Features
■ Essentially infinite resolution
■ Excellent rotational life
■ High quality, rugged construction
■ General purpose applications
■ Non-standard features available
■ Cost and space saving
6539/6639 - Precision Potentiometer
1
Product Dimensions
Electrical Characteristics
6539 Servo Mount
6639 Bushing Mount
Standard Resistance Range................1 K to 100 K ohms......................1 K to 100 K ohms
Total Resistance Tolerance..................±1ꢀ ꢁ.........................................±1ꢀ ꢁ
Independent Linearity..........................±±.0 ꢁ........................................±±.0 ꢁ
Effective Electrical Angle .....................340 ° +3 °...................................340 ° +3 °
End Voltage.........................................0.ꢀ ꢁ maximum .........................0.ꢀ ꢁ maximum
Output Smoothness.............................0.1 ꢁ..........................................0.1 ꢁ
Dielectric Withstanding Voltage (MIL-STD-±0±, Method 301)
6539
3.170 +.000/-.008
(.1248+.0000/-.0003ꢀ
12.70 .38
(.500 .015ꢀ
1.57
(.062ꢀ
DIA. SHAFT
.25
45° 5 ° x
(.010ꢀ
1.57
(.062ꢀ
1.57
CHAMFER
19.050+ 000/-.012
(.750+.0000/-.0005ꢀ
Sea Level.........................................7ꢀ0 VAC minimum .....................7ꢀ0 VAC minimum
Power Rating (Voltage Limited By Power Dissipation or 300 VAC, Whichever is Less)
+70 °C..............................................1.0 watt.......................................1.0 watt
+1±ꢀ °C............................................0 watt..........................................0 watt
Insulation Resistance (ꢀ00 VDC) ........ꢀ00 megohms minimum.............ꢀ00 megohms minimum
Resolution............................................Essentially infinite.......................Essentially infinite
(.062ꢀ
22.23
(.875ꢀ
DIA.
19.81
(.780ꢀ
DIA.
1
.51
(.020ꢀ
REF
Environmental Characteristics
Operating Temperature Range............+1 °C to +1±ꢀ °C........................-40 °C to +1±ꢀ °C
Storage Temperature Range ...............-6ꢀ °C to +1±ꢀ °C.......................-6ꢀ °C to +1±ꢀ °C
Temperature Coefficient
12.70 .79
(.500 .031ꢀ
3.18
(.125ꢀ
Over Storage Temperature Range ......±ꢀ00 ppmꢂ°C maximum..............±ꢀ00 ppmꢂ°C maximum
Vibration ..............................................1ꢀ G ...........................................1ꢀ G
Wiper Bounce..................................0.1 millisecond maximum...........0.1 millisecond maximum
Total Resistance Shift......................±10 ꢁ.........................................±10 ꢁ
Voltage Ratio Shift...........................±0.ꢀ ꢁ........................................±0.ꢀ ꢁ
Shock...................................................ꢀ0 G ...........................................ꢀ0 G
Wiper Bounce..................................0.1 millisecond maximum...........0.1 millisecond maximum
Total Resistance Shift......................±ꢀ ꢁ...........................................±ꢀ ꢁ
Voltage Ratio Shift...........................±0.ꢀ ꢁ........................................±0.ꢀ ꢁ
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-±0±, Method 106)
6639
10.317+.000/-.051
(.4062+.000/-.002ꢀ
11.25 .38
(.443 .015ꢀ
DIA.
6.342+.000/-.008
1.57
(.062ꢀ
(.2497+.0000/-.0003ꢀ
DIA. SHAFT
.25
45° 5 ° x
CHAMFER
(.010ꢀ
1.60
1.19
SLOT
X
22.23
(.875ꢀ
DIA.
(.047ꢀ (.063ꢀ
Total Resistance Shift......................±1ꢀ ꢁ.........................................±1ꢀ ꢁ
IP Rating..............................................IP 40...........................................IP 40
.25
1
3/8 " - 32 UNEF (.010ꢀ
REF
Mechanical Characteristics
9.53 .79
(.375 .031ꢀ
22.23 .76
(.875 .03ꢀ
Mechanical Angle ..........................................................Continuous, Stops (340 ° +8 °, -0 °) available
3.18
(.125ꢀ
±
Torque (Starting & Running) ...................................................................0.40 N-cm (0.ꢀ oz.-in.) max.
Mounting..............................................................................170-±00 N-cm (1ꢀ-18 lb.-in.) maximum
Shaft Runout.................................................................................................0.13 mm (0.00ꢀ in.) T.I.R.
Lateral Runout..............................................................................................0.08 mm (0.003 in.) T.I.R.
Shaft End Play..............................................................................................0.13 mm (0.00ꢀ in.) T.I.R.
Shaft Radial Play..........................................................................................0.13 mm (0.00ꢀ in.) T.I.R.
Pilot Diameter Runout ................................................................................0.06 mm (0.00±ꢀ in.) T.I.R.
Backlash....................................................................................................................... 0.1 º maximum
Weight ....................................................... 18 gm (6ꢀ39 Servo Mount), ±4 gm (6639 Bushing Mount)
Terminals................................................................................................................... Rear Turret Type
Soldering Condition
65/6639
2
CW
4.83
R
(.19ꢀ
3
1
Manual Soldering.................................96.ꢀSnꢂ3.0Agꢂ0.ꢀCu solid wire or no-clean rosin cored wire
370 °C (700 °F) max. for 3 seconds
Wave Soldering ........................................................ 96.ꢀSnꢂ3.0Agꢂ0.ꢀCu solder with no-clean flux
±60 °C (ꢀ00 °F) max. for ꢀ seconds
Wash processes ..................................................................................................Not recommended
Marking................................................. Manufacturer’s name and part number, resistance value and
tolerance, linearity tolerance, wiring diagram, and date code.
30 ° 3 °
TYP.
TOLERANCES: EXCEPT WHERE NOTED
Ganging (Multiple Section Pots)..................................................................................1 cup maximum
Hardware (6639 only).................................One lockwasher (H-37-±) and one mounting nut (H-38-±)
is shipped with potentiometer.
.51
(.020ꢀ
.13
(.005ꢀ
DECIMALS: .XX
.XXX
FRACTIONS: 1/64
MM
DIMENSIONS:
(IN.ꢀ
1
±
At room ambient: +±ꢀ °C nominal and ꢀ0 ꢁ relative humidity nominal, except as noted.
±.8± N-cm (4.0 oz.-in.) max. at -40 °C.
WIPER
2
CW
CCW
3
1
CLOCKWISE
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
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