S N R Features n Essentially infinite resolution n Excellent rotational life n High quality, rugged construction n General purpose applications n Non-standard features available n Cost and space saving 6539/6639 - Precision Potentiometer 1 Electrical Characteristics 6539 Servo Mount 6639 Bushing Mount Product Dimensions Standard Resistance Range................1 K to 100 K ohms......................1 K to 100 K ohms 6539 3.170 +.000/-.008 12.70 .38 Total Resistance Tolerance ..................15 % .........................................15 % (.1248+.0000/-.0003) (.500 .015) Independent Linearity ..........................2.0 % ........................................2.0 % 1.57 DIA. SHAFT Effective Electrical Angle .....................340 +3 ...................................340 +3 .25 (.062) 45 5 x (.010) End Voltage .........................................0.5 % maximum .........................0.5 % maximum 1.57 CHAMFER Output Smoothness .............................0.1 % ..........................................0.1 % (.062) 19.050+ 000/-.012 Dielectric Withstanding Voltage (MIL-STD-202, Method 301) 1.57 (.750+.0000/-.0005) Sea Level .........................................750 VAC minimum .....................750 VAC minimum (.062) 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 22.23 Insulation Resistance (500 VDC) ........500 megohms minimum .............500 megohms minimum (.875) 19.81 Resolution............................................Essentially infinite .......................Essentially infinite DIA. (.780) DIA. 1 .51 Environmental Characteristics (.020) Operating Temperature Range ............+1 C to +125 C ........................-40 C to +125 C REF Storage Temperature Range ...............-65 C to +125 C .......................-65 C to +125 C Temperature Coefficient 12.70 .79 3.18 Over Storage Temperature Range ......500 ppm/C maximum..............500 ppm/C maximum (.500 .031) (.125) Vibration ..............................................15 G ...........................................15 G Wiper Bounce ..................................0.1 millisecond maximum ...........0.1 millisecond maximum 10.317+.000/-.051 6639 DIA. Total Resistance Shift ......................10 % .........................................10 % (.4062+.000/-.002) 11.25 .38 6.342+.000/-.008 Voltage Ratio Shift ...........................0.5 % ........................................0.5 % DIA. (.443 .015) (.2497+.000/-.0003) Shock...................................................50 G ...........................................50 G 6.342+.000/-.008 Wiper Bounce ..................................0.1 millisecond maximum ...........0.1 millisecond maximum 1.57 (.2497+.0000/-.0003) Total Resistance Shift ......................5 % ...........................................5 % (.062) DIA. SHAFT Voltage Ratio Shift ...........................0.5 % ........................................0.5 % .25 45 5 x CHAMFER Load Life ..............................................1,000 hours, 1 watt.....................1,000 hours, 1 watt (.010) Total Resistance Shift ......................10 % .........................................10 % 1.19 1.60 SLOT X Rotational Life (No Load).....................10,000,000 shaft revolutions ......10,000,000 shaft revolutions 22.23 (.047) (.063) Total Resistance Shift ......................10 % maximum ........................10 % maximum (.875) DIA. Moisture Resistance (MIL-STD-202, Method 106) Total Resistance Shift ......................15 % .........................................15 % IP Rating ..............................................IP 40 ...........................................IP 40 .25 1 Mechanical Characteristics 3/8 - 32 UNEF (.010) REF Mechanical Angle ..........................................................Continuous, Stops (340 +8 , -0 ) available 9.53 .79 3.18 Stop Strength (applies to -301 with mechanical stops only) ..................................22.6 N-cm (2 lb.-in.) (.125) (.375 .031) 2 Torque (Starting & Running) ...................................................................0.40 N-cm (0.5 oz.-in.) max. 22.23 .76 Mounting ..............................................................................170-200 N-cm (15-18 lb.-in.) maximum (.875 .03) Shaft Runout.................................................................................................0.13 mm (0.005 in.) T.I.R. Lateral Runout ..............................................................................................0.08 mm (0.003 in.) T.I.R. 5.537+.000/-.254 Shaft End Play ..............................................................................................0.13 mm (0.005 in.) T.I.R. (.218+.000/-.010) Shaft Radial Play ..........................................................................................0.13 mm (0.005 in.) T.I.R. 9.652 .254 Pilot Diameter Runout ................................................................................0.06 mm (0.0025 in.) T.I.R. (.380 .010) .381 Backlash ....................................................................................................................... 