document number: 30201 for tec hnical questions, contact: ww2bresistors@vishay.com www.vishay.com revision: 02-mar-11 1 wirewound resistors, industrial power, aluminum housed, chassis mount rh, nh vishay dale 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) ? mil-prf-18546 qualified, type re resistors can be found at: www.vishay.com/doc?30282 ? compliant to rohs directive 2002/95/ec note ? rh005 and nh005 printed with 5 w power rati ng. rh010 and nh010 printed with 10 w power rating. new construc tion allows these resistors to be rated at high er wattage but will only be printed with the higher wa ttage upon customer request standard electrical specifications global model historical model power rating p 25 c w resistance range ? resistance range ? resistance range ? resistance range ? weight (typical) g 0.05 %, 0.1 % 0.25 % 0.5 % 1 %, 2 %, 5 % 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 3.3 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 6 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 8.8 rh025 rh-25 25 0.5 to 25.7k 0.1 to 32.99k 0.05 to 32.99k 0.01 to 95.2k 13 nh025 nh-25 25 0.5 to 9.09k 0.1 to 12.8k 0.05 to 12.8k 0.05 to 47.6k 16.5 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 35 rh100 rh-100 100 0.5 to 90k 0.1 to 90k 0.05 to 90k 0.05 to 90k 350 nh100 nh-100 100 0.5 to 37.5k 0.1 to 37.5k 0.05 to 37.5k 0.05 to 37.5k 385 rh250 rh-250 250 0.5 to 116k 0.1 to 116k 0.05 to 116k 0.05 to 116k 630 nh250 nh-250 250 0.5 to 48.5k 0.1 to 48.5k 0.05 to 48.5k 0.05 to 48.5k 690 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 ? maximum working voltage v ( p x r ) 1/2 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 global model resistance value tolerance code packaging special rh005 (see standard electrical specifications global model column for options) r = decimal k = thousand 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) (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 number ing example: rh-5 4.125 ? 1 % c02 rh-5 4.125 ? 1 % c02 historical model resistance value tolerance code packaging * pb containing terminations are not rohs compliant, exemptions may apply ** please see document vishay material category policy: www.vishay.com/doc?99902 rh0054r12 5fc02
www.vishay.com for technical questions, contact: ww2bresistors@vishay.com document number: 30201 2 revision: 02-mar-11 rh, nh vishay dale wirewound resistors, industrial power, aluminum housed, chassis mount dimensions in inches [millimeters] dimensions in inches [millimeters] global model dimensions in inches [millimeters] abcdefghjklmnp 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] rh005, 010, 025, 050 nh005, 010, 025, 050 p d c a l m n j f e h g k b rh250, nh250 rh100, nh100 2.25 0.010 [57.15 0.254] 0.989 0.031 [25.12 0.787] 2.812 0.031 [71.42 0.787] 3.50 0.031 [88.90 0.787] nickel plate d b rass nut stainless steel stu d 1.125 0.031 [28.58 0.787] 0.188 0.010 [4.78 0.254] dia. typ. 12 - 24 unc-2a th d . typ. 2.75 0.010 [69.85 0.254] 0.375 0.031 [9.52 0.787] 5.478 0.093 [139.14 2.36] 1.75 0.031 [44.45 0.787] 55.58 0.787 [2.188 0.031] 2.125 0.031 [53.98 0.787] 0.250 0.031 [6.35 0.787] typ. 4.50 0.031 [114.30 0.787] 2.50 0.010 [63.50 0.254] 7.0 0.093 [177.80 2.36] 0.875 0.010 [22.23 0.254] 3.0 0.010 [76.20 0.254] 3.875 0.010 [98.42 0.254] 0.770 0.015 [19.56 0.381] 0.188 0.031 [4.78 0.787] typ. 1.812 0.031 [46.02 0.787] 0.312 0.031 [7.92 0.787] 1.25 0.062 [31.75 1.575] 1.25 0.062 [31.75 1.575] 1/4 - 20 unc-2a th d . typ. 0.955 0.015 [24.26 0.381] 3.0 0.031 [76.20 0.787] nickel plate d b rass nut stainless steel stu d 0.188 0.010 [4.78 0.254] dia. typ.
document number: 30201 for tec hnical questions, contact: ww2bresistors@vishay.com www.vishay.com revision: 02-mar-11 3 rh, nh wirewound resistors, industrial power, aluminum housed, chassis mount 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) ambient temperature derating derating is required for a mbient 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 reco mmended heat sink area is reduced. a = rh005 and rh010 size resistor b = rh025 size resistor c = rh050, rh100 and rh250 size resistor free air power rating global model rh005 nh005 rh010 nh010 rh025 nh025 rh050 nh050 rh100 nh100 rh250 nh250 w at 25 c 3.75 6.25 12.5 20 40 100 rated power in % ambient temperature in c 25 120 a c d b 0 20 40 60 80 100 - 55 - 50 0 50 150 250 0 100 80 60 40 20 0 100 90 80 70 60 50 40 30 20 10 % of recommended heat s ink area rated power in % c b a
www.vishay.com for technical questions, contact: ww2bresistors@vishay.com document number: 30201 4 revision: 02-mar-11 rh, nh vishay dale wirewound resistors, industrial power, 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 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. part marking: dale, model, wattage, value, tolerance, date code nh non-inductive models of equivalent physical and electrical specifications are available with non-indu ctive (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 vishay rh and nh resistors are listed as qualified on the mil-prf-18546 qpl. mil-prf- 18546 qualified, type re resistors can be found at: www.vishay.com/doc?30282 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 vrms 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 frequen cy 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 rh01 0, 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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