Features ■ ■ ■ ■ Repeatable settings Resolution to 0.001% Digital display provides excellent readability Snap-in panel mount 3680 - Precision Potentiometer Electrical Characteristics1 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) +25°C ..................................................................................................................2 watts +85°C .....................................................................................................................0 watt Dielectric Withstanding Voltage ..............................................MIL-STD-202, Method 301 Sea Level.........................................................................................1,000 VAC minimum Accuracy (Dial Reading to Output Ratio)..................................................±0.5% full scale 3680 a 1 2 3 3 2 1 Environmental Characteristics Operating Temperature Range ..................................................................-25°C to +85°C 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 1 c Mechanical Characteristics1 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 ...........Manufacturer’s name and part number, resistance value and date code 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. Dimensions 3682 3683 7.77 ± .38 (.306 ± .015) 7.87 (.31) e 23.62 (.93) 20.57 (.810) 1 Model d b Weight (Approx.) a b c d e ±.015 (±.381) oz. gms. 26.67 (1.050) 37.08 (1.460) 25.15 (.990) 35.31 (1.390) 10.67 (.420) 18.54 (.730) 11.94 (.47) 11.94 (.47) 8.38 (.330) 4.19 (.165) .576 .824 16.5 23.5 8.38 ± .38 (.33 ± .015) PANEL .81 (.032) 3.18 MAX. (.125) MIN. 3.18 (.125) 26.67 (1.050) Model 3682 3683 Dimensions f ±.010 (±.254) g ±.010 (±.254) 21.08 (.830) 21.08 (.830) 25.91 (1.020) 36.07 (1.420) Recommended Part Numbers Resistance (Ω) 1,000 5,000 10K 50K 100K 3682S-1 2 Decade 3683S-1 3 Decade -102 -502 -103 -102 -502 -103 -503 -104 RECOMMENDED PANEL CUTOUT g TOLERANCES: EXCEPT WHERE NOTED .38 .13 DECIMALS: .XX ± .XXX ± (.015) (.005) FRACTIONS: ±1/64 MM DIMENSIONS: (IN.) f .76 R MAX. (.03) 2 WIPER 3 1 INCR. BOLD-FACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. FOR OTHER OPTIONS CONSULT FACTORY. Specifications are subject to change without notice.