Standard Resistance Range..................................................................100 to 100K ohms ..................................................1K to 100K ohms
Total Resistance Tolerance....................................................................±3 % .......................................................................±10 %
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)
Resolution..............................................................................................See How to Order chart ........................................ Essentially infinite
Power Rating (Voltage Limited By Power Dissipation)
Dynamic .............................................................................................-40 °C to +125 °C ................................................... -40 °C to +125 °C
Static ..................................................................................................-55 °C to +125 °C ................................................... -55 °C to +125 °C
Temperature Coefficient (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.
IP Rating ................................................................................................IP 50 ....................................................................... IP 50
Clutch................................................................................................................................................................................1.0 to 4.2 N-cm (1.5 to 6.0 oz.-in.)
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.
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
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.
*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.
3549 - 10-Turn Precision Potentiometer
Product Dimensions
Single Gang, Bushing Mount
18.446
±
0.381
(.726
±
.015)
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”
R
0.762
(.030)
Dual Gang, Bushing Mount
40.259
±
0.762
(1.585
±
.030)
39.243
±
0.762
(1.545
±
.030)
34.798
±
0.762
(1.370
±
.030)
26.467
±
0.762
(1.042
±
.030)
18.796
±
0.381
(.740
±
.015)
2
1
3
ADJUSTMENT SLOT:
0.813
0.813
WIDE X
DEEP
(.032)
(.032)
SHAFT DIMENSION “A”
1.524
±
0.254
(.060
±
.010)
7.92
±
0.381
(.312
±
.015)
19.812
±
0.812
(.780
±
.032)
14.351
±
0.381
(.565
±
.015)
6.02
±
0.381
(.237
±
.015)
SHAFT DIMENSION “A”
2
1
3
2
1
3
10.287 + 0.00/-0.05
(.405 +0.00/-.002)
BUSHING TYPE “B”
20.617
±
0.787
(.812
±
.031)
30
° ±
5
°
6.86
±
0.25
(.270
±
.010)
1.52
(.060)
7.92
±
0.381
(.312
±
.015)
MOUNTING SURFACE
30
° ±
5
°
6.86
±
0.25
(.270
±
.010)
R 16.256
(.640)
MAX.
12.7
±
0.254
(.500
±
.010)
OPTIONAL ANTI-
ROTATIONAL PIN
1.499
1.016
AND
(.059)
(.040)
FROM MOUNTING
SURFACE ON
7.366
RADIUS
(.290)
22.479
±
0.812
DIA.
(.885
±
.032)
20.643
±
0.787
(.813
±
.031)
ADJ. SLOT:
0.813
WIDE X
(.032)
0.813
±
.0004
DEEP
(.032
±
.010)
R 16.256
(.640)
MAX.
DIA.
12.649
±
0.254
(.498
±
.010)
MOUNTING FACE
12.7
±
0.254
(.500
±
.010)
2
CCW
WIPER
1
CLOCKWISE
3
CW
TOLERANCES: EXCEPT WHERE NOTED
.50
.127
.0127
DECIMALS: .XX
±
(.02) .XXX
±
(.005) .XXXX
±
(.0005)
MM
DIMENSIONS:
(IN)
Bushing
Selection
Bushing Material
Shaft Material
Bushing Type "B"
Shaft Dimension "A"
Code
6.34 +0/-0.022
Brass
Nickel Plated Brass 3/8 " 32-UNEF- 2A THD.
A
(0.2497 +0/-0.0009)
6.00 +0/-0.022
Brass
Nickel Plated Brass
M9 X 0.75-8g
B
(0.2362 +0/-0.0009)
6.34 +0/-0.007
Bronze
Stainless Steel
3/8 " 32-UNEF- 2A THD.
C
(0.2497 +0/-0.0003)
6.00 +0/-0.007
Bronze
Stainless Steel
M9 X 0.75-8g
D
(0.2362 +0/-0.0003)
6.34 +0/-0.007
Bronze
Stainless Steel
3/8 " 32-UNEF- 2A THD.
G
(0.2497 +0/-0.0003)
6.00 +0/-0.007
Bronze
Stainless Steel
M9 X 0.75-8g
H
(0.2362 +0/-0.0003)
OPTIONAL ANTI-
ROTATIONAL PIN
1.016
1.499
AND
(.040)
(.059)
FROM MOUNTING
SURFACE ON
7.366
RADIUS
(.290)
22.479
±
0.812
(.885
±
.032)
DIA.
DIA.
