Vishay Dale Wirewound Resistors, Military, MIL-PRF Qualified, Type RE, Aluminum Housed, Chassis Mount FEATURES RESISTANCE RANGE 18546

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1 RH, NH FETURES Molded construction for total environmental protection omplete welded construction Meets applicable requirements of MIL-PRF vailable in non-inductive styles (type NH) with ryton- Perry winding for lowest reactive components Mounts on chassis to utilize heat-sink effect Excellent stability in operation STNDRD ELETRIL SPEIFITIONS POWER RTING RESISTNE RNGE GLOL HISTORIL MIL-PRF- P MIL. RNGE SHOWN IN OLD FE MODEL MODEL W Ω TYPE DLE MILITRY ± 0.05%, ± 0.1% ± 0.25% ± 0.5% ± 1%, ± 3%, ± 5% RH005 RH (5) k k k k RE60G k NH005 NH (5) k k k k RE60N k RH0 RH () k k k k RE65G k NH0 NH () k k k k RE65N k RH025 RH k k k k RE70G k NH025 NH k k k k RE70N k RH050 RH k k k k RE75G k NH050 NH k k k k RE75N k RH0 RH k k k k RE77G k NH0 NH k k k k RE77N k RH250 RH k k k k RE80G k NH250 NH k k k k RE80N k WEIGHT (Typical) NOTE: Figures in parentheses on RH-5 and RH- 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. GLOL PRT NUMER INFORMTION New Global Part Numbering: RH0054R125F02 (preferred part numbering format) R H R F 0 2 GLOL MODEL RESISTNE TOLERNE ODE PKGING SPEIL VLUE RH005 L = Milliohm = ± 0.05% = ± 0.1% *E02 = Lead Free, ard Pack (RH005 RH050) (Dash Number) R = Decimal = ± 0.25% D = ± 0.5% *E01 = Lead Free, Skin Pack (RH0 & RH250) (up to 3 digits) K = Thousand F = ± 1.0% J = ± 5.0% Lead Free is not available on RE military type From L000 = 0.008Ω *(Lead Free parts to be released Q1 05) as applicable 15R00 = 15Ω K00 = KΩ Historical Part Number example: RH Ω 1% 02 (will continue to be accepted) 02 = Tin/Lead, ard Pack (RH005 RH050) J01 = Tin/Lead, Skin Pack (RH0 & RH250) RH Ω 1% 02 HISTORIL MODEL RESISTNE VLUE TOLERNE ODE PKGING g Document Number 1

2 DIMENSIONS RH-5, -, -25, -50 NH-5, -, -25, -50 D M F E RH, NH N J G K L P H MODEL DIMENSIONS in inches [millimeters] D E F G H J K L M N P RH NH-5 ± ± ± ± ± ± ± ± 0.0 ± 0.0 ± 0.0 ± ± ± ± [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] ±.381] ± 0.381] ± 0.254] ± 0.254] ± 0.254] ± 0.127] ±.381] ± 0.127] ± 1.57] RH NH- ± ± ± ± ± ± ± ± 0.0 ± 0.0 ± 0.0 ± ± ± ± [14.27 [15.88 [19.05 [34.93 [.67 [.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] RH NH-25 ± ± ± ± ± ± ± ± 0.0 ± 0.0 ± 0.0 ± ± ± ± [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] ±.381] ± 0.381] ± 0.381] ± 0.254] ± 0.254] ± 0.254] ± 0.127] ± 0.381] ± 0.127] ± 1.57] RH NH-50 ± ± ± ± ± ± ± ± 0.0 ± 0.0 ± 0.0 ± ± ± ± [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] RH-0, NH-0 Nickel Plated rass Nut Stainless Steel Stud 3.50 ± [88.90 ± 0.787] ± 0.0 [4.78 ± 0.254] Dia. Typ ± [46.02 ±0.787] ± [71.42 ± 0.787] ± [28.58 ± 0.787] 2.25 ± 0.0 [57.15 ± 0.254] 1.75 ± [44.45 ±0.787] UN-2 Thd. Typ. RH-250, NH-250 Nickel Plated rass Nut Stainless Steel Stud.375 ± [9.52 ± 0.787] 2.75 ± 0.0 [69.85 ± 0.254] ± [ ± 2.36] ± 0.0 [4.78 ± 0.254] Dia. Typ ± [114. ±0.787] ± [25.12 ± 0.787] 1/4 - UN-2 Thd.Typ ± [53.98 ±0.787] ± [4.78 ± 0.787] Typ ±0.015 [19.56 ±0.381] 3.0 ±.031 [76. ± 0.787] 1.25 ± [31.75 ± 1.575] 2.50 ± 0.0 [63.50 ± 0.254] ± [55.58 ±0.787].312 ± [7.92 ± 0.787] ± 0.0 [22.23 ±.254] 3.0 ± 0.0 [76. ±.254] ± 0.0 [98.42 ± 0.254] 7.0 ±.093 [ ± 2.36] 1.25 ± [31.75 ± 1.575] ± [6.35 ± 0.787] Typ ± [24.26 ±.381] Document Number 1 123

