3540/3541 - Precision Potentiometer
Features
Bushing mount
Optional center tap and rear
shaft extension
Optional AR lug feature
Gangable with common or concentric
shafts
High torque available
Optional 0.1 % linearity
Non-standard features and specifications
available
Electrical Characteristics
1
3540 Wirewound Element 3541 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 , -0
Absolute Minimum Resistance/..........1 ohm or 0.1 % maximum........0.2 % maximum
Minimum Voltage
(whichever is greater)
Noise/Output Smoothness ................100 ohms ENR maximum ........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 447 VAC, Whichever Is Less)
+70 C ............................................2 watts ......................................2 watts
+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 +125 C
Storage Temperature Range ..............-55 C to +125 C ....................-55 C to +125 C
Temperature Coefficient Over
Storage Temperature Range
2
........50 ppm/C maximum/unit ......100 ppm/C maximum/unit
Vibration..............................................15 G ..........................................15 G
Wiper Bounce ................................0.1 millisecond maximum ........0.1 millisecond maximum
Shock..................................................50 G ..........................................50 G
Wiper Bounce ................................0.1 millisecond maximum ........0.1 millisecond maximum
Load Life ............................................1,000 hours, 2 watts ................1,000 hours, 2 watts
Total Resistance Shift ....................2 % ........................................5 %
Rotational Life (No Load) ....................1,000,000 shaft revolutions
2
....5,000,000 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
Mechanical Characteristics
1
Stop Strength ...............................................................................................53 N-cm (75 oz-in.) minimum
Mechanical Angle ......................................................................................................3600 +10 , -0
Torque (Starting & Running)......................................................................0.35 N-cm (0.5 oz.-in.) max.
Mounting.....................................................................................170-200 N-cm (15-18 lb.-in.) max.
Shaft Runout..................................................................................................0.08 mm (0.003 in.) T.I.R.
Lateral Runout ...............................................................................................0.13 mm (0.005 in.) T.I.R.
Shaft End Play ...............................................................................................0.30 mm (0.012 in.) T.I.R.
Shaft Radial Play ...........................................................................................0.08 mm (0.003 in.) T.I.R.
Pilot Diameter Runout ...................................................................................0.08 mm (0.003 in.) T.I.R.
Backlash ........................................................................................................................1.0 maximum
Weight..................................................................................................................Approximately 21 gm
Terminals ..........................................................................................................Gold-plated solder lugs
Soldering Condition....................Recommended hand soldering using Sn95/Ag5 no clean solder,
0.025 " wire diameter. Maximum temperature 399 C (750 F) for 3 seconds.
No wash process to be used with no clean flux.
Marking .................................................Manufacturer's name and part number, resistance value and
tolerance, linearity tolerance, wiring diagram, and date code
Ganging (Multiple Section Pots.) ...............................................................................2 cups maximum
Hardware ....................................................One lockwasher (H-37-2) and one mounting nut (H-38-2)
is shipped with each potentiometer.
1
At room ambient: +25 C nominal and 50 % relative humidity nominal, except as noted.
2
Consult manufacturer for complete specification details.
Recommended Part Numbers
Part Number
Resistance
Resolution
3540S-1-201L
200
.042
3540S-1-501L
500
.031
3540S-1-102L
1,000
.027
3540S-1-202L
2,000
.021
3540S-1-502L
5,000
.021
3540S-1-103L
10,000
.019
3540S-1-203L
20,000
.014
3540S-1-503L
50,000
.011
3540S-1-104L
100,000
.008
Part Number
Resistance
3541H-1-102L
1,000
3541H-1-202L
2,000
3541H-1-502L
5,000
3541H-1-103L
10,000
3541H-1-203L
20,000
3541H-1-503L
50,000
3541H-1-104L
100,000
3540S-1/3541H-1
1
5.72 .38
(.225.015)
10.32 +.00/.05
(.406+.000/-.002)
3/8 " 32-UNEF-2ATHD
ADJUSTMENT
SLOT
.81
WIDE
X
.81.25
DEEP
2
3
1.52
(.06)
7.92 .38
(.312 .015)
19.05 .38
(.750 .015)
30
5
6.35
(.25)
22.23 .38
(.875 .015)
MTG. FACE
12.45
(.49)
OPTIONAL ANTIROTATION LUG
(-91) 1.42 X .50 ON 7.4 RADIUS.
LENGTH 1.27 FROM MOUNTING SURFACE.
(SUGGESTED PANEL HOLE 1.6 DIA.)
1
3
CW
CLOCKWISE
CCW
2
WIPER
18.3
(.72)
14.35 .38
(.565.015)
DIA.
(.032)
(.032.010)
6.342 + .000/ - .023
(.2497+.0000/-.0009)
DIA.
20.62 .79
(.812 .031)
15.88
(.625)
DIA. MIN.
15.88
(.625)
TOLERANCES: EXCEPT WHERE NOTED
.25 .13
DECIMALS: .XX
(.010),
.XXX
(.005)
FRACTIONS: 1/64
MM
DIMENSIONS:
(IN.)
.25
(.010)
X 45 CHAMFER
R MAX.
BOLDFACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR SERVO MOUNT VERSION AND OTHER OPTIONS
CONSULT FACTORY.
FOR OTHER OPTIONS CONSULT FACTORY.
TERMINALS:
L = RoHS COMPLIANT
BLANK = STANDARD
REV. 06/06
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Models 3540 and 3541 are currently
available, although not recommended
for new designs.
Model 3549
is
preferred.
*RoHS COMPLIANT
VERSIONS
AVAILABLE
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