3680 Datasheet, PDF (1/2 Pages) Bourns Electronic Solutions – Precision Potentiometer

*RoHS ^{VCEOARMVSAPIOILLINAASBNLTE}
Features
■ Repeatable settings
■ Resolution to 0.001 %
■ Digital display provides excellent
readability
■ Snap-in panel mount
3680 Family - Precision Potentiometer
Electrical Characteristics¹
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
Environmental Characteristics¹
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
Product Dimensions
3680
a
1
2
3
3
2
1
c
d
b
Mechanical Characteristics¹
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........................Recommended hand soldering using Sn95/Ag5 no clean solder,
0.025 ” wire diameter. Maximum temperature 399 °C (750 °F) for 3 seconds.
No wash process to be used with no clean flux.
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_{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.
Product Dimensions
Model
3681
3682
3683
3684
3685
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
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 (.165)
8.38 (.330)
4.19 (.165)
8.38 (.330)
4.19 (.165)
Weight (Approx.)
oz.
gms.
.336
9.5
.576
16.5
.824
23.5
1.072
30.5
1.320
37.5
e
20.57
(.810)
7.77 ± .38
(.306 ± .015)
7.87
(.31)
23.62
(.93)
8.38 ± .38
(.33 ± .015)
PANEL
MIN.
.81
(.032)
3.18
MAX. _(.125)
26.67
(1.050)
TOLERANCES: EXCEPT WHERE NOTED
DECIMALS:
.XX
±
.38
(.015)
.XXX
±
.13
(.005)
FRACTIONS: ±1/64
DIMENSIONS:
MM
(IN.)
3.18
(.125)
Model
3681
3682
3683
3684
3685
Dimensions
f –.010 (–.254) g –.010 (–.254)
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)
RECOMMENDED
PANEL CUTOUT
g
2 ^WIPER
1
3
f
INCR.
.76
(.03)
R
MAX.
*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.