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Features

T

N

■Essentiallyin?niteresolution

A

I

L

OMP

SC

■Excellentrotationallife

*RoH

■Highquality,ruggedconstruction

■Generalpurposeapplications

■Non-standardfeaturesavailable

■Costandspacesaving

6539/6639-PrecisionPotentiometer

ElectricalCharacteristics1

6539ServoMount

6639BushingMount

ProductDimensions

StandardResistanceRange................1Kto100Kohms......................1Kto100Kohms

TotalResistanceTolerance..................±15%.........................................±15%

IndependentLinearity..........................±2.0%........................................±2.0%

EffectiveElectricalAngle.....................340°+3°...................................340°+3°

EndVoltage.........................................0.5%maximum.........................0.5%maximum

OutputSmoothness.............................0.1%..........................................0.1%

DielectricWithstandingVoltage(MIL-STD-202,Method301)

6539

3.170+.000/-.008

(.1248+.0000/-.0003)

12.70.38

(.500.015)

1.57

(.062)

DIA.SHAFT

.25

455x

CHAMFER

(.010)

1.57

(.062)

1.57

19.050+000/-.012

(.750+.0000/-.0005)

SeaLevel.........................................750VACminimum.....................750VACminimum

PowerRating(VoltageLimitedByPowerDissipationor300VAC,WhicheverisLess)

(.062)

+70

°C..............................................1.0watt.......................................1.0watt

°C............................................0watt..........................................0watt

InsulationResistance(500VDC)........500megohmsminimum.............500megohmsminimum

+125

22.23

(.875)

DIA.

Resolution............................................Essentiallyin?nite.......................Essentiallyin?nite

19.81

(.780)

DIA.

EnvironmentalCharacteristics1

.51

(.020)

REF

OperatingTemperatureRange............+1°Cto+125°C........................-40°Cto+125°C

StorageTemperatureRange...............-65°Cto+125°C.......................-65°Cto+125°C

TemperatureCoef?cient

OverStorageTemperatureRange......±500ppm/°Cmaximum..............±500ppm/°Cmaximum

Vibration..............................................15G...........................................15G

WiperBounce..................................0.1millisecondmaximum...........0.1millisecondmaximum

TotalResistanceShift......................±10%.........................................±10%

VoltageRatioShift...........................±0.5%........................................±0.5%

Shock...................................................50G...........................................50G

WiperBounce..................................0.1millisecondmaximum...........0.1millisecondmaximum

TotalResistanceShift......................±5%...........................................±5%

VoltageRatioShift...........................±0.5%........................................±0.5%

LoadLife..............................................1,000hours,1watt.....................1,000hours,1watt

TotalResistanceShift......................±10%.........................................±10%

RotationalLife(NoLoad).....................10,000,000shaftrevolutions......10,000,000shaftrevolutions

TotalResistanceShift......................±10%maximum........................±10%maximum

MoistureResistance(MIL-STD-202,Method106)

12.70.79

(.500.031)

3.18

(.125)

6639

11.25.38

(.443.015)

10.317+.000/-.051

DIA.

(.4062+.000/-.002)

6.342+.000/-.008

(.2497+.0000/-.0003)

DIA.SHAFT

1.57

(.062)

.25

(.010)

45

5

1.19

CHAMFER

1.60

X

(.063)

SLOT

22.23

(.875)

DIA.

(.047)

TotalResistanceShift......................±15%.........................................±15%

IPRating..............................................IP40...........................................IP40

MechanicalCharacteristics1

.25

3/8"-32UNEF

(.010)

REF

9.53.79

MechanicalAngle..........................................................Continuous,Stops(340°+8°,-0°)available

Torque(Starting&Running)2...................................................................0.40N-cm(0.5oz.-in.)max.

Mounting..............................................................................170-200N-cm(15-18lb.-in.)maximum

ShaftRunout.................................................................................................0.13mm(0.005in.)T.I.R.

LateralRunout..............................................................................................0.08mm(0.003in.)T.I.R.

ShaftEndPlay..............................................................................................0.13mm(0.005in.)T.I.R.

ShaftRadialPlay..........................................................................................0.13mm(0.005in.)T.I.R.

PilotDiameterRunout................................................................................0.06mm(0.0025in.)T.I.R.

Backlash.......................................................................................................................0.1omaximum

Weight.......................................................18gm(6539ServoMount),24gm(6639BushingMount)

Terminals...................................................................................................................RearTurretType

SolderingCondition

3.18

(.125)

(.375.031)

22.23.76

(.875.03)

65/6639

BOURNS

2

ManualSoldering.................................96.5Sn/3.0Ag/0.5Cusolidwireorno-cleanrosincoredwire

370°C(700°F)max.for3seconds

WaveSoldering........................................................96.5Sn/3.0Ag/0.5Cusolderwithno-clean?ux

260°C(500°F)max.for5seconds

4.83

R

CW

(.19)

3

1

Washprocesses..................................................................................................Notrecommended

Marking.................................................Manufacturer’snameandpartnumber,resistancevalueand

tolerance,linearitytolerance,wiringdiagram,anddatecode.

Ganging(MultipleSectionPots)..................................................................................1cupmaximum

Hardware(6639only).................................Onelockwasher(H-37-2)andonemountingnut(H-38-2)

isshippedwithpotentiometer.

30

TYP.

3

TOLERANCES:EXCEPTWHERENOTED

.51.13

(.020)

DECIMALS:.XX

.XXX

(.005)

1

22.82N-cm(4.0oz.-in.)max.at-40°C.

Atroomambient:+25°Cnominaland50%relativehumiditynominal,exceptasnoted.

FRACTIONS:1/64

MM

DIMENSIONS:

(IN.)

RecommendedPartNumbers

2WIPER

PartNumber

6539S-1-102

6539S-1-502

6539S-1-103

Resistance(Ω)

1,000

5,000

PartNumbers

ContinuousTurnMechanicalStops

Resistance(Ω)

CCW1

3

CW

6639S-1-102

6639S-1-202

6639S-1-502

6639S-1-103

6639S-1-203

6639S-301-102

1,000

2,000

5,000

10,000

CLOCKWISE

6639S-301-502

6639S-301-103

BOLDFACELISTINGSAREINSTOCKANDREADILY

AVAILABLETHROUGHDISTRIBUTION.

10,000

20,000

FOROTHEROPTIONSCONSULTFACTORY.

*RoHSDirective2002/95/ECJan27,2003includingAnnex.

Speci?cationsares

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