document number: 30232 for tec hnical questions, contact: ww2aresistors@vishay.com www.vishay.com revision: 17-feb-11 1 fast acting, molded styles, custom designed for your application rs style wirewound fuse resistor vishay dale features ? low temperature coefficient (down to 30 ppm/c) ? high temperature silicone molded package (derated to 200 c) ? performs function of resistor and series fuse and provides predictable fusing times ? complete welded construction ? no flaming or distortion of unit under fusing conditions ? ideal for squib circuit a pplications and protection of semi-conductor devices ? negligible noise and voltage coefficient notes (1) the continuous current rating applies only to values equal to or less than the crossover value. the continuous power rating ap plies only to values equal to or higher than the crossover value. ? be aware that the inherent compromise involved between resist ive and fusing functions sometimes makes certain exact combinatio ns unattainable. however, in nearly all cases, this does not preven t the production of a functional , reliable fuse resistor thoro ughly capable of meeting application requirements. typical electrical specifications the following are offered as examples of reliable designs. h undreds of possible combinations are available for meeting your re quirements. contact factory by using email address in the footer of this page, for assistance. higher wattages available. global model historical model fusing parameters resistance range ? tolerance % 1.0 w continuous power (1) fusing current a typical fusing time ms continuous current a crossover value ? rs01a...209 rs-1a-209 0.5 4 49 to 500 5, 10 0.10 100.0 rs01a...118 rs-1a-118 1.0 9 6.8 to 185 5, 10 0.25 16.0 rs01a...212 rs-1a-212 1.25 8 4.7 to 107 5, 10 0.30 11.11 rs01a...213 rs-1a-213 1.5 15 3.5 to 68 5, 10 0.35 8.16 rs01a...143 rs-1a-143 2.0 15 2.2 to 35 5, 10 0.40 6.25 rs01a...214 rs-1a-214 2.5 23 1.7 to 23 5, 10 0.45 4.94 rs01a...162 rs-1a-162 3.0 48 1.1 to 12 5, 10 0.55 3.31 rs01a...208 rs-1a-208 4.0 47 0.72 to 6.44 5, 10 0.75 1.78 rs01a...207 rs-1a-207 6.0 70 0.35 to 2.17 5, 10 1.0 1.0 rs01a...215 rs-1a-215 8.0 48 0.29 to 1.61 5, 10 1.25 0.64 rs01a...173 rs-1a-173 10.0 50 0.23 to 1.16 5, 10 1.50 0.44 rs01a...216 rs-1a-216 15.0 35 0.19 to 0.82 5, 10 1.75 0.33 rs01a...217 rs-1a-217 20.0 46 0.12 to 0.42 5, 10 2.0 0.25 global part number information global part numbering example: rs 01a402r0js70209 global model value tolerance packaging special (see typical electrical specifications global model column for options) r = decimal 15r00 = 15 ? j = 5.0 % k = 10.0 % e70 = lead (pb)-f ree, tape/reel e12 = lead (pb)-free, bulk (dash number) (up to 3 digits) from 1 to 999 as applicable s70 = tin/lead, tape/reel b12 = tin/lead, bulk historical part numbering example: rs-1a-209 402 ? 5 % s70 rs-1a-209 402 ? 5 % s70 historical model resistance value tolerance code packaging if a model listed in typical electrical specifications table does not meet your requirements, then please include the following information. it will enable us to choo se the best design for your application. 1. operating wattage or current, ambient temper ature and required resistance stability. (% ? r /1000 h) 2. fusing wattage or current and maximum blow time. also, minimum blow time, if applicable. 3. nominal resistance and maximum allowable resistance tolerance, (5 % to 10 % preferred). 4. maximum allowable physical size. 5. voltage to be interrupted. 6. frequency of power source , wave form and a brief desc ription of your application. s01a402 r0js7 0 r 2 0 9
www.vishay.com for technical questions, contact: ww2aresistors@vishay.com document number: 30232 2 revision: 17-feb-11 rs style wirewound fuse resistor vishay dale fast acting, molded styles, custom designed for your application dimensions in inches [millimeters] material specifications element: copper-nickel alloy or nickel-chrome alloy, depending on resistance value core: alumina ceramic encapsulant: thermoset silicone mold compound end caps: stainless steel terminals: tinned copperweld part marking: dale, model, value, tolerance, date code 1.25 [31.75] minimum 0.020 0.002 [0.508 0.051] a b model a b rs01axxx 0.422 0.015 [10.72 0.381] 0.110 0.015 [2.79 0.381] technical specifications parameter unit typical wirewound fu se resistor characteristics temperature coefficient ppm/c 30 for 10 ? and above; 50 for 1.0 ? thru 9.9 ? ; 90 for 0.1 ? thru 0.99 ? power rating w 1.0 standard, hi gher power rati ngs available dielectric strength v ac 500 insulation resistance m ? 1000 minimum dry fusing times s 0.001 to 1.0 minimum fusing current a approximately 4 times the co ntinuous operating current obtainable on some designs. larger ratios produce better designs. terminal strength lb 5 minimum ambient temperature c 0 50 75 100 125 150 175 200 120 100 80 60 40 20 0 rated power in % derating 25
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