0.1 maximum R (.015) Weight ....................................................... 18 gm (6539 Servo Mount), 24 gm (6639 Bushing Mount) MAX. Terminals ................................................................................................................... Rear Turret Type Soldering Condition Flatted Shaft Manual Soldering .................................96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire Option 370 C (700 F) max. for 3 seconds Wave Soldering ........................................................ 96.5Sn/3.0Ag/0.5Cu solder with no-clean flux 260 C (500 F) max. for 5 seconds 65/6639 Wash processes ..................................................................................................Not recommended Marking ................................................. Manufacturers name and part number, resistance value and tolerance, linearity tolerance, wiring diagram, and date code. 2 Ganging (Multiple Section Pots) ..................................................................................1 cup maximum Hardware (6639 only) .................................One lockwasher (H-37-2) and one mounting nut (H-38-2) CW 4.83 R is shipped with potentiometer. (.19) 31 1 At room ambient: +25 C nominal and 50 % relative humidity nominal, except as noted. 2 2.82 N-cm (4.0 oz.-in.) max. at -40 C. 30 3 TYP. TOLERANCES: EXCEPT WHERE NOTED .51 .13 WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov DECIMALS: .XX .XXX (.020) (.005) *RoHS Directive 2015/863, Mar 31, 2015 and Annex. FRACTIONS: 1/64 Specifications are subject to change without notice. MM DIMENSIONS: Users should verify actual device performance in their specific applications. (IN.) The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. WIPER 2 CCW 3 CW 1 CLOCKWISE U O BS N R 6539 3.170 +.000/-.008 12.70 .38 (.1248+.0000/-.0003) (.500 .015) 1.57 DIA. SHAFT .25 (.062) 45 5 x (.010) 1.57 CHAMFER (.062) 19.050+ 000/-.012 1.57 (.750+.0000/-.0005) (.062) 22.23 (.875) 19.81 DIA. (.780) DIA51 (.020) REF 12.70 .79 3.18 (.500 .031) (.125) 10.317+.000/-.051 6639 DIA. (.4062+.000/-.002) 11.25 .38 6.342+.000/-.008 DIA. (.443 .015) (.2497+.000/-.0003) 6.342+.000/-.008 1.57 (.2497+.0000/-.0003) (.062) DIA. SHAFT .25 45 5 x CHAMFER (.010) 1.19 1.60 SLOT X 22.23 (.047) (.063) (.875) DIA25 3/8 - 32 UNEF (.010) REF 9.53 .79 3.18 (.375 .031) (.125) 22.23 .76 (.875 .03) 5.537+.000/-.254 (.218+.000/-.010) 9.652 .254 (.380 .010) .381 R (.015) MAX. Flatted Shaft Option 6539/6639 - Precision Potentiometer 65/6639 Standard Resistance Table Recommended Part Numbers 2 CW 4.83 R Part Number Resistance () Mechanical Resistance Resistance (.19) Part Number A/R Lug Shaft 31 Stop (Ohms) Code 6539S-1-102 1,000 1,000 102 6639S-1-RC No No Slotted 6539S-1-502 5,000 2,000 202 6639S-2-RC No No Flatted 6539S-1-103 10,000 5,000 502 6639S-3-RC No Yes Slotted 10,000 103 30 3 BOLDFACE LISTINGS ARE IN STOCK AND READILY TYP. 6639S-4-RC No Yes Flatted 20,000 203 AVAILABLE THROUGH DISTRIBUTION. 50,000 503 6639S-5-RC Yes Yes Slotted TOLERANCES: EXCEPT WHERE NOTED 100,000 104 .51 .13 FOR OTHER OPTIONS CONSULT FACTORY. 6639S-6-RC Yes Yes Flatted DECIMALS: .XX .XXX (.020) (.005) 6639S-7-RC Yes No Slotted FRACTIONS: 1/64 6639S-8-RC Yes No Flatted MM 2.46 - 3.81 DIMENSIONS: Schematic (IN.) (.097 - .150) OPTIONAL A/R LUG WIPER 1.59 .025 1.14 2 X (.0625 .0010) (.045) FROM MOUNTING SURFACE ON CCW 3 CW 1 2.46 - 3.81 PANEL 7.92 RADIUS CLOCKWISE (.097 - .150) (.312) HEX NUT PANEL MM HEX NUT DIMENSIONS: (IN.) LOCKWASHER Panel Thickness Dimensions POT (For Bushing Mount Only) 2.46 - 3.81 (.097 - .150) LOCKWASHER POT 10.44 .07 DIA. PANEL (.411 .003) HEX NUT 10.44 .07 DIA. Panel thickness and hole diameters are (.411 .003) recommended for best fit. However, customers may adjust the dimensions to suit their specific application. 0.127 Panel thickness and hole diameters are MM TOLERANCES: DIMENSIONS: LOCKWASHER (.005) (INCHES) recommended for best fit. However, customers POT may adjust the dimensions to suit their specific application. 0.127 MM DIMENSIONS: TOLERANCES: (.005) (INCHES) 10.44 .07 DIA. (.411 .003) REV. 06/20 Specifications are subject to change without notice. 7.93 R Users should verify actual device performance in their specific applications. (.312) The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. ADDITIONAL HOLE FOR ANTIROTATION PIN 1.78 +.07/-.02 DIA. (.070 +.003/-.001) Anti-rotation pin hole is shown at six o clock position for reference only. The actual location is determined by the customer s application. Refer to the front view of the potentiometer to see the location of the optional A/R pin. Panel thickness and hole diameters are recommended for best fit. However, customers may adjust the dimensions to suit their specific application. 0.127 MM DIMENSIONS: TOLERANCES: (.005) (INCHES) U O B