www.vishay.com for technical questions, contact: ww2bresistors@vishay.com document number: 30201 154 revision: 01-dec-10 rh, nh vishay dale wirewound resistors, military, mil-prf-18546 qualified, type re, aluminum housed, chassis mount features ? molded construction fo r 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) ? compliant to rohs directive 2002/95/ec note ? figures in parentheses on rh005 and rh010 indicate wattage printed on parts, new construction allows these resistors to be rat ed at higher wattage but will only be printed with the higher wattage on customer request * pb containing terminations are not rohs compliant, exemptions may apply ** please see document ?vishay material category policy?: www.vishay.com/doc?99902 standard electrical specifications global model historical model mil-prf- 18546 type power rating p 25 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 % rh005 rh-5 - re60g 7.5 (5) 5 0.5 to 6.75k - 0.1 to 8.6k - 0.05 to 8.6k - 0.02 to 24.5k 0.10 to 3.32k 3 nh005 nh-5 - re60n 7.5 (5) 5 0.5 to 2.32k - 0.1 to 3.27k - 0.05 to 3.27k - 0.05 to 12.75k 1.0 to 1.65k 3.3 rh010 rh-10 - re65g 12.5 (10) 10 0.5 to 12.7k - 0.1 to 16.69k - 0.05 to 16.69k - 0.01 to 47.1k 0.10 to 5.62k 6 nh010 nh-10 - re65n 12.5 (10) 10 0.5 to 4.45k - 0.1 to 5.54k - 0.05 to 5.54k - 0.05 to 23.5k 1.0 to 2.8k 8.8 rh025 rh-25 - re70g 25 20 0.5 to 25.7k - 0.1 to 32.99k - 0.05 to 32.99k - 0.01 to 95.2k 0.10 to 12.1k 13 nh025 nh-25 - re70n 25 20 0.5 to 9.09k - 0.1 to 12.8k - 0.05 to 12.8k - 0.05 to 47.6k 1.0 to 6.04k 16.5 rh050 rh-50 - re75g 50 30 0.5 to 73.4k - 0.1 to 96k - 0.05 to 96k - 0.01 to 273k 0.10 to 39.2k 28 nh050 nh-50 - re75n 50 30 0.5 to 26k - 0.1 to 36.7k - 0.05 to 36.7k - 0.05 to 136k 1.0 to 19.6k 35 rh100 rh-100 - re77g 100 75 0.5 to 90k - 0.1 to 90k - 0.05 to 90k - 0.05 to 90k 0.05 to 29.4k 350 nh100 nh-100 - re77n 100 75 0.5 to 37.5k - 0.1 to 37.5k - 0.05 to 37.5k - 0.05 to 37.5k 1.0 to 14.7k 385 rh250 rh-250 - re80g 250 120 0.5 to 116k - 0.1 to 116k - 0.05 to 116k - 0.05 to 116k 0.10 to 35.7k 630 nh250 nh-250 - re80n 250 120 0.5 to 48.5k - 0.1 to 48.5k - 0.05 to 48.5k - 0.05 to 48.5k 1.0 to 17.4k 690 global part number information global part numbering example: rh0054r125fc02 (preferred part number format) global model resistance value tolerance code packaging special rh005 (see ?standard electrical specifications? table above for additional p/n?s) l = m r = decimal k = thousand 8l000 = 0.008 15r00 = 15 10k00 = 10 k a = 0.05 % b = 0.1 % c = 0.25 % d = 0.5 % f = 1.0 % h = 3.0 % j = 5.0 % 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 (dash number) (up to 3 digits) from 1 to 999 as applicable c02 = tin/lead, card pack (rh005 - rh050) j01 = tin/lead, skin pack (rh100 and rh250) historical part numbering 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 h0054r125 r fc0 2
document number: 30201 for technical questions, contact: ww2bresistors@vishay.com www.vishay.com revision: 01-dec-10 155 rh, nh wirewound resistors, milita ry, mil-prf-18546 qualified, type re, aluminum ho used, chassis mount vishay dale dimensions in inches [millimeters] dimensions in inches [millimeters] rh005, 010, 025, 050 nh005, 010, 025, 050 p d c a l m n j f e h g k b model dimensions in inches [millimeters] ab c defghjklmnp rh005 nh005 0.444 0.005 [11.28 0.127] 0.490 0.005 [12.45 0.127] 0.600 0.030 [15.24 0.787] 1.125 0.062 [28.58 1.57] 0.334 0.015 [8.48 0.381] 0.646 0.015 [16.41 0.381] 0.320 0.015 [8.13 0.381] 0.065 0.010 [1.65 0.254] 0.133 0.010 [3.38 0.254] 0.078 0.010 [1.98 0.254] 0.093 0.005 [2.36 0.127] 0.078 0.015 [1.98 0.381] 0.050 0.005 [1.27 0.127] 0.266 0.062 [6.76 1.57] rh010 nh010 0.562 0.005 [14.27 0.127] 0.625 0.005 [15.88 0.127] 0.750 0.031 [19.05 0.787] 1.375 0.062 [34.93 1.57] 0.420 0.015 [10.67 0.381] 0.800 0.015 [20.32 0.381] 0.390 0.015 [9.91 0.381] 0.075 0.010 [1.91 0.254] 0.165 0.010 [4.19 0.254] 0.093 0.010 [2.36 0.254] 0.094 0.005 [2.39 0.127] 0.102 0.015 [2.59 0.381] 0.085 0.005 [2.16 0.127] 0.312 0.062 [7.92 1.57] rh025 nh025 0.719 0.005 [18.26 