3 RH, NH TEHNIL SPEIFITIONS PRMETER UNIT RH RESISTOR HRTERISTIS Temperature oefficient ppm/ ± 0 for 0.1Ω to 0.99Ω, ± 50 for 1Ω to 9.9Ω, ± for Ω and above Dielectric Withstanding Voltage V 00 for RH-5, RH- and RH-25, 00 for RH-50, 4500 for RH-0 and RH-250 Short Time Overload - 5 x rated power for 5 seconds Maximum Working Voltage V (P X R) 1/2 Insulation Resistance Ω,000 Megohm minimum dry, 00 Megohm minimum after moisture test Terminal Strength lb 5 minimum for RH-5 and RH-, minimum for all others Solderability - MIL-PRF Type - Meets requirements of NSI J-STD-002 OperatingTemperature Range - 55/+ 250 POWER RTING Vishay RH resistor wattage ratings are based on mounting to the following heat sink: RH-5 and RH-: 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-0 and RH-250: 12" x 12" x 0.125" thick aluminum panel (294 sq. in. surface area) MIENT TEMPERTURE DERTING Derating is required for ambient temperatures above 25, see the following graph. urves,, apply to operation of unmounted resistors. urve D applies to all types when mounted to specified heat sink. = RH-5 and RH- size resistor, unmounted = RH-25 size resistor, unmounted = RH-50, RH-0 and RH-250 size resistor, unmounted D = ll types mounted to recommended aluminum heat sink RTED POWER IN % D Derating 25 MIENT TEMPERTURE IN REDUED HET SINK DERTING: Derating is also required when recommended heat sink area is reduced. = RH-5 and RH- size resistor = RH-25 size resistor = RH-50, RH-0 and RH-250 size resistor RTED POWER IN % Heat Sink Derating % OF REOMMENDED HET SINK RE 124 Document Number 1

4 MTERIL SPEIFITIONS SPEIL MODIFITIONS Element: opper-nickel alloy or nickel-chrome alloy, depending on resistance value ore: eramic, steatite or alumina, depending on physical size Encapsulant: Silicone molded construction Housing: luminum with hard anodic coating End aps: Stainless steel RH, NH 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 (RT) Standard Terminals: 0% Sn, w/nickel underplate, or 60/ 40 Sn/Pb, w/nickel underplate, coated opperweld on RH-5 through RH-50 size. Threaded stainless steel terminals on RH-0 and RH-250. NOTE: Military (RE) parts are only available with 60/40 Sn/Pb finish. Part Marking: DLE, Model, Wattage, Value, Tolerance, Date ode NH NON-INDUTIVE Models of equivalent physical and electrical specifications are available with non-inductive (ryton-perry) winding. They are identified by substituting the letter N for R in the model number (NH-5, for example). Housing configuration Threaded mounting holes Preconditioning and other additional testing PPLILE MIL SPEIFITIONS MIL-PRF is the military specification covering aluminum housed, chassis mount, power resistors. VISHY RH and NH resistors are listed as qualified on the MIL-PRF QPL. PERFORMNE TEST ONDITIONS OF TEST TEST LIMITS Thermal Shock Rated power applied until thermally stable, then a minimum of 15 minutes at - 55 ± (0.5% Ω) R Short Time Overload 5 x rated power for 5 seconds ± (0.5% Ω) R Dielectric Withstanding Voltage 00Vrms for RH-5, RH- and RH-25; 00Vrms for RH Vrms for RH-0 and RH-250; duration one minute ± (0.2% Ω) R Temperature 250 for 2 hours ± (0.5% Ω) R Moisture Resistance MIL-STD-2 Method 6, 7b not applicable ± (1.0% Ω) R Shock, Specified Pulse MIL-STD-2 Method 213, 0g's for 6 miliseconds, shocks ± (0.2% Ω) R Vibration, High Frequency Frequency varied to 00Hz, g peak, 2 directions 6 hours each ± (0.2% Ω) R Load Life 00 hours at rated power, + 25, 1.5 hours ON, 0.5 hours OFF ± (1.0% Ω) R Terminal Strength second, 5 pound pull test for RH-5 and RH-, pound pull test for other sizes, torque test - 24 pound inch for RH-0 and 32 pound inch for RH-250 ± (0.2% Ω) R Document Number 1 125

5 Notice Legal Disclaimer Notice Vishay Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. ustomers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale. Document Number: 900 Revision: 08-pr-05 1