Features
■ Servo mount
■ Excellent resolution
■ Non-standard features and specifications
available
■ Small diameter
■ High rotational life
■ RoHS compliant*
3750/3751 - Precision Potentiometer
®
1
Product Dimensions
Electrical Characteristics
3750 Wirewound Element 3751 Hybritron Element
Standard Resistance Range................100 to 100 K ohms.....................1 K to 100 K ohms
Total Resistance Tolerance..................±± ꢀ...........................................±10 ꢀ
Independent Linearity..........................±0.ꢁ± ꢀ......................................±0.ꢁ± ꢀ
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.ꢁ ꢀ maximum
Noise ..................................................±00 ohms ENR maximum..........Output smoothness 0.1± ꢀ
maximum
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)
Dielectric Withstanding Voltage (MIL-STD-ꢁ0ꢁ, Method 301)
9.53 + .00/ - .03
(.375 + .010/- .005)
Sea Level.........................................1,000 VAC minimum ..................1,000 VAC minimum
Power Rating (Voltage Limited By Power Dissipation or 31± VAC, Whichever Is Less)
+70 °C..............................................1 watt..........................................1 watt
+1ꢁ± °C............................................0 watt..........................................0 watt
Insulation Resistance (±00 VDC) ........1,000 megohms minimum..........1,000 megohms minimum
Resolution............................................See recommended part nos. .....Essentially infinite
12.70 + .30/- .20
(.500 + .010/- .007)
10.16
DIA. MAX.
(.400)
30.16
1
9.53 .80
(3/8 1/32)
Environmental Characteristics
MAX.
(1-3/16)
Operating Temperature Range............+1 °C to +1ꢁ± °C........................+1 °C to +10± °C
Storage Temperature Range ...............-6± °C to +1ꢁ± °C.......................-±± °C to +10± °C
Temperature Coefficient Over
ꢁ
Storage Temperature Range .........±±0 ppm/°C maximum/unit.........±100 ppm/°C maximum/unit
5.08 + .25/ - .12
(.20 + .010/- .005)
Vibration ..............................................ꢁ0 G ...........................................ꢁ0 G
Wiper Bounce..................................0.1 millisecond maximum...........0.1 millisecond maximum
Shock...................................................100 G .........................................100 G
3.18 .40
(1/8 1/64)
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......................±ꢁ ꢀ maximum ..........................±± ꢀ maximum
ꢁ
ꢁ
Rotational Life (No Load).....................1,000,000 shaft revolutions .....10,000,000 shaft revolutions
Total Resistance Shift......................±± ꢀ maximum ..........................±± ꢀ maximum
Moisture Resistance (MIL-STD-ꢁ0ꢁ, Method 103, Condition B)
10.71
(27/64)
2.375 + .000/- .008
(.0935 + .000/- .0003)
Total Resistance Shift......................±ꢁ ꢀ maximum ..........................±± ꢀ maximum
IP Rating..............................................IP 40...........................................IP 40
12.7 .40
(1/2 1/64)
1
Mechanical Characteristics
Stop Strength..........................................................................................14 N-cm (ꢁ0 oz-in.) minimum
Mechanical Angle ......................................................................................................3600 ° +ꢁ0 °, -0 °
Torque
TOLERANCES: EXCEPT WHERE NOTED
Starting .................................................................................................0.3± N-cm (0.± oz.-in.) max.
Running ................................................................................................0.ꢁ1 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 (0.00± in.) T.I.R.
Shaft Radial Play..........................................................................................0.0± mm (0.00ꢁ in.) T.I.R.
Pilot Diameter Runout ..................................................................................0.0± mm (0.00ꢁ in.) T.I.R.
Backlash....................................................................................................................... 1.0 ° maximum
Weight ..................................................................................................................Approximately 8.± G
Terminals...........................................................................................................Gold-plated turret lugs
Soldering Condition
.25
(.010)
.13
(.005)
DECIMALS: .XX
.XXX
MM
(IN)
DIMENSIONS:
FRACTIONS: 1/64
WIPER
2
CW
CCW
3
1
Manual Soldering.................................96.±Sn/3.0Ag/0.±Cu solid wire or no-clean rosin cored wire
370 °C (700 °F) max. for 3 seconds
CLOCKWISE
Wave Soldering ........................................................ 96.±Sn/3.0Ag/0.±Cu solder with no-clean flux
ꢁ60 °C (±00 °F) max. for ± 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: +ꢁ± °C nominal and ±0 ꢀ relative humidity nominal, except as noted.
Consult manufacturer for complete specification details.
Recommended Part Numbers
Part Number Resistance (Ω) Resolution
Part Number
3751H-1-102L
3751H-1-202L
3751H-1-502L
3751H-1-103L
Resistance (Ω)
1,000
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
2,000
5,000
10,000
REV. 06/1ꢁ
“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
ROHS IDENTIFIER:
L = COMPLIANT*
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
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