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Features

■

Repeatable settings

Resolution to 0.001 %

Digital display provides excellent

readability

Snap-in panel mount

3680 Family - Precision Potentiometer

Electrical Characteristics

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

Environmental Characteristics

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

Mechanical Characteristics

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

7.77

.38

(.306

.015)

7.87

(.31)

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

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)

Dimensions

f –.010 (–.254)

21.08

(.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

—

10.67 (.42)

18.54 (.73)

30.73 (1.21)

39.12 (1.540)

9.91 (.39)

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

DIMENSIONS:

(IN.)

INCR.

WIPER

Model

3681

3682

3683

3684

3685

*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)

3680 Family - Precision Potentiometer

Recommended Part Numbers

Resistance

3681S-1

3682S-1

3683S-1

3684S-1

3685S-1

(Ω)

100

200

500

1,000

2,000

5,000

10 K

20 K

50 K

100 K

500 K

1 Meg

Decade

-500L

-101L

-201L

-501L

-102L

-202L

-502L

-103L

-104L

-501L

-102L

-202L

-502L

-103L

-203L

-503L

-104L

-105L

-102L

-202L

-502L

-103L

-203L

-503L

-104L

-504L

-105L

-103L

-203L

-503L

-104L

-504L

-105L

-104L

-504L

-105L

BOLDFACE

LISTINGS ARE IN STOCK AND READILY

AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

RoHS IDENTIFIER:

L = COMPLIANT

BLANK = NON-COMPLIANT

REV. 05/07

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.