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VE S CO
AV R M
AI SIO PL
LA N IA
BL S NT
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Features
■
■
■
■
Repeatable settings
Resolution to 0.001 %
Digital display provides excellent
readability
Snap-in panel mount
*R
3680 Family - Precision Potentiometer
Electrical Characteristics
1
Standard Resistance Range .............................................................................10 ohms to 1 megohm
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
+85 °C......................................................................................................................................0 watt
Insulation Resistance (500 VDC)..................................................................1,000 megohms minimum
Resolution
3681 ..........................................................................................................................................10 %
3682 ............................................................................................................................................1 %
3683 .........................................................................................................................................0.1 %
3684 .......................................................................................................................................0.01 %
3685 .....................................................................................................................................0.001 %
Absolute Minimum Resistance...............................3 ohms or 0.2 % maximum (whichever is greater)
Accuracy (Dial Reading to Output Ratio)....................................................................±1.0 % full scale
Product Dimensions
3680
a
1
2
3
3
2
1
Environmental Characteristics
1
Operating Temperature Range ...................................................................................-25 °C to +85 °C
Storage Temperature Range.......................................................................................-25 °C to +85 °C
Temperature Coefficient 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
Rotational Life .........................................................................75,000 button operations each decade
Total Resistance Shift ..............................................................................................±2 % maximum
IP Rating ........................................................................................................................................IP 40
c
b
d
Mechanical Characteristics
1
Weight....................................3681 (9 gm); 3682 (16 gm); 3683 (23 gm); 3684 (30 gm); 3685 (37 gm)
Terminals .....2.79 mm (0.11 in.) wide x .41 mm (.016 in.) thick, tinned solder lugs for 3 #20 AWG wires
Soldering Condition
Manual Soldering..........................................................96.5Sn/3.0Ag/0.5Cu solid wire or no-clean
rosin cored wire; 370 °C (700 °F) max. for 3 seconds
Wave Soldering ....................96.5Sn/3.0Ag/0.5Cu solder with no-clean flux; 260 °C (500 °F) max.
for 5 seconds
Wash processes..................................................................................................Not recommended
Marking ...............................Manufacturer’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
1
7.77
±
.38
(.306
±
.015)
7.87
(.31)
e
20.57
(.810)
23.62
(.93)
8.38
±
.38
(.33
±
.015)
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.
PANEL
.81
(.032)
3.18
MAX.
(.125)
MIN.
26.67
(1.050)
Product Dimensions
Model
3681
3682
3683
3684
3685
Dimensions
a
16.51 (.650)
26.67 (1.05)
37.08 (1.46)
47.50 (1.87)
57.66 (2.270)
b
14.99 (.590)
25.15 (.99)
35.31 (1.39)
45.47 (1.79)
55.63 (2.190)
Dimensions
f –.010 (–.254)
21.08
21.08
21.08
21.08
21.08
(.830)
(.830)
(.830)
(.830)
(.830)
g –.010 (–.254)
15.75 (.620)
25.91 (1.020)
36.07 (1.420)
46.23 (1.820)
56.39 (2.220)
RECOMMENDED
PANEL CUTOUT
f
c
—
10.67 (.42)
18.54 (.73)
30.73 (1.21)
39.12 (1.540)
d
9.91 (.39)
11.94 (.47)
11.94 (.47)
11.94 (.47)
11.94 (.47)
e –.381 (–.015)
4.19
8.38
4.19
8.38
4.19
(.165)
(.330)
(.165)
(.330)
(.165)
Weight (Approx.)
oz.
.336
.576
.824
1.072
1.320
gms.
9.5
16.5
23.5
30.5
37.5
3.18
(.125)
TOLERANCES: EXCEPT WHERE NOTED
.38
.13
DECIMALS: .XX
±
.XXX
±
(.015)
(.005)
FRACTIONS:
±1/64
MM
DIMENSIONS:
(IN.)
2
1
INCR.
WIPER
Model
3681
3682
3683
3684
3685
3
g
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
.76
R MAX.
(.03)
stm32/stm8
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