Features
s
s
s
s
Repeatable settings
Resolution to 0.001%
Digital display provides excellent read-
ability
Snap-in panel mount
3680 - Precision Potentiometer
Electrical Characteristics
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Standard Resistance Range ..........................................................50 ohms to 1 megohm
Resistance Tolerance..................................................................................................鹵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擄C ..................................................................................................................2 watts
+85擄C .....................................................................................................................0 watt
Dielectric Withstanding Voltage ..............................................MIL-STD-202, Method 301
Sea Level.........................................................................................1,000 VAC minimum
Accuracy (Dial Reading to Output Ratio)..................................................鹵0.5% full scale
Environmental Characteristics
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Operating Temperature Range ..................................................................-25擄C to +85擄C
Temperature Coefficient ...............................................................鹵100ppm/擄C maximum
Vibration.......................................................................................................................10G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................鹵1% maximum
Voltage Ratio Shift ................................................................................鹵0.2% maximum
Shock...........................................................................................................................50G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................鹵1% maximum
Voltage Ratio Shift ................................................................................鹵0.2% maximum
Load Life ............................................................................................1,000 hours, 2 watts
Total Resistance Shift ..............................................................................鹵2% maximum
c
d
b
7.77 鹵 .38
(.306 鹵 .015)
7.87
(.31)
e
20.57
(.810)
23.62
(.93)
3680
a
1
2
3
3
2
1
Mechanical Characteristics
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Expected Life .......................................................75,000 button operations each decade
Total Resistance Shift ..............................................................................鹵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鈥檚 name and part number, resistance value and date code
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At room ambient: +25擄C nominal and 50% relative humidity nominal, except as noted.
NOTE: Terminals 1 & 3 are reversed from illustration for models 3682 and 3684.
Model
3682
3683
Dimensions
a
26.67 (1.050)
37.08 (1.460)
b
25.15 (.990)
35.31 (1.390)
c
10.67 (.420)
18.54 (.730)
d
11.94 (.47)
11.94 (.47)
e 鹵.015 (鹵.381)
8.38 (.330)
4.19 (.165)
Weight (Approx.)
oz.
.576
.824
gms.
16.5
23.5
8.38 鹵 .38
(.33 鹵 .015)
PANEL
.81
MIN.
(.032)
3.18
MAX.
(.125)
26.67
(1.050)
3.18
(.125)
Model
3682
3683
Dimensions
f 鹵.010 (鹵.254)
21.08 (.830)
21.08 (.830)
g 鹵.010 (鹵.254)
25.91 (1.020)
36.07 (1.420)
RECOMMENDED
PANEL CUTOUT
f
TOLERANCES: EXCEPT WHERE NOTED
.38
.13
DECIMALS: .XX 鹵
.XXX 鹵
(.015)
(.005)
FRACTIONS: 鹵1/64
MM
DIMENSIONS:
(IN.)
.76
R MAX.
(.03)
Recommended Part Numbers
Resistance
(鈩?
1,000
5,000
10K
50K
100K
3682S-1
2
Decade
-102
-502
-103
3683S-1
3
Decade
-102
-502
-103
-503
-104
g
2
1
INCR.
WIPER
3
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
Specifications are subject to change without notice.
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