12.649
±
0.254
(.498
±
.010)
MOUNTING FACE
CCW
1
2
2
WIPER
3
CW
CCW
1
CLOCKWISE
3
CW
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
3549 - 10-Turn Precision Potentiometer
Product Dimensions
Single Gang, Servo Mount
23.86
±
0.381
(.939
±
.015)
19.46
±
0.381
(.766
±
.015)
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)
31.88
±
0.78
(1.255
±
.031)
24.206
±
0.381
(.953
±
.015)
19.76
±
0.381
(.778
±
.015)
MOUNTING SURFACE
11.13
±
0.381
(.438
±
.015)
15.8725 + .0000/-.0127
DIA.
(.6249 +.0000/-.0005)
17.526
DIA.
(.690)
DIA.
3.1699 + .0000/-.0076
(.1248 + .0000/-.0003)
2
1
3
MOUNTING SURFACE
11.43
±
0.381
(.450
±
.015)
15.8725 + .0000/-.0127
DIA.
(.6249 +.0000/-.0005)
17.526
DIA.
(.690)
DIA.
3.1699 + .0000/-.0076
(.1248 + .0000/-.0003)
2
1
3
2
1
3
1.575
(.062)
1.575
(.062)
1.575
(.062)
25.222
±
0.787
(.993
±
.031)
9.525
±
0.787
(.375
±
.031)
1.575
(.062)
1.575
(.062)
1.575
(.062)
30
° ±
5
°
6.858
±
0.254
(.270
±
.010)
R 16.256
(.640)
MAX.
12.7
±
0.254
(.500
±
.010)
R 16.256
(.640)
MAX.
30
° ±
5
°
6.858
±
0.254
(.270
±
.010)
9.525
±
0.787
(.375
±
.031)
12.7
±
0.254
(.500
±
.010)
22.225
±
0.381
(.875
±
.015)
DIA.
2
CCW
WIPER
1
CLOCKWISE
3
CW
22.225
±
0.381
(.875
±
.015)
DIA.
TOLERANCES: EXCEPT WHERE NOTED
.50
.127
.0127
DECIMALS: .XX
±
(.02) .XXX
±
(.005) .XXXX
±
(.0005)
MM
DIMENSIONS:
(IN)
CCW
1
2
2
WIPER
3
CW
CCW
1
CLOCKWISE
3
CW
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
3549 - 10-Turn Precision Potentiometer
Panel Thickness Dimensions
(For Bushing Mount Only)
2.46 - 3.81
(.097 - .150)
How To Order
3
5 4 9 S
-
2 A A -
1
0 3
/
1
0 3 A
PANEL
HEX NUT
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.
INDEPENDENT LINEARITY
Code Description
A
0.20 %
B
0.10 %
LOCKWASHER
POT
10.44 ± .07
DIA.
(.411 ± .003)
R
7.42
(.292)
ADDITIONAL HOLE FOR
ANTI-ROTATION PIN
1.60 +.08/-.03
DIA.
(.063 +.003/-.001)
RESISTANCE**
Code
Element Type
102 (1K ohms)
Hybritron®
202 (2K ohms)
Hybritron®
502 (5K ohms)
Hybritron®
103 (10K ohms) Hybritron®
203 (20K ohms) Hybritron®
503 (50K ohms) Hybritron®
104 (100K ohms) Hybritron®
101 (100 ohms) Wirewound
201 (200 ohms) Wirewound
501 (500 ohms) Wirewound
102 (1K ohms)
Wirewound
202 (2K ohms)
Wirewound
502 (5K ohms)
Wirewound
103 (10K ohms) Wirewound
203 (20K ohms) Wirewound
503 (50K ohms) Wirewound
104 (100K ohms) Wirewound
Resolution
—
—
—
—
—
—
—
0.055
0.042
0.031
0.027
0.021
0.021
0.019
0.014
0.011
0.008
** For Single gang, use only first three digits.
For Dual gang, use six digits separated by a "/".
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.
Panel thickness and hole diameters are
recommended for best fit. However, customers
may adjust the dimensions to suit their specific
application.
DIMENSIONS:
MM
(INCHES)
TOLERANCES: ±
0.127
(.005)
BUSHING MOUNT
Code
A
B
C
D
G
H
Shaft FMS
13/16 "
20.6 mm
13/16 "
20.6 mm
13/16 "
20.6 mm
Shaft Dia.
1/4 "
6 mm
1/4 "
6 mm
1/4 "
6 mm
Shaft Material
Nickel Plated Brass
Nickel Plated Brass
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Bushing Dia.
3/8 "
9 mm
3/8 "
9 mm
3/8 "
9 mm
Bushing Material
Brass
Brass
Bronze
Bronze
Bronze
Bronze
Slip Clutch
N/A
N/A
N/A
N/A
Yes***
Yes***
SERVO MOUNT
Code
E
Shaft FMS
3/8 "
Shaft Dia.
1/8 "
Shaft Material
Stainless Steel
*** Not available in dual gang version.
REV. 10/11
“Hybritron” is a registered trademark of Bourns, Inc.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
