Features
■ Bushing mount
■ Excellent resolution
■ Non-standard features and specifi cations
available
■ Small diameter
■ High rotational life
■ RoHS compliant*
3700/3701 - Precision Potentiometer
“Hybritron” is a registered trademark of Bourns, Inc.
*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.
Customers should verify actual device performance in
their specifi c applications.
Electrical Characteristics1 3700 Wirewound Element 3701 Hybritron® Element
Standard Resistance Range................100 to 100 K ohms .....................1 K to 100 K ohms
Total Resistance Tolerance .................. ±5 % ...........................................±10 %
Independent Linearity .......................... ±0.25 % ......................................±0.25 %
Effective Electrical Angle ..................... 3600 ° +10 °, -0 ° .......................3600 ° +10 °, -2 °
Absolute Minimum Resistance/ ...........1 ohm or 0.1 % maximum ..........Minimum voltage
Minimum Voltage (whichever is greater) 0.2 % maximum
Noise .................................................. 500 ohms ENR maximum ..........Output smoothness 0.1 %
maximum
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Sea Level .........................................1,000 VAC minimum ..................1,000 VAC minimum
Power Rating (Voltage Limited By Power Dissipation or 315 VAC, Whichever Is Less)
+70 °C ..............................................1 watt..........................................1 watt
+125 °C ............................................0 watt..........................................0 watt
Insulation Resistance (500 VDC) ........ 1,000 megohms minimum ..........1,000 megohms minimum
Resolution............................................See recommended part nos. .....Essentially infi nite
Environmental Characteristics1
Operating Temperature Range ............ +1 °C to +125 °C ........................+1 °C to +105 °C
Storage Temperature Range ...............-65 °C to +125 °C .......................-55 °C to +105 °C
Temperature Coeffi cient Over
Storage Temperature Range2 .........±50 ppm/°C maximum/unit .........±100 ppm/°C maximum/unit
Vibration .............................................. 20 G ...........................................20 G
Wiper Bounce ..................................0.1 millisecond maximum ...........0.1 millisecond maximum
Shock...................................................100 G .........................................100 G
Wiper Bounce ..................................0.1 millisecond maximum ...........0.1 millisecond maximum
Load Life ..............................................1,000 hours, 1 watt.....................1,000 hours, 1 watt
Total Resistance Shift ......................±2 % maximum ..........................±5 % maximum
Rotational Life (No Load).....................1,000,000 shaft revolutions2 .....4,000,000 shaft revolutions2
Total Resistance Shift ......................±5 % maximum ..........................±5 % maximum
Moisture Resistance (MIL-STD-202, Method 103, Condition B)
Total Resistance Shift ......................±2 % maximum ..........................±5 % maximum
IP Rating .............................................. IP 40 ...........................................IP 40
Mechanical Characteristics1
Stop Strength..........................................................................................14 N-cm (20 oz-in.) minimum
Mechanical Angle ......................................................................................................3600 ° +20 °, -0 °
Torque (Starting & Running) .....................................................................0.45 N-cm (0.6 oz.-in.) max.
Mounting ..................................................................................... 170-200 N-cm (15-18 lb.-in.) max.
Shaft Runout.................................................................................................0.05 mm (0.002 in.) T.I.R.
Lateral Runout ..............................................................................................0.13 mm (0.005 in.) T.I.R.
Shaft End Play ..............................................................................................0.13 mm (0.005 in.) T.I.R.
Shaft Radial Play ..........................................................................................0.08 mm (0.003 in.) T.I.R.
Pilot Diameter Runout ..................................................................................0.05 mm (0.002 in.) T.I.R.
Backlash ....................................................................................................................... 1.0 ° maximum
Weight .................................................................................................................Approximately 28 gm
Terminals ............................................Gold-plated solderlugs (3700) or gold-plated turret lugs (3701)
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
tolerance, linearity tolerance, wiring diagram, and date code
Ganging (Multiple Section Pots.) .................................................................................1 cup maximum
Hardware ................................................... One lockwasher (H-37-1) and one mounting unit (H-38-1)
is shipped with each potentiometer.
1At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.
2Consult manufacturer for complete specifi cation details.
*RoHS COMPLIANT
Product Dimensions
13
CCW CW
CW
2
12.2
(.48)
STANDOFFS
11.81
(.465)
12.70
(.500)
MOUNTING
SURFACE
3700S-1/3701H-1
3.30
(.13)
11.11
(7/16)
CCW CW
1/4"-32-UNEF-2ATHD
1.52
(.06)
WIPER
90 ° ± 5 °
7 ° ± 2 °
LOCKWASHER AND MOUNTING NUT
TO BE SUPPLIED WITH EACH UNIT
.28
(9/32)
25.40 ± .51
(1.00 ± .02)
2.37 + .00/- .01
(.0935+.0000/-.0003)
DIA.
7.14 + .00/- .01
(.281+.000/-.002)
DIA.
17.46 ± .80
(11/16 ± 1/32)
ADJUSTMENT SLOT
.81 WIDE X .81 ± .25 DEEP
(.032) (.032 ± .010)
9.53
(3/8)
12.7
(1/2)
15.54
(.612) R
DIA.DIA.
22.23 ± .38
(.875 ± .015)
TOLERANCES: EXCEPT WHERE NOTED
.25 .13
DECIMALS: .XX ± (.010), .XXX ± (.005)
FRACTIONS: ±1/64
MM
DIMENSIONS: (IN)
.25
(.010) X 45 ° CHAMFER
BOLDFACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
Recommended Part Numbers
Part Number Resistance (Ω) Resolution
3700S-1-102L 1,000 0.43
3700S-1-202L 2,000 0.35
3700S-1-502L 5,000 0.34
3700S-1-103L 10,000 0.26
Part Number Resistance (Ω)
3701H-1-102L 1,000
3701H-1-202L 2,000
3701H-1-502L 5,000
3701H-1-103L 10,000 REV. 06/12
ROHS IDENTIFIER:
L = COMPLIANT*