0.127] 0.781 0.005 [19.84 0.127] 1.062 0.031 [26.97 0.787] 1.938 0.062 [49.23 1.57] 0.550 0.015 [13.97 0.381] 1.080 0.015 [27.43 0.381] 0.546 0.015 [13.87 0.381] 0.075 0.010 [1.91 0.254] 0.231 0.010 [5.87 0.254] 0.172 0.010 [4.37 0.254] 0.125 0.005 [3.18 0.127] 0.115 0.015 [2.92 0.381] 0.085 0.005 [2.16 0.127] 0.438 0.062 [11.13 1.57] rh050 nh050 1.562 0.005 [39.67 0.127] 0.844 0.005 [21.44 0.127] 1.968 0.031 [49.99 0.787] 2.781 0.062 [70.64 1.57] 0.630 0.015 [16.00 0.381] 1.140 0.015 [28.96 0.381] 0.610 0.015 [15.49 0.381] 0.088 0.010 [2.24 0.254] 0.260 0.010 [6.60 0.254] 0.196 0.010 [4.98 0.254] 0.125 0.005 [3.18 0.127] 0.107 0.015 [2.72 0.381] 0.085 0.005 [2.16 0.127] 0.438 0.062 [11.13 1.57] rh250, nh250 rh100, nh100 2.25 0.010 [57.15 0.254] 0.9 8 9 0.031 [25.12 0.7 8 7] 2. 8 12 0.031 [71.42 0.7 8 7] 3.50 0.031 [ 88 .90 0.7 8 7] nickel plated brass nut stainless steel stud 1.125 0.031 [2 8 .5 8 0.7 8 7] 0.1 88 0.010 [4.7 8 0.254] dia. typ. 12 - 24 unc-2a thd. typ. 2.75 0.010 [69. 8 5 0.254] 0.375 0.031 [9.52 0.7 8 7] 5.47 8 0.093 [139.14 2.36] 1.75 0.031 [44.45 0.7 8 7] 55.5 8 0.7 8 7 [2.1 88 0.031] 2.125 0.031 [53.9 8 0.7 8 7] 0.250 0.031 [6.35 0.7 8 7] typ. 4.50 0.031 [114.30 0.7 8 7] 2.50 0.010 [63.50 0.254] 7.0 0.093 [177. 8 0 2.36] 0. 8 75 0.010 [22.23 0.254] 3.0 0.010 [76.20 0.254] 3. 8 75 0.010 [9 8 .42 0.254] 0.770 0.015 [19.56 0.3 8 1] 0.1 88 0.031 [4.7 8 0.7 8 7] typ. 1. 8 12 0.031 [46.02 0.7 8 7] 0.312 0.031 [7.92 0.7 8 7] 1.25 0.062 [31.75 1.575] 1.25 0.062 [31.75 1.575] 1/4 - 20 unc-2a thd. typ. 0.955 0.015 [24.26 0.3 8 1] 3.0 0.031 [76.20 0.7 8 7] nickel plated brass nut stainless steel stud 0.1 88 0.010 [4.7 8 0.254] dia. typ.
www.vishay.com for technical questions, contact: ww2bresistors@vishay.com document number: 30201 156 revision: 01-dec-10 rh, nh vishay dale wirewound resistor s, military, mil- prf-18546 qualified, type re, aluminum ho used, chassis mount 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) 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 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 technical specifications parameter unit rh resistor characteristics temperature coefficient ppm/c 100 for 0.1 to 0.99 , 50 for 1 to 9.9 , 20 for 10 and above dielectric withstanding voltage v ac 1000 for rh005, rh010 and rh025, 2000 for rh050, 4500 for rh100 and rh250 short time overload - 5 rated power for 5 s maximum working voltage v ( p x r ) 1/2 insulation resistance 10 000 m minimum dry, 1000 m minimum after moisture test terminal strength lb 5 minimum for rh 005 and rh010, 10 minimum for all others solderability - mil-prf-18546 type - meet s requirements of ansi j-std-002 operating temperature range c - 55 to + 250 % n i r e w o p d e t a r derating - 55 - 50 0 50 150 250 ambient temperature in c 25 120 a c d b 0 20 40 60 8 0 100 100 90 8 0 70 60 50 40 30 20 10 0 0204060 8 0100 % of recommended heat sink area % n i r e w o p d e t a r heat sink derating a c b
document number: 30201 for technical questions, contact: ww2bresistors@vishay.com www.vishay.com revision: 01-dec-10 157 rh, nh wirewound resistors, milita ry, mil-prf-18546 qualified, type re, aluminum ho used, chassis mount vishay dale 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 rh005 through rh050 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 rh100 and rh250 terminals are threaded stainless steel. note: military (re) parts are only available with tin/lead finish 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 (nh005, for example). 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. 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 voltage 1000 v rms for rh005, rh010 and rh025; 2000 v rms for rh050 4500 v rms for rh100 and rh250; duration 1 min (0.2 % + 0.05 ) r 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 terminal strength 30 s, 5 pound pull test for rh005 and rh010, 10 pound pull test for other sizes, torque test - 24 pound inch for rh100 and 32 pound inch for rh250 (0.2 % + 0.05 ) r
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