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
3680
Standard Resistance Range.........................................................................................10 ohms to 1 megohm
Total Resistance Tolerance.......................................................................................................................±± ꢀ
Dielectric Withstanding Voltage (MIL-STD-202, Method ±01)
a
Sea Level ....................................................................................................................1,000 VAC minimum
Power Rating (Voltage Limited By Power Dissipation or 500 VAC, Whichever is Less)
+25 °C ............................................................................................................................................. 2 watts
+85 °C ................................................................................................................................................ 0 watt
Insulation Resistance (500 VDC) ........................................................................... 1,000 megohms minimum
Resolution
1
2
3
±681 .....................................................................................................................................................10 ꢀ
±682 .......................................................................................................................................................1 ꢀ
±68± ....................................................................................................................................................0.1 ꢀ
±684 ..................................................................................................................................................0.01 ꢀ
±685 ................................................................................................................................................0.001 ꢀ
Absolute Minimum Resistance.......................................... ± ohms or 0.2 ꢀ maximum (whichever is greater)
Accuracy (Dial Reading to Output Ratio)................................................................................±1.0 ꢀ ꢁull scale
3
1
2
1
Environmental Characteristics
Operating Temperature Range.............................................................................................. -25 °C to +85 °C
Storage Temperature Range ................................................................................................. -25 °C to +85 °C
Temperature Coeꢁficient Over Storage Temperature Range ...................................... ±100 ppmꢂ°C maximum
Vibration ...................................................................................................................................................10 G
Wiper Bounce...................................................................................................... 0.1 millisecond maximum
Total Resistance Shiꢁt..........................................................................................................±1 ꢀ maximum
Voltage Ratio Shiꢁt............................................................................................................±0.2 ꢀ maximum
Shock........................................................................................................................................................50 G
Wiper Bounce...................................................................................................... 0.1 millisecond maximum
Total Resistance Shiꢁt..........................................................................................................±1 ꢀ maximum
Voltage Ratio Shiꢁt............................................................................................................±0.2 ꢀ maximum
Load Liꢁe.......................................................................................................................... 1,000 hours, 2 watts
Total Resistance Shiꢁt..........................................................................................................±2 ꢀ maximum
Rotational Liꢁe..................................................................................... 75,000 button operations each decade
Total Resistance Shiꢁt..........................................................................................................±2 ꢀ maximum
IP Rating.................................................................................................................................................. IP 40
c
d
b
7.77 ± .38
1
(.306 ± .015)
Mechanical Characteristics
Weight .............................................±681 (9 gm); ±682 (16 gm); ±68± (2± gm); ±684 (±0 gm); ±685 (±7 gm)
Terminals ............................................................................2.79 mm (0.11 in.) wide x .41 mm (.016 in.) thick,
tinned solder lugs ꢁor ± #20 AWG wires
7.87
(.31)
e
Soldering Condition
Manual Soldering...................................................................... 96.5Snꢂ±.0Agꢂ0.5Cu solid wire or no-clean
rosin cored wire; ±70 °C (700 °F) max. ꢁor ± seconds
23.62
(.93)
20.57
(.810)
Wave Soldering ................................96.5Snꢂ±.0Agꢂ0.5Cu solder with no-clean flux; 260 °C (500 °F) max.
ꢁor 5 seconds
Wash processes............................................................................................................. Not recommended
Marking...........................................Manuꢁacturer’s name and part number, resistance value and date code.
Ganging (Multiple Section Potentiometers)...........................................................Up to 5 decades maximum
Readout Marking................................................................................................................... 10 positions, 0-9
Actuating Force .............................................................................................. 19 to 29 oz. on detent decades
Actuating Force Variation ........................................................................................................ 4 oz. maximum
8.38 ± .38
(.33 ± .015)
PANEL
.81
(.032)
3.18
MIN.
3.18
(.125)
MAX.
(.125)
26.67
(1.050)
1
At room ambient: +25 °C nominal and 50 ꢀ relative humidity nominal, except as noted.
NOTE: Terminals 1 & ± are reversed ꢁrom illustration ꢁor models ±682 and ±684.
TOLERANCES: EXCEPT WHERE NOTED
.38
(.015)
.13
(.005)
Product Dimensions
DECIMALS: .XX ±
.XXX ±
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
Dimensions
c
Weight (Approx.)
Model
a
b
d
e ±.ꢀ38 (±.±80)
oz.
gms.
3681
3682
3683
3684
3685
16.51 (.650)
26.67 (1.05)
37.08 (1.46)
47.50 (1.87)
57.66 (2.270)
14.99 (.590)
25.15 (.99)
35.31 (1.39)
45.47 (1.79)
55.63 (2.190)
—
9.91 (.39)
11.94 (.47)
11.94 (.47)
11.94 (.47)
11.94 (.47)
4.19 (.165)
8.38 (.330)
4.19 (.165)
8.38 (.330)
4.19 (.165)
.336
.576
.824
1.072
1.320
9.5
10.67 (.42)
18.54 (.73)
30.73 (1.21)
39.12 (1.540)
16.5
23.5
30.5
37.5
WIPER
2
3
1
INCR.
Dimensions
*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.
Model
f ±.±8± (±.ꢁ02)
g ±.±8± (±.ꢁ02)
RECOMMENDED
PANEL CUTOUT
f
3681
3682
3683
3684
3685
21.08 (.830)
21.08 (.830)
21.08 (.830)
21.08 (.830)
21.08 (.830)
15.75 (.620)
25.91 (1.020)
36.07 (1.420)
46.23 (1.820)
56.39 (2.220)
g
.76
(.03)
R MAX.
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