PL
IA
NT
Features
■
Servo mount
■
Excellent resolution
■
Non-standard features and specifications
*R
oH
S
CO
M
available
■
Small diameter
■
High rotational life
■
RoHS compliant*
3750/3751 - Precision Potentiometer
Electrical Characteristics
1
3750 Wirewound Element
3751 Hybritron
®
Element
Product Dimensions
3750/3751
28.40 .38
(1.118 .015)
1.57 + .25/ - .13
(.062 + .010/ - .005)
3.18 + .25/ - .13
(.125 + .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)
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 Characteristics
1
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 Range
2
......... ±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 revolutions
2
.....10,000,000 shaft revolutions
2
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
9.53 .80
(3/8 1/32)
5.08 + .25/ - .12
(.20 + .010/- .005)
3.18 .40
(1/8 1/64)
2.375 + .000/- .008
(.0935 + .000/- .0003)
10.71
(27/64)
12.7 .40
(1/2 1/64)
Mechanical Characteristics
1
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 ................................................. Manufacturer’s name and part number, resistance value and
tolerance, linearity tolerance, wiring diagram, and date code
Ganging (Multiple Section Pots.) ................................................................................. 1 cup maximum
1
At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.
2
Consult manufacturer for complete specification details.
TOLERANCES: EXCEPT WHERE NOTED
.25
.13
DECIMALS: .XX (.010) .XXX (.005)
MM
DIMENSIONS:
(IN)
FRACTIONS: 1/64
2
CCW
WIPER
1
CLOCKWISE
3
CW
Recommended Part Numbers
Part Number
Resistance (Ω)
Resolution
Part Number
Resistance (Ω)
3750S-1-102L
3750S-1-202L
3750S-1-502L
3750S-1-103L
1,000
2,000
5,000
10,000
0.05
0.04
0.04
0.02
3751H-1-102L
3751H-1-202L
3751H-1-502L
3751H-1-103L
ROHS IDENTIFIER:
L = COMPLIANT*
1,000
2,000
5,000
10,000
REV. 06/12
“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.
Specifications are subject to change without notice.
Customers should verify actual device performance in
their specific applications.
BOLDFACE
LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
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