Page 1
Features
®
elements
■ Designed for HMI and MMI applications
■ Dual gang option
■ Servo mount option
■ Dual ball bearing option
*RoHS COMPLIANT
■ Wirewound and Hybritron
■ High rotational life
■ Optional 0.1 % linearity
■ Optional A/R lug
■ RoHS compliant*
■ Suitable for use under some side load
conditions
3549 - 10-Turn Precision Potentiometer
Electrical Characteristics1 Wirewound Element Hybritron® Element
Standard Resistance Range..................................................................100 to 100K ohms ..................................................1K to 100K ohms
Total Resistance Tolerance ....................................................................±3 % .......................................................................±10 %
Independent Linearity ............................................................................±0.2 % ....................................................................±0.2 %
Independent Linearity (Maximum Practical) ..........................................±0.1 % ....................................................................±0.1 %
Effective Electrical Angle .......................................................................3600 ° +10 °, -0 ° ....................................................3600 ° +10 °, -0 °
Absolute Minimum Resistance/End Voltage ..........................................1 ohm or 0.1 % maximum ......................................0.2 % maximum
(whichever is greater)
Noise/Output Smoothness ....................................................................100 ohms maximum ...............................................0.10 % maximum
Max. Wiper Current @ 5K ohms ...........................................................20 mA .....................................................................10 mA
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Sea Level ........................................................................................... 1,000 VAC minimum ..............................................1,000 VAC minimum
Insulation Resistance (500 VDC) ..........................................................1,000 megohms minimum ......................................1,000 megohms minimum
Resolution..............................................................................................See How to Order chart ........................................ Essentially infi nite
Power Rating (Voltage Limited By Power Dissipation)
+70 °C ................................................................................................2 watts .................................................................... 2 watts
+125 °C ..............................................................................................0 watt ...................................................................... 0 watt
Environmental Characteristics
Operating Temperature Range
Dynamic ............................................................................................. -40 °C to +125 °C ...................................................-40 °C to +125 °C
Static .................................................................................................. -55 °C to +125 °C ...................................................-55 °C to +125 °C
Temperature Coeffi cient (Over Static Temperature Range) ..................±50 ppm/°C ............................................................±100 ppm/°C
Temperature Cycling (5 Cycles Over Static Temperature Range) ......... ±2 % TR shift max. .................................................±4 % TR shift max.
Vibration (15 Gs, 10 Hz to 2 kHz)
Wiper Bounce ....................................................................................0.1 ms max. ............................................................0.1 ms max.
Shock (100 Gs, 6 ms sawtooth)
Wiper Bounce ....................................................................................0.1 ms max. ............................................................0.1 ms max.
Load Life (1,000 hours @ 70 °C) ........................................................... ±2 % TR shift .......................................................... ±5 % TR shift max.
Rotational Life
No Load or Powered .......................................................................... 2,000,000 shaft revolutions .................................... 5,000,000 shaft revolutions
No Load or Powered (Dual Ball Bearing) ..........................................N/A .........................................................................10,000,000 shaft revolutions
Moisture Resistance (Mil-Std-202, Method 103) ...................................±2 % TR shift max. ................................................. ±5 % TR shift max.
IP Rating ................................................................................................ IP 50 .......................................................................IP 50
Mechanical Characteristics
Mechanical Angle ...........................................................................................................................................................................................3600 ° +10 °, -0 °
Backlash .................................................................................................................................................................................................................... 1.0 ° max.
Stop Strength.......................................................................................................................................................................................53 N-cm (75 oz-in.) min.
Torque
Starting ........................................................................................................................................................................................0.5 N-cm (0.7 oz.-in.) max.
Running .......................................................................................................................................................................................0.5 N-cm (0.7 oz.-in.) max.
Clutch................................................................................................................................................................................1.0 to 4.2 N-cm (1.5 to 6.0 oz.-in.)
Mounting .......................................................................................................................................................................... 170-200 N-cm (15-18 in.-lb.) max.
Shaft Runout T.I.R. ..................................................................................................................................................................................... 0.08 mm (0.003 in.)
Lateral Runout T.I.R. ................................................................................................................................................................................... 0.13 mm (0.005 in.)
Shaft End Play T.I.R. ..................................................................................................................................................................................0.15 mm (0.006 in.)
