3680 Series Datasheet by Bourns Inc.

3680

7.77 ± .38

(.306 ± .015)

1 2 3

c d

PANEL

8.38 ± .38

(.33 ± .015)

INCR.

2WIPER

7.87

(.31)

20.57

(.810)

23.62

(.93)

3.18

(.125)

MIN. .81

(.032)

MAX. 3.18

(.125)

26.67

(1.050)

TOLERANCES: EXCEPT WHERE NOTED

.38 .13

DECIMALS: .XX ± (.015) .XXX ± (.005)

FRACTIONS: ±1/64

DIMENSIONS: (IN.)

Features

■ Repeatable settings

■ Resolution to 0.001 %

■ Digital display provides excellent readability

■ Snap-in panel mount

■ RoHS compliant*

3680 Family - Precision Potentiometer

*RoHS Directive 2002/95/EC Jan. 27, 2003 including

annex and RoHS Recast 2011/65/EU June 8, 2011.

Specifi cations are subject to change without notice.

The device characteristics and parameters in this data

sheet can and do vary in different applications and

actual device performance may vary over time.

Users should verify actual device performance

in their specifi c applications.

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 Coeffi cient 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 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

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 fl ux; 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 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

*RoHS COMPLIANT

Product Dimensions

Dimensions Weight (Approx.)

Model a b c d e ±.381 (±.015) oz. gms.

3681 16.51 (.650) 14.99 (.590) — 9.91 (.39) 4.19 (.165) .336 9.5

3682 26.67 (1.05) 25.15 (.99) 10.67 (.42) 11.94 (.47) 8.38 (.330) .576 16.5

3683 37.08 (1.46) 35.31 (1.39) 18.54 (.73) 11.94 (.47) 4.19 (.165) .824 23.5

3684 47.50 (1.87) 45.47 (1.79) 30.73 (1.21) 11.94 (.47) 8.38 (.330) 1.072 30.5

3685 57.66 (2.270) 55.63 (2.190) 39.12 (1.540) 11.94 (.47) 4.19 (.165) 1.320 37.5

Dimensions

Model f ±.010 (±.254) g ±.010 (±.254)

3681 21.08 (.830) 15.75 (.620)

3682 21.08 (.830) 25.91 (1.020)

3683 21.08 (.830) 36.07 (1.420)

3684 21.08 (.830) 46.23 (1.820)

3685 21.08 (.830) 56.39 (2.220)

RECOMMENDED

PANEL CUTOUT f

g .76

(.03) R MAX.

BOURNS‘

3680 Family - Precision Potentiometer

Recommended Part Numbers

Specifi cations are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their specifi c applications.

REV. 09/13

Resistance 3681S-1 3682S-1 3683S-1 3684S-1 3685S-1

(Ω) 1 2 3 4 5

Decade Decade Decade Decade Decade

50 -500L

100 -101L

200 -201L

500 -501L -501L

1,000 -102L -102L -102L

2,000 -202L -202L -202L

5,000 -502L -502L -502L