PL
IA
NT
Features
CO
M
■ Servo mount
*R
oH
S
■ Excellent resolution
■ Non-standard features and specifications
available
■ Small diameter
■ High rotational life
■ RoHS compliant*
3750/3751 - Precision Potentiometer
Electrical Characteristics1
3750 Wirewound Element
3751 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 °, -4 °
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 0.15 %
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 infinite
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 Coefficient 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 .....10,000,000 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
Product Dimensions
3750/3751
28.40 ± .38
(1.118 ± .015)
3.18 + .25/ - .13
(.125 + .010/– .005)
1.57 + .25/ - .13
(.062 + .010/ - .005)
1.57 + .25/ - .03
(.062 + .010/- .005)
9.53 + .00/ - .03
(.375 + .010/- .005)
12.70 + .30/- .20
(.500 + .010/- .007)
10.16
DIA. MAX.
(.400)
30.16
MAX.
(1-3/16)
9.53 ± .80
(3/8 ± 1/32)
5.08 + .25/ - .12
(.20 + .010/- .005)
3.18 ± .40
(1/8 ± 1/64)
10.71
(27/64)
2.375 + .000/- .008
(.0935 + .000/- .0003)
12.7 ± .40
(1/2 ± 1/64)
Characteristics1
Stop Strength.......................................................................................... 14 N-cm (20 oz-in.) minimum
Mechanical Angle ......................................................................................................3600 ° +20 °, -0 °
Torque
Starting .................................................................................................0.35 N-cm (0.5 oz.-in.) max.
Running ................................................................................................0.21 N-cm (0.3 oz.-in.) max.
Shaft Runout.................................................................................................0.08 mm (0.003 in.) T.I.R.
Lateral Runout ..............................................................................................0.08 mm (0.003 in.) T.I.R.
Shaft End Play ..............................................................................................0.13 mm (0.005 in.) T.I.R.
Shaft Radial Play ..........................................................................................0.05 mm (0.002 in.) T.I.R.
Pilot Diameter Runout ..................................................................................0.05 mm (0.002 in.) T.I.R.
Backlash ....................................................................................................................... 1.0 ° maximum
Weight ..................................................................................................................Approximately 8.5 G
Terminals ...........................................................................................................Gold-plated turret lugs
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 ................................................. Manufacturerʼs name and part number, resistance value and
tolerance, linearity tolerance, wiring diagram, and date code
Ganging (Multiple Section Pots.) ................................................................................. 1 cup maximum
TOLERANCES: EXCEPT WHERE NOTED
.25
.13
DECIMALS: .XX (.010) .XXX (.005)
MM
DIMENSIONS:
(IN)
FRACTIONS: 1/64
2
CCW
WIPER
3
1
CW
CLOCKWISE
1At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.
2Consult manufacturer for complete specification details.
Recommended Part Numbers
Part Number
Resistance (Ω)
3750S-1-102L
3750S-1-202L
3750S-1-502L
3750S-1-103L
1,000
2,000
5,000
10,000
Resolution
0.05
0.04
0.04
0.02
BOLDFACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
Part Number
Resistance (Ω)
3751H-1-102L
3751H-1-202L
3751H-1-502L
3751H-1-103L
1,000
2,000
5,000
10,000
ROHS IDENTIFIER:
L = COMPLIANT*
REV. 10/19
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
“Hybritron” is a registered trademark of Bourns, Inc.
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific
applications. The products described herein and this document
are subject to specific legal disclaimers as set forth on the
last page of this document, and at
www.bourns.com/docs/legal/disclaimer.pdf
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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