Shaft Radial Play T.I.R. ............................................................................................................................................................................... 0.08 mm (0.003 in.)
Pilot Diameter Runout T.I.R. .......................................................................................................................................................................0.08 mm (0.003 in.)
Weight
Single ...................................................................................................................................................................................................... 20 gm (0.7 oz.) typ.
Dual ....................................................................................................................................................................................................... 36 gm (1.27 oz) typ.
Shaft Side Load (Max. Allowable)
Nickel Plated Brass Shaft w/Brass Bushing .................................................................................................................................................50 gmf (1.7 ozf)
Stainless Steel Shaft w/Bronze Bushing .................................................................................................................................................... 250 gmf (8.8 ozf)
Terminals .............................................................................................................................................................................................. Gold-plated solder 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 fl ux, 260 °C (500 °F) max. for 5 seconds
Wash processes .......................................................................................................................................................................................Not recommended
Mounting Hardware ............................................................................................. One lockwasher and one mounting nut is shipped with each potentiometer
Recommended Panel Thickness (Bushing Mount) ..................................................................................................................2.46-3.81 mm (0.097-0.150 in.)
Marking ...........................................................................................................................Manufacturer’s symbol, model number, product code and date code
Standard Packaging ...........................................................................................................................................................................Plastic trays (5 pcs./tray)
1
At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.
For other options, please consult factory.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
1
1
*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.
Users should verify actual device performance in their specifi c applications.
Page 2
3549 - 10-Turn Precision Potentiometer
Product Dimensions
Single Gang, Bushing Mount Dual Gang, Bushing Mount
18.446 ± 0.381
(.726 ± .015)
2 1 3
1.524 ± 0.254
(.060 ± .010)
7.92 ± 0.381
(.312 ± .015)
19.812 ± 0.812
(.780 ± .032)
OPTIONAL
ANTIROTATIONAL
PIN
1.016
(.040)
Bushing
Selection
Shaft Dimension "A"
Code
6.34 +0/-0.022
A
(0.2497 +0/-0.0009)
6.00 +0/-0.022
B
(0.2362 +0/-0.0009)
6.34 +0/-0.007
C
(0.2497 +0/-0.0003)
6.00 +0/-0.007
D
(0.2362 +0/-0.0003)
6.34 +0/-0.007
G
(0.2497 +0/-0.0003)
6.00 +0/-0.007
H
(0.2362 +0/-0.0003)
MOUNTING SURFACE
14.046 ± 0.381
(.553 ± .015)
5.715 ± 0.381
(.225 ± .015)
10.287 + 0.00/-0.05
(.405 +0.00/-.002)
BUSHING TYPE “B”
20.617 ± 0.787
(.812 ± .031)
30 ° ± 5 °
16.256
R
(.640)
MAX.
1.524 +.000/-0.127
(.060 +.000/-.005)
DIA.
OPTIONAL
ANTI-ROTATIONAL
CCW
TOLERANCES: EXCEPT WHERE NOTED
DECIMALS: .XX ± .XXX ± .XXXX ±
DIMENSIONS:
1
CLOCKWISE
MM
(IN)
Shaft Material
Nickel Plated Brass
Nickel Plated Brass
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
PIN
.50
(.02)
2
22.479 ± 0.812
WIPER
(.885 ± .032)
CW
3
.127
(.005)
Bushing Type "B"
3/8 " 32-UNEF- 2A THD.
M9 X 0.75-8g
3/8 " 32-UNEF- 2A THD.
M9 X 0.75-8g
3/8 " 32-UNEF- 2A THD.
M9 X 0.75-8g
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
0.762
R
(.030)
ADJUSTMENT SLOT:
0.813
(.032)
SHAFT DIMENSION “A”
DIA.
.0127
(.0005)
WIDE X
6.86 ± 0.25
(.270 ± .010)
12.7 ± 0.254
(.500 ± .010)
12.649 ± 0.254
MOUNTING FACE
Bushing Material
0.813
(.032)
(.498 ± .010)
Bronze
Bronze
Bronze
Bronze
DEEP
DIA.
