Features Repeatable settings Resolution to 0.001 % Digital display provides excellent readability Snap-in panel mount RoHS compliant* 3680 Family - Precision Potentiometer 1 Product Dimensions Electrical Characteristics Standard Resistance Range.........................................................................................10 ohms to 1 megohm 3680 a Total Resistance Tolerance .......................................................................................................................3 % Dielectric Withstanding Voltage (MIL-STD-202, Method 301) Sea Level ....................................................................................................................1,000 VAC minimum Power Rating (Voltage Limited By Power Dissipation or 500 VAC, Whichever is Less) +25 C ............................................................................................................................................. 2 watts 1 2 3 +85 C ................................................................................................................................................ 0 watt Insulation Resistance (500 VDC) ........................................................................... 1,000 megohms minimum Resolution 3681 .....................................................................................................................................................10 % 3682 .......................................................................................................................................................1 % 3683 ....................................................................................................................................................0.1 % 3684 ..................................................................................................................................................0.01 % 3 3685 ................................................................................................................................................0.001 % Absolute Minimum Resistance .......................................... 3 ohms or 0.2 % maximum (whichever is greater) 2 Accuracy (Dial Reading to Output Ratio)................................................................................1.0 % full scale 1 1 Environmental Characteristics Operating Temperature Range .............................................................................................. -25 C to +85 C Storage Temperature Range ................................................................................................. -25 C to +85 C Temperature Coef cient Over Storage Temperature Range ...................................... 100 ppm/C maximum Vibration ...................................................................................................................................................10 G Wiper Bounce ......................................................................................................0.1 millisecond maximum Total Resistance Shift ..........................................................................................................1 % maximum Voltage Ratio Shift ............................................................................................................0.2 % maximum Shock........................................................................................................................................................50 G Wiper Bounce ......................................................................................................0.1 millisecond maximum Total Resistance Shift ..........................................................................................................1 % maximum Voltage Ratio Shift ............................................................................................................0.2 % maximum Load Life .......................................................................................................................... 1,000 hours, 2 watts Total Resistance Shift ..........................................................................................................2 % maximum c d Rotational Life..................................................................................... 75,000 button operations each decade Total Resistance Shift ..........................................................................................................2 % maximum b IP Rating .................................................................................................................................................. IP 40 7.77 .38 1 (.306 .015) Mechanical Characteristics Weight .............................................3681 (9 gm) 3682 (16 gm) 3683 (23 gm) 3684 (30 gm) 3685 (37 gm) 7.87 Terminals ............................................................................2.79 mm (0.11 in.) wide x .41 mm (.016 in.) thick, (.31) tinned solder lugs for 3 20 AWG wires e Soldering Condition Manual Soldering...................................................................... 96.5Sn/3.0Ag/0.5Cu solid wire or no-clean 23.62 20.57 rosin cored wire 370 C (700 F) max. for 3 seconds (.93) (.810) Wave Soldering ................................96.5Sn/3.0Ag/0.5Cu solder with no-clean ux 260 C (500 F) max. for 5 seconds Wash processes .............................................................................................................Not recommended 8.38 .38 Marking ...........................................Manufacturers name and part number, resistance value and date code. PANEL (.33 .015) .81 Ganging (Multiple Section Potentiometers) ...........................................................Up to 5 decades maximum MIN. (.032) Readout Marking ................................................................................................................... 10 positions, 0-9 3.18 Actuating Force .............................................................................................. 19 to 29 oz. on detent decades MAX. 3.18 (.125) Actuating Force Variation ........................................................................................................ 4 oz. maximum (.125) 26.67 1 (1.050) At room ambient: +25 C nominal and 50 % relative humidity nominal, except as noted. NOTE: Terminals 1 & 3 are reversed from illustration for models 3682 and 3684. TOLERANCES: EXCEPT WHERE NOTED .38 .13 Product Dimensions DECIMALS: .XX .XXX (.015) (.005) FRACTIONS: 1/64 Dimensions Weight (Approx.) MM DIMENSIONS: Model a b c d e .381 (.015) oz. gms. (IN.) 3681 16.51 (.650) 14.99 (.590) 9.91 (.39) 4.19 (.165) .336 9.5 3682 26.67 (1.05) 25.15 (.99) 10.67 (.42) 11.94 (.47) 8.38 (.330) .576 16.5 WIPER 2 3683 37.08 (1.46) 35.31 (1.39) 18.54 (.73) 11.94 (.47) 4.19 (.165) .824 23.5 3684 47.50 (1.87) 45.47 (1.79) 30.73 (1.21) 11.94 (.47) 8.38 (.330) 1.072 30.5 3685 57.66 (2.270) 55.63 (2.190) 39.12 (1.540) 11.94 (.47) 4.19 (.165) 1.320 37.5 1 3 INCR. Dimensions Model f .010 (.254) g .010 (.254) RECOMMENDED f PANEL CUTOUT 3681 21.08 (.830) 15.75 (.620) 3682 21.08 (.830) 25.91 (1.020) WARNING 3683 21.08 (.830) 36.07 (1.420) Cancer and Reproductive Harm 3684 21.08 (.830) 46.23 (1.820) g .76 3685 21.08 (.830) 56.39 (2.220) R MAX. www.P65Warnings.ca.gov (.03) *RoHS Directive 2015/863, Mar 31, 2015 and Annex. Specications are subject to change without notice. Users should verify actual device performance in their specic applications. The products described herein and this document are subject to specic disclaimers as set forth on the last page of this document, and at www.bourns.com/legal/disclaimer.pdf. *RoHS COMPLIANT 3680 Family - Precision Potentiometer Recommended Part Numbers 3681S-1 3682S-1 3683S-1 3684S-1 3685S-1 Resistance 1 2 3 4 5 () Decade Decade Decade Decade Decade 50 -500L 100 -101L 200 -201L 500 -501L -501L 1,000 -102L -102L -102L 2,000 -202L -202L -202L 5,000 -502L -502L -502L 10 K -103L -103L -103L -103L 20 K -203L -203L -203L 50 K -503L -503L -503L 100 K -104L -104L -104L -104L -104L 500 K -504L -504L -504L 1 Meg -105L -105L -105L -105L BOLDFACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. FOR OTHER OPTIONS CONSULT FACTORY. ROHS IDENTIFIER: L = COMPLIANT Asia-Pacific: Tel: +886-2 2562-4117 Email: asiacus bourns.com EMEA: Tel: +36 88 885 877 Email: eurocus bourns.com The Americas: Tel: +1-951 781-5500 Email: americus bourns.com www.bourns.com REV. 10/19 Specications are subject to change without notice. Users should verify actual device performance in their specic applications. The products described herein and this document are subject to specic disclaimers as set forth on the last page of this document, and at www.bourns.com/legal/disclaimer.pdf.