UT-3资料

UT Series

Silicone󰀠Coated󰀠Power󰀠Resistors

•••••••Resistances from 0.005 to 260kOhmsPower Rating 0.1 to 13Watts

Resistance Tolerances to ± 0.01%Low TCR: ± 20ppm/K Standard

MIL-R-26 / MIL-R-39007 Power Ratings

Temperature Range: -55°C to +350°C ( “V” Rating )Non-Inductive Windings Available

SPECIFICATIONS

SpecificationTolerancesTemperature CoefficientValue±0.01%󰀠to󰀠±10%󰀠(󰀠1%󰀠Standard󰀠)>10W󰀠:󰀠±20ppm/K1W󰀠to10W󰀠:󰀠±50ppm/K<1W󰀠:󰀠Call󰀠Factory-55°C󰀠to󰀠+250°C󰀠:󰀠Characteristic󰀠U-55°C󰀠to󰀠+350°C󰀠:󰀠Characteristic󰀠V500󰀠VAC󰀠:󰀠UT-1󰀠/󰀠UT-1/2A󰀠/󰀠UT-1/2󰀠/󰀠UT-1A1000󰀠VAC󰀠:󰀠All󰀠OthersCenterless󰀠ground󰀠ceramic󰀠coreTinned󰀠copper󰀠or󰀠copperweld󰀠leadsHigh󰀠temperature󰀠/󰀠trivalent󰀠/󰀠inorganic󰀠Silicone󰀠coatingAll󰀠welded󰀠terminationsTemperature󰀠RangeDielectric󰀠StrengthConstuctionEnvironmental󰀠Performance(MIL-STD󰀠202)DRCharacteristic󰀠U±0.2%󰀠+󰀠0.05W±1%󰀠+󰀠0.05W ±0.2%󰀠+󰀠0.05W±0.2%󰀠+󰀠0.05W±0.2%󰀠+󰀠0.05W±0.2%󰀠+󰀠0.05W±0.1%󰀠+󰀠0.05W±0.1%󰀠+󰀠0.05W120100

Characteristic󰀠V±0.2%󰀠+󰀠0.05W±3%󰀠+󰀠0.05W ±2%󰀠+󰀠0.05W±2%󰀠+󰀠0.05W±2%󰀠+󰀠0.05W±2%󰀠+󰀠0.05W±0.2%󰀠+󰀠0.05W±0.2%󰀠+󰀠0.05WDielectricLoad󰀠LifeStorageMoisture󰀠ResistanceThermal󰀠Shock5X󰀠Overload󰀠(󰀠5s󰀠)ShockVibrationPower󰀠Derating󰀠Curve

Power󰀠(󰀠%󰀠)806040200

CHCHAR󰀠VAR󰀠U050100150200250300350400

Ordering Information

For󰀠Non-Inductive󰀠Windings󰀠/󰀠insert󰀠the󰀠letter󰀠“N”󰀠(󰀠i.e.󰀠UTN-5󰀠)Part󰀠Number󰀠-󰀠Resistance󰀠-󰀠Tolerance󰀠-󰀠TCR󰀠(󰀠If󰀠not󰀠standard󰀠)Example:󰀠UT-5󰀠25kOhms󰀠0.1%

Ambient󰀠Temperature󰀠(°C)

Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, United Kingdom.󰀠󰀠 + 44 (0) 1342 835234 󰀠 + 44 (0) 1342 834306 info@willow.co.uk http://www.willow.co.uk 󰀠󰀠󰀠󰀠rev.󰀠03/2006A

元器件交易网www.cecb2b.com

UT Series

Silicone󰀠Coated󰀠Power󰀠Resistors

SPECIFICATIONS (continued)

TypeWattage󰀠Rating(󰀠Watts󰀠)UV0.250.50.91.52.03.03.754.03.55.56.56.56.59.09.09.013DimensionsMaximum󰀠Ohms󰀠2±0.062”󰀠[±1.6mm]A±0.031”󰀠[±0.8mm]B±0.002”󰀠[±0.05mm]0.018󰀠[0.46]0.020 [0.5]0.025󰀠[0.6]0.020 [0.5]0.025󰀠[0.6]0.020 [0.5]0.025󰀠[0.6]0.032 [0.8]0.025󰀠[0.6]0.032󰀠[0.8]0.032󰀠[0.8]0.040 [1.0]0.032󰀠[0.8]0.032󰀠[0.8]0.032 [0.8]0.040󰀠[1.0]0.040󰀠[1.0]0.032󰀠[0.8]0.040󰀠[1.0]0.040󰀠[1.0]0.040󰀠[1.0]0.040󰀠[1.0]0.040󰀠[1.0]C1MaximumWorkingVoltageMIL-R-26󰀠/MIL-R-39007StyleUT-1UT-1/2AUT-1/23UT-1AUT-2UT-2AUT-2BUT-2CUT-2EUT-3UT-5UT-5AUT-6UT-7A3UT-7BUT-7CUT-100.10.40.751.01.52.53.03.03.04.05.05.05.07.07.07.0105002.5k7.5k10k12.5k22k22k40k30k45k91k65k95k150k100k154k260k0.150󰀠[3.8]0.250󰀠[6.4]0.330󰀠[8.4]0.406󰀠[10.3]0.350󰀠[8.9]0.500󰀠[12.7]0.560󰀠[14.2]0.500󰀠[12.7]0.500󰀠[12.7]0.625󰀠[15.9]0.875󰀠[22.2]0.970󰀠[24.6]1.000󰀠[25.4]1.375󰀠[35.0]1.400󰀠[35.6]1.220󰀠[31.0]1.780󰀠[45.2]0.078󰀠[2.0]0.078󰀠[2.0]0.078󰀠[2.0]0.094󰀠[2.4]0.156󰀠[4.0]0.187󰀠[4.7]0.187󰀠[4.7]0.250󰀠[6.4]0.200󰀠[5.1]0.250󰀠[6.4]0.312󰀠[7.9]0.203󰀠[5.2]0.312󰀠[7.9]0.375󰀠[9.5]0.312󰀠[7.9]0.312󰀠[7.9]0.375󰀠[9.5]8.520295260130140140140210360390504650590620850RW-78󰀠RWR-78󰀠RW-67RW-74RWR-74󰀠RW-69RW-79󰀠RWR-79󰀠RW-70Lead󰀠Diameter:󰀠18󰀠AWG󰀠=󰀠0.040”󰀠/󰀠20󰀠AWG󰀠=󰀠0.032”󰀠/󰀠22󰀠AWG󰀠=󰀠0.025”󰀠/󰀠24󰀠AWG󰀠=󰀠0.020”󰀠/󰀠25󰀠AWG󰀠=󰀠0.018”Where󰀠more󰀠than󰀠one󰀠lead󰀠is󰀠listed󰀠/󰀠the󰀠top󰀠value󰀠is󰀠Standard2

󰀠󰀠For󰀠non-inductive󰀠windings󰀠/󰀠divide󰀠maximum󰀠resistance󰀠by󰀠23

󰀠This󰀠part󰀠does󰀠not󰀠meet󰀠the󰀠RoHS󰀠directive󰀠-󰀠call󰀠factory󰀠for󰀠details

1󰀠󰀠󰀠󰀠󰀠

Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, United Kingdom.󰀠󰀠 + 44 (0) 1342 835234 󰀠 + 44 (0) 1342 834306 info@willow.co.uk http://www.willow.co.uk

󰀠03/2006A󰀠󰀠󰀠󰀠