Standard Resistance Range..................................................................500 to 50K ohms ....................................................1K to 10K ohms
Total Resistance Tolerance....................................................................±3 % .......................................................................±10 %
Absolute Minimum Resistance/End Voltage ..........................................1 ohm or 0.1 % maximum ......................................0.4 % maximum
(whichever is greater)
Noise/Output Smoothness ....................................................................100 ohms maximum ...............................................0.15 % 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.
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 .................................................................................................................................................................................................... 19 gm (0.67 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 and RoHS Recast 2011/65/EU June 8, 2011.
Specifications 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 specific applications.
3548 - 5-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”
0.762
R
(.030)
Dual Gang, Bushing Mount
40.259
±
0.762
(1.585
±
.030)
34.798
±
0.762
(1.370
±
.030)
18.796
±
0.381
(.740
±
.015)
39.243
±
0.762
(1.545
±
.030)
26.467
±
0.762
(1.042
±
.030)
14.351
±
0.381
(.565
±
.015)
6.02
±
0.381
(.237
±
.015)
2
1
3
2
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)
OPTIONAL
ANTI-
ROTATIONAL
PIN
1
3
2
1
3
SHAFT
DIMENSION
“A”
10.287 + 0.00/-0.05
(.405 +0.00/-.002)
BUSHING TYPE “B”
20.617
±
0.787
(.812
±
.031)
30
° ±
5
°
R 16.256
(.640)
MAX.
6.86
±
0.25
(.270
±
.010)
7.92
±
0.381
(.312
±
.015)
MOUNTING SURFACE
20.643
±
0.787
(.813
±
.031)
0.813
±
.0004
0.813
WIDE X
ADJ. SLOT:
DEEP
(.032
±
.010)
(.032)
30
° ±
5
°
OPTIONAL
ANTI-
ROTATIONAL
PIN
1.52
(.060)
12.7
±
0.254
(.500
±
.010)
1.524 +.000/-0.127
(.060 +.000/-.005)
DIA.
1.016
(.040)
OPTIONAL
ANTI-ROTATIONAL
PIN
R 16.256
(.640)
MAX.
6.86
±
0.25
(.270
±
.010)
22.479
±
0.812
DIA.
(.885
±
.032)
DIA.
12.649
±
0.254
(.498
±
.010)
MOUNTING FACE
12.7
±
0.254
(.500
±
.010)
2
CCW
WIPER
1.524 +.000/-0.127
(.060 +.000/-.005)
DIA.
1.016
(.040)
OPTIONAL
ANTI-ROTATIONAL
PIN
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)
22.479
±
0.812
DIA.
(.885
±
.032)
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.
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 specific applications.
3548 - 5-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.
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 specific applications.
3548 - 5-Turn Precision Potentiometer
Panel Thickness Dimensions
(For Bushing Mount Only)
2.46 - 3.81
(.097 - .150)
How To Order
3
5 4 8 S
-
2 A A -
1
0 3
/
1
0 3 A
PANEL
HEX NUT
MODEL DESIGNATOR
Code Description
3548 5-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
°
INDEPENDENT LINEARITY
Code Description
A
0.25 %
B
0.15 %
LOCKWASHER
POT
10.44 ± .07
DIA.
(.411 ± .003)
* Anti-rotation lug is not available for
servo mount versions.
RESISTANCE**
Code
Element Type Resolution (%)
102 (1K ohms)
—
Hybritron®
502 (5K ohms)
—
Hybritron®
103 (10K ohms) Hybritron®
—
201 (200 ohms) Wirewound
0.069
501 (500 ohms) Wirewound
0.054
102 (1K ohms)
0.043
Wirewound
202 (2K ohms)
0.044
Wirewound
502 (5K ohms)
0.038
Wirewound
103 (10K ohms) Wirewound
0.029
203 (20K ohms) Wirewound
0.023
503 (50K ohms) Wirewound
0.017
** For Single gang, use only first three digits.
For Dual gang, use six digits separated by a "/".
R
7.42
(.292)
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***
ADDITIONAL HOLE FOR
ANTI-ROTATION PIN
1.60 +.08/-.03
DIA.
(.063 +.003/-.001)
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)
SERVO MOUNT
Code
E
Shaft FMS
3/8 "
Shaft Dia.
1/8 "
Shaft Material
Stainless Steel
*** Not available in dual gang version.
REV. 10/14
“Hybritron” is a registered trademark of Bourns, Inc.
Specifications 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 specific applications.
