UT-3资料
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rev.03/2006AUT Series
Resistances from 0.005 to 260kOhms
Power 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•
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••SPECIFICATIONS
SpecificationValue
Tolerances±0.01%to±10%(1%Standard)
Temperature Coefficient>10W:±20ppm/K1Wto10W:±50ppm/K<1W:CallFactory
TemperatureRange-55°Cto+250°C:CharacteristicU-55°Cto+350°C:CharacteristicV
DielectricStrength500VAC:UT-1/UT-1/2A/UT-1/2/UT-1A1000VAC:AllOthers
ConstuctionCenterlessgroundceramiccoreTinnedcopperorcopperweldleadsHightemperature/trivalent/inorganicSiliconecoatingAllweldedterminations
EnvironmentalPerformance(MIL-STD202)DR
CharacteristicUCharacteristicV
Dielectric±0.2%+0.05W±0.2%+0.05W
LoadLife±1%+0.05W ±3%+0.05W
Storage±0.2%+0.05W±2%+0.05W
MoistureResistance±0.2%+0.05W±2%+0.05W
ThermalShock±0.2%+0.05W±2%+0.05W
5XOverload(5s)±0.2%+0.05W±2%+0.05W
Shock±0.1%+0.05W±0.2%+0.05W
Vibration±0.1%+0.05W±0.2%+0.05W
ForNon-InductiveWindings/inserttheletter“N”(i.e.UTN-5)
PartNumber-Resistance-Tolerance-TCR(Ifnotstandard)
Example:UT-525kOhms0.1%050100150200250300350400020406080100120
Power(%)
AmbientTemperature(°C)
CHARUC
HA
RV
PowerDeratingCurveSiliconeCoatedPowerResistors
Ordering Information
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 元器件交易网www.cecb2b.com
03/2006ATypeWattageRating(Watts)MaximumOhms2DimensionsMaximumWorkingVoltageMIL-R-26/MIL-R-39007StyleA±0.062”[±1.6mm]B±0.031”[±0.8mm]C1±0.002”[±0.05mm]UV
UT-10.10.255000.150[3.8]0.078[2.0]0.018[0.46]8.5
UT-1/2A0.40.52.5k0.250[6.4]0.078[2.0]0.020 [0.5]0.025[0.6]20
UT-1/230.750.97.5k0.330[8.4]0.078[2.0]0.020 [0.5]0.025[0.6]29
UT-1A1.01.510k0.406[10.3]0.094[2.4]0.020 [0.5]0.025[0.6]52RW-70
UT-21.52.012.5k0.350[8.9]0.156[4.0]0.032 [0.8]0.025[0.6]60
UT-2A2.53.022k0.500[12.7]0.187[4.7]0.032[0.8]130RW-69
UT-2B3.03.7522k0.560[14.2]0.187[4.7]0.032[0.8]140RW-79RWR-79
UT-2C3.04.040k0.500[12.7]0.250[6.4]0.040 [1.0]0.032[0.8]140
UT-2E3.03.530k0.500[12.7]0.200[5.1]0.032[0.8]140
UT-34.05.545k0.625[15.9]0.250[6.4]0.032 [0.8]0.040[1.0]210
UT-55.06.591k0.875[22.2]0.312[7.9]0.040[1.0]360RW-74RWR-74
UT-5A5.06.565k0.970[24.6]0.203[5.2]0.032[0.8]390
UT-65.06.595k1.000[25.4]0.312[7.9]0.040[1.0]504RW-67
UT-7A37.09.0150k1.375[35.0]0.375[9.5]0.040[1.0]650
UT-7B7.09.0100k1.400[35.6]0.312[7.9]0.040[1.0]590
UT-7C7.09.0154k1.220[31.0]0.312[7.9]0.040[1.0]620
UT-101013260k1.780[45.2]0.375[9.5]0.040[1.0]850RW-78
RWR-78SPECIFICATIONS (continued)
1LeadDiameter:18AWG=0.040”/20AWG=0.032”/22AWG=0.025”/24AWG=0.020”/25AWG=0.018”Wheremorethanoneleadislisted/thetopvalueisStandard2Fornon-inductivewindings/dividemaximumresistanceby23ThispartdoesnotmeettheRoHSdirective-callfactoryfordetailsUT Series
SiliconeCoatedPowerResistors
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 元器件交易网www.cecb2b.com