specifications are subject to change without notice. 3680 - precision potentiometer electrical characteristics 1 standard resistance range ..........................................................50 ohms to 1 megohm resistance tolerance..................................................................................................3% absolute minimum resistance .............3 ohms or 0.2% maximum (whichever is greater) resolution 3682........................................................................................................................... .1% 3683.........................................................................................................................0. 1% insulation resistance (500 vdc) ..............................................1,000 megohms minimum power rating (voltage limited by power dissipation or 500 vac, whichever is less) +25c ..................................................................................................................2 watts +85c .....................................................................................................................0 wat t dielectric withstanding voltage ..............................................mil-std-202, method 301 sea level.........................................................................................1,000 vac minimum accuracy (dial reading to output ratio)..................................................0.5% full scale environmental characteristics 1 operating temperature range ..................................................................-25c to +85c temperature coefficient ...............................................................100ppm/c maximum vibration...................................................................................................................... .10g wiper bounce .........................................................................0.1 millisecond maximum total resistance shift ..............................................................................1% maximum voltage ratio shift ................................................................................0.2% maximum shock.......................................................................................................................... .50g 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 mechanical characteristics 1 expected life .......................................................75,000 button operations each decade total resistance shift ..............................................................................2% maximum terminals.................................................0.11 in. (2.79mm) wide x .016 in. (.41mm) thick, tinned solder lugs for 3 #20 awg wires readout marking .....................................................................................10 positions, 0-9 markings ...........manufacturers name and part number, resistance value and date code 3680 7.77 ?.38 (.306 ?.015) 1 2 3 2 3 1 a c d b panel e 8.38 ?.38 (.33 ?.015) 1 3 incr. 2 wiper 7.87 (.31) 20.57 (.810) 23.62 (.93) 3.18 (.125) min. .81 (.032) max. 3.18 (.125) 26.67 (1.050) tolerances: except where noted .38 .13 decimals: .xx (.015) .xxx (.005) fractions: ?/64 mm dimensions: (in.) 1 at room ambient: +25c nominal and 50% relative humidity nominal, except as noted. note: terminals 1 & 3 are reversed from illustration for models 3682 and 3684. dimensions weight (approx.) model a b c d e .015 (.381) oz. gms. 3682 26.67 (1.050) 25.15 (.990) 10.67 (.420) 11.94 (.47) 8.38 (.330) .576 16.5 3683 37.08 (1.460) 35.31 (1.390) 18.54 (.730) 11.94 (.47) 4.19 (.165) .824 23.5 dimensions model f .010 (.254) g .010 (.254) 3682 21.08 (.830) 25.91 (1.020) 3683 21.08 (.830) 36.07 (1.420) recommended panel cutout f g .76 (.03) r max. features n repeatable settings n resolution to 0.001% n digital display provides excellent read- ability n snap-in panel mount resistance 3682s-1 3683s-1 ( w ) 23 decade decade 1,000 -102 -102 5,000 -502 -502 10k -103 -103 50k -503 100k -104 recommended part numbers bold-face listings are in stock and readily available through distribution. for other options consult factory.
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