BOURNS 3683

oH
V SC
AV ER OM
AI SIO PL
LA N IA
BL S NT
E
Features
■
*R
■
■
■
Repeatable settings
Resolution to 0.001 %
Digital display provides excellent
readability
Snap-in panel mount
3680 Family - Precision Potentiometer
Electrical Characteristics1
Product Dimensions
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
3680
a
1
2
3
3
2
1
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
c
d
b
7.77 ± .38
(.306 ± .015)
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.
7.87
(.31)
e
23.62
(.93)
20.57
(.810)
8.38 ± .38
(.33 ± .015)
Product Dimensions
Model
3681
3682
3683
3684
3685
Model
3681
3682
3683
3684
3685
Dimensions
Weight (Approx.)
b
c
d
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)
—
10.67 (.42)
18.54 (.73)
30.73 (1.21)
39.12 (1.540)
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)
oz.
gms.
.336
.576
.824
1.072
1.320
9.5
16.5
23.5
30.5
37.5
TOLERANCES: EXCEPT WHERE NOTED
.38
.13
DECIMALS: .XX ±
.XXX ±
(.015)
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
2
Dimensions
f –.010 (–.254)
(.830)
(.830)
(.830)
(.830)
(.830)
3.18
(.125)
26.67
(1.050)
a
21.08
21.08
21.08
21.08
21.08
PANEL
.81
(.032)
3.18
MAX.
(.125)
MIN.
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
g
3
1
f
WIPER
INCR.
.76
R MAX.
(.03)
*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.
3680 Family - Precision Potentiometer
Recommended Part Numbers
Resistance
(Ω)
50
100
200
500
1,000
2,000
5,000
10 K
20 K
50 K
100 K
500 K
1 Meg
3681S-1
3682S-1
3683S-1
3684S-1
1
2
3
4
5
Decade
Decade
Decade
Decade
Decade
-102L
-202L
-502L
-103L
-203L
-503L
-104L
-504L
-105L
-103L
-203L
-503L
-104L
-504L
-105L
-104L
-504L
-105L
-500L
-101L
-201L
-501L
-102L
-202L
-502L
-103L
-104L
-501L
-102L
-202L
-502L
-103L
-203L
-503L
-104L
-105L
3685S-1
BOLDFACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
TERMINALS:
L = RoHS COMPLIANT
BLANK = STANDARD
REV. 06/06
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.