usr unr 4-1410 ? ? ? ? ? highest stability ? ? ? ? ? near temperature independency ? ? ? ? ? lowest tolerances ? ? ? ? ? low capacitance and inductance ? ? ? ? ? customized resistance values specifications electrical usr 4-1410 unr 4-1410 note 1) resistance range : 0r1...100r power rating : 0.8 w (70c) tolerance : from 0r1 : 0.1%, 0.25%, 0.5%, 1% from 10r : 0.05%, 0.1%, 0.25%, 0.5%, 1% from 50r : 0.01%, 0.02%, 0.05%, 0.1%, 0.25%, 0.5%, 1% stability : 0.01% temperature coefficient : max. 5 ppm/k (-55...155)c typ. 3 ppm/k (-55...125)c upon request 1 ppm/k (0...60)c insolation resistance : > 10 gohm thermal emf : < 1 v/k environmental operative temperature range : -55c...155c mechanical resistor material : nicr-foil substrate : al 2 o 3 aln housing : pbtp / epoxy connector material : cu tinned, 4-pin note 1) : specially designed for applications with fast changing electrical load. willow technologies ltd. shawlands court, newchapel road, lingfield, surrey, rh7 6bl, united kingdom tel . + 44 (0) 1342 835234 fax. + 44 (0) 1342 834306 e-mail. sales@willow.co.uk web. www.willow.co.uk
0 20 40 60 80 100 25 40 55 70 85 100 115 130 145 155 ambient temperature (c) power (% from nominal pow er) -600 -400 -200 0 200 400 600 temperature (c) dr/r (ppm) +5 ppm/k -5 ppm/k +2,2 ppm/k -1,8 ppm/k -50 -25 0255075 100 125 no minal-dr/r no minal-spread +/ -2,3 ppm /k no minal-spread +/ -2,3 ppm / k usr unr 4-1410 temperature coefficient derating curve dimensions dimensions in mm how to order usr 4-1410 10r x 0.1% tk1 unr 4-1410 0r1 x 0.5% tk3 willow technologies ltd. shawlands court, newchapel road, lingfield, surrey, rh7 6bl, united kingdom tel . + 44 (0) 1342 835234 fax. + 44 (0) 1342 834306 e-mail. sales@willow.co.uk web. www.willow.co.uk
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