6539/6639 - Precision Potentiometer
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Features
Essentially infinite resolution
Excellent rotational life
High quality, rugged construction
General purpose applications
Non-standard features available
Cost and space saving
Electrical Characteristics
1
6539 Servo Mount
6639 Bushing Mount
Standard Resistance Range ..............1 K to 100 K ohms ..................1 K to 100 K ohms
Total Resistance Tolerance ................15 % ......................................15 %
Independent Linearity ........................2.0 % ......................................2.0 %
Effective Electrical Angle ....................340 +3 ..................................340 +3
End Voltage ........................................0.5 % maximum ......................0.5 % maximum
Output Smoothness............................0.1 % ........................................0.1 %
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Sea Level ........................................750 VAC minimum ....................750 VAC minimum
Power Rating (Voltage Limited By Power Dissipation or 300 VAC, Whichever is Less)
+70 C ............................................1.0 watt ....................................1.0 watt
+125 C ..........................................0 watt........................................0 watt
Insulation Resistance (500 VDC) ........500 megohms minimum ..........500 megohms minimum
Resolution ..........................................Essentially infinite ....................Essentially infinite
Environmental Characteristics
1
Operating Temperature Range ..........+1 C to +125 C ......................-40 C to +125 C
Storage Temperature Range ..............-65 C to +125 C ....................-65 C to +125 C
Temperature Coefficient
Over Storage Temperature Range ......500 ppm/C maximum ..........500 ppm/C maximum
Vibration..............................................15 G ..........................................15 G
Wiper Bounce ................................0.1 millisecond maximum ........0.1 millisecond maximum
Total Resistance Shift ....................10 % ......................................10 %
Voltage Ratio Shift..........................0.5 % ......................................0.5 %
Shock..................................................50 G ..........................................50 G
Wiper Bounce ................................0.1 millisecond maximum ........0.1 millisecond maximum
Total Resistance Shift ....................5 % ........................................5 %
Voltage Ratio Shift..........................0.5 % ......................................0.5 %
Load Life ............................................1,000 hours, 1 watt ..................1,000 hours, 1 watt
Total Resistance Shift ....................10 % ......................................10 %
Rotational Life (No Load) ....................10,000,000 shaft revolutions ....10,000,000 shaft revolutions
Total Resistance Shift ....................10 % maximum ......................10 % maximum
Moisture Resistance (MIL-STD-202, Method 106)
Total Resistance Shift ....................15 % ......................................15 %
IP Rating ............................................IP 40 ........................................IP 40
Mechanical Characteristics
1
Mechanical Angle ..........................................................Continuous, Stops (340 +8 , -0 ) available
Torque (Starting & Running)
2
.....................................................................0.40 N-cm (0.5 oz.-in.) max.
Mounting.............................................................................170-200 N-cm (15-18 lb.-in.) maximum
Shaft Runout..................................................................................................0.13 mm (0.005 in.) T.I.R.
Lateral Runout ...............................................................................................0.08 mm (0.003 in.) T.I.R.
Shaft End Play ...............................................................................................0.13 mm (0.005 in.) T.I.R.
Shaft Radial Play ...........................................................................................0.13 mm (0.005 in.) T.I.R.
Pilot Diameter Runout .................................................................................0.06 mm (0.0025 in.) T.I.R.
Backlash ........................................................................................................................0.1 maximum
Weight ........................................................18 gm (6539 Servo Mount), 24 gm (6639 Bushing Mount)
Terminals......................................................................................................................Rear Turret Type
Soldering Condition ....................Recommended hand soldering using Sn95/Ag5 no clean solder,
0.025 " wire diameter. Maximum temperature 399C (750 F) for 3 seconds.
No wash process to be used with no clean flux.
Marking .................................................Manufacturer's name and part number, resistance value and
tolerance, linearity tolerance, wiring diagram, and date code.
Ganging (Multiple Section Pots) ..................................................................................1 cup maximum
Hardware (6639 only)..................................One lockwasher (H-37-2) and one mounting nut (H-38-2)
is shipped with potentiometer.
Recommended Part Numbers
1
At room ambient: +25 C nominal and 50 % relative humidity, except as noted.
2
2.82 N-cm (4.0 oz.-in.) max. at -40 C.
Part Number
Resistance
()
6539S-1-102
1,000
6539S-1-502
5,000
6539S-1-103
10,000
Part Numbers
Resistance
Continuous Turn
Mechanical Stops
()
6639S-1-102 6639S-301-102
1,000
6639S-1-202
2,000
6639S-1-502 6639S-301-502
5,000
6639S-1-103 6639S-301-103
10,000
6639S-1-203
20,000
BOLDFACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
BO
URNS
3
1
2
30 3
TYP.
CW
65/6639
6539
6639
3/8 " - 32 UNEF
1
3
CW
CLOCKWISE
CCW
2
WIPER
12.70 .38
(.500 .015)
3.170 +.000/-.008
(.1248+.0000/-.0003)
DIA. SHAFT
45 5 x (.010)
CHAMFER
.25
1.57
(.062)
1.57
(.062)
1.57
(.062)
19.050+ 000/-.012
(.750+.0000/-.0005)
19.81
(.780)
DIA.
.51
(.020)
REF
12.70 .79
(.500 .031)
3.18
(.125)
22.23
(.875)
DIA.
11.25 .38
(.443.015)
1.57
(.062)
22.23
(.875)
DIA.
6.342+.000/-.008
(.2497+.0000/-.0003)
DIA. SHAFT
45 5 (.010) CHAMFER
.25
SLOT
(.047)
X
(.063)
1.19
1.60
10.317+.000/-.051
(.4062+.000/-.002)
DIA.
3.18
(.125)
.25
(.010)
REF
9.53 .79
(.375 .031)
22.23 .76
(.875 .03)
R
4.83
(.19)
TOLERANCES: EXCEPT WHERE NOTED
.51 .13
DECIMALS: .XX
(.020)
.XXX
(.005)
FRACTIONS: 1/64
MM
DIMENSIONS:
(IN.)
Product Dimensions
REV. 06/06
*RoHS COMPLIANT
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