Brass
Brass
40.259 ± 0.762
(1.585 ± .030)
34.798 ± 0.762
(1.370 ± .030)
22 11 33
MOUNTING SURFACE
OPTIONAL
ANTIROTATIONAL
PIN
1.016
(.040)
1.524 +.000/-0.127
(.060 +.000/-.005)
16.256
R
(.640)
MAX.
DIA.
OPTIONAL
ANTI-ROTATIONAL
CCW
1
CCW
1
Users should verify actual device performance in their specifi c applications.
39.243 ± 0.762
(1.545 ± .030)
26.467 ± 0.762
18.796 ± 0.381
(.740 ± .015)
1.52
(.060)
ADJ. SLOT:
PIN
2 2
CLOCKWISE
(1.042 ± .030)
14.351 ± 0.381
(.565 ± .015)
6.02 ± 0.381
(.237 ± .015)
10.287 + 0.00/-0.05
20.643 ± 0.787
0.813
WIDE X
(.032)
30 ° ± 5 °
22.479 ± 0.812
(.885 ± .032)
WIPER
(.405 +0.00/-.002)
BUSHING TYPE “B”
7.92 ± 0.381
(.312 ± .015)
(.813 ± .031)
0.813 ± .0004
(.032 ± .010)
6.86 ± 0.25
(.270 ± .010)
12.7 ± 0.254
(.500 ± .010)
DIA.
CW
3
CW
3
SHAFT
DIMENSION
“A”
DEEP
12.649 ± 0.254
(.498 ± .010)
MOUNTING FACE
Specifi cations are subject to change without notice.
DIA.
Page 3
3549 - 10-Turn Precision Potentiometer
Product Dimensions
Single Gang, Servo Mount Single Gang, Servo Mount, Dual Ball Bearing
23.86 ± 0.381
(.939 ± .015)
2 1 3
25.222 ± 0.787
(.993 ± .031)
16.256
R
(.640)
MAX.
19.46 ± 0.381
(.766 ± .015)
1.575
(.062)
1.575
(.062)
1.575
(.062)
MOUNTING SURFACE
11.13 ± 0.381
(.438 ± .015)
15.8725 + .0000/-.0127
(.6249 +.0000/-.0005)
17.526
DIA.
(.690)
3.1699 + .0000/-.0076
(.1248 + .0000/-.0003)
9.525 ± 0.787
(.375 ± .031)
30 ° ± 5 °
6.858 ± 0.254
(.270 ± .010)
12.7 ± 0.254
(.500 ± .010)
DIA.
DIA.
9.779 ± 0.381
(.385 ± .015)
R
16.256
(.640)
MAX.
2 1 3
28.778 ± 0.787
(1.133 ± .031)
23.86 ± 0.381
(.939 ± .015)
19.46 ± 0.381
(.766 ± .015)
1.575
(.062)
1.575
(.062)
26.111 ± 0.787
(1.028 ± .031)
1.575
(.062)
30 ° ± 5 °
MOUNTING SURFACE
11.13 ± 0.381
(.438 ± .015)
6.858 ± 0.254
(.270 ± .010)
15.8725 + .0000/-.0127
(.6249 +.0000/-.0005)
17.526
DIA.
(.690)
3.1699 + .0000/-.0076
(.1248 + .0000/-.0003)
9.525 ± 0.787
(.375 ± .031)
DIA.
DIA.
22.225 ± 0.381
(.875 ± .015)
DIA.
WIPER
2
.127
(.005)
CW
3
(.0005)
CCW
1
CLOCKWISE
TOLERANCES: EXCEPT WHERE NOTED
DECIMALS: .XX ± .XXX ± .XXXX ±
DIMENSIONS:
MM
(IN)
.50
(.02)
.0127
CCW
22.225 ± 0.381
1
(.875 ± .015)
DIA.
CLOCKWISE
WIPER
2
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
12.7 ± 0.254
(.500 ± .010)
CW
3
Page 4
3549 - 10-Turn Precision Potentiometer
Product Dimensions
Dual Gang, Servo Mount
45.67 ± 0.78
(1.798 ± .031)
44.65 ± 0.78
(1.758 ± .031)
40.21 ± 0.78
(1.583 ± .031)
22 11 33
16.256
R
(.640)
MAX.
