • Low resistance temperature coefficient (RTC) End Caps: Stainless steel • Housing configuration Standard Terminals: For RH005 through RH050 size • Threaded mounting holes terminal finish - Tin/lead is 60/40 Sn/Pb w/Nickel underplate • Preconditioning and other additional testing and Lead (Pb)-free is Ni/Pd/Au, finish is on copper clad steel core terminal. For RH100 and RH250 terminals are APPLICABLE MIL SPECIFICATIONS threaded stainless steel. Vishay RH and NH resistors are listed as qualified on the Part Marking: Dale, model, wattage, value, tolerance, date MIL-PRF-18546 QPL. MIL-PRF-18546 qualified, type RE code resistors can be found at: www.vishay.com/doc?30282  NH NON-INDUCTIVE  Models of equivalent physical and electrical specifications  are available with non-inductive (Ayrton-Perry) winding. They are identified by substituting the letter N for R in the model number (NH005, for example). PERFORMANCE TEST CONDITIONS OF TEST TEST LIMITS Thermal Shock Rated power applied until thermally stable, then a minimum of 15 min at - 55 °C ± (0.5 % + 0.05 ) R Short Time Overload 5 x rated power for 5 s ± (0.5 % + 0.05 ) R Dielectric Withstanding  1000 V for RH005, RH010 and RH025; 2000 Vrms for RH050; rms ± (0.2 % + 0.05 ) R Voltage 4500 V for RH100 and RH250; duration 1 min rms Temperature 250 °C for 2 h ± (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 Hz to 2000 Hz, 20 g peak, 2 directions 6 h each ± (0.2 % + 0.05 ) R Load Life 1000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF” ± (1.0 % + 0.05 ) R 30 s, 5 pound pull test for RH005 and RH010, 10 pound pull test for other sizes; Terminal Strength ± (0.2 % + 0.05 ) R torque test - 24 pound inch for RH100 and 32 pound inch for RH250 Revision: 23-May-13 Document Number: 30201 4 For technical questions, contact: ww2aresistors@vishay.com 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 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 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 in any datasheet or in any other disclosure relating to any product. Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. Parameters provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein. Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the Vishay product could result in personal injury or death. Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. 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. Product names and markings noted herein may be trademarks of their respective owners. Material Category Policy Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (EEE) - recast, unless otherwise specified as non-compliant. Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU. Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21 conform to JEDEC JS709A standards. Revision: 02-Oct-12 Document Number: 91000 1