31.88 ± 0.78
(1.255 ± .031)
24.206 ± 0.381
(.953 ± .015)
19.76 ± 0.381
(.778 ± .015)
1.575
(.062)
1.575
(.062)
30 ° ± 5 °
1.575
(.062)
MOUNTING SURFACE
11.43 ± 0.381
(.450 ± .015)
15.8725 + .0000/-.0127
6.858 ± 0.254
(.270 ± .010)
12.7 ± 0.254
(.500 ± .010)
(.6249 +.0000/-.0005)
17.526
DIA.
(.690)
DIA.
3.1699 + .0000/-.0076
(.1248 + .0000/-.0003)
9.525 ± 0.787
(.375 ± .031)
DIA.
Panel Thickness Dimensions
(For Bushing Mount Only)
HEX NUT
LOCKWASHER
10.44 ± .07
(.411 ± .003)
DIA.
Anti-rotation pin hole is shown at six o'clock
position for reference only. The actual location is
determined by the customer's application. Refer
to the front view of the potentiometer to see the
location of the optional A/R pin.
2.46 - 3.81
(.097 - .150)
PANEL
POT
7.42
R
(.292)
ADDITIONAL HOLE FOR
ANTI-ROTATION PIN
1.60 +.08/-.03
DIA.
(.063 +.003/-.001)
CCW
CCW
Panel thickness and hole diameters are
recommended for best fit. However, customers
may adjust the dimensions to suit their specific
application.
1
1
22.225 ± 0.381
(.875 ± .015)
2 2
CLOCKWISE
DIA.
WIPER
DIMENSIONS:
CW
3
CW
3
MM
(INCHES)
TOLERANCES: ±
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
0.127
(.005)
Page 5
3549 - 10-Turn Precision Potentiometer
How To Order
3549S- 2AA-103/ 103A
MODEL DESIGNATOR
Code
Description
3549
10-Turn
ELEMENT TYPE
Code
Description
H
Hybritron®
S
Wirewound
NO. OF SECTIONS
Code
Description
1
Single
2
Dual
ANTI-ROTATION LUG
Code
Description
A
None
B
180 °
* Anti-rotation lug is not available for
servo mount versions.
Code
Shaft FMS
A
13/16 "
B
20.6 mm
C
13/16 "
D
20.6 mm
G
13/16 "
H
20.6 mm
Code
Shaft FMS
E
3/8 "
F
3/8 "
*** Not available in dual gang version.
**** Available in Hybritron
Shaft Dia.
1/4 "
6 mm
1/4 "
6 mm
1/4 "
6 mm
Shaft Dia.
1/8 "
1/8 "
®
version only and limited to single section.
BUSHING MOUNT
Shaft Material
Nickel Plated Brass
Nickel Plated Brass
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
SERVO MOUNT
Shaft Material
Stainless Steel
Stainless Steel
INDEPENDENT LINEARITY
Code
Description
A
0.20 %
B
0.10 %
Code
102 (1K ohms)
202 (2K ohms)
502 (5K ohms)
103 (10K ohms)
203 (20K ohms)
503 (50K ohms)
104 (100K ohms)
101 (100 ohms)
201 (200 ohms)
501 (500 ohms)
102 (1K ohms)
202 (2K ohms)
502 (5K ohms)
103 (10K ohms)
203 (20K ohms)
503 (50K ohms)
104 (100K ohms)
** For Single gang, use only first three digits.
For Dual gang, use six digits separated by a "/".
Bushing Dia.
RESISTANCE**
3/8 "
9 mm
3/8 "
9 mm
3/8 "
9 mm
Ball Bearings
N/A
Front & Rear****
Element Type
Hybritron®
Hybritron®
Hybritron®
Hybritron®
Hybritron®
Hybritron®
Hybritron®
Wirewound
Wirewound
Wirewound
Wirewound
Wirewound
Wirewound
Wirewound
Wirewound
Wirewound
Wirewound
Bushing Material
Brass
Brass
Bronze
Bronze
Bronze
Bronze
Resolution (%)
—
—
—
—
—
—
—
0.055
0.042
0.031
0.027
0.021
0.016
0.019
0.014
0.011
0.008
Slip Clutch
N/A
N/A
N/A
N/A
Yes***
Yes***
REV. 10/14
“Hybritron” is a registered trademark of Bourns, Inc.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
Specifi cations are subject to change without notice.
Loading...