Series 270
Data Sheet
Electrocomponents
®
Rotary Potentiometer
Industrial
16mm Diameter
Carbon Composition
Rotary Potentiometer
Features
- Bushing
- Twist or Bend Tab
- Snap-in PC Bracket
- PC Terminal
Electrical and Mechanical Specifications
Resistance Range
500 ohms through 2 Megohms, linear
5K ohms through 200K ohms, audio
Resistance Tolerance
±30%, ±20%, ±10%
Power Rating
1/4 watts @ 55°C
(Resistance up to 100K ohms)
1/5 watts @ 55°C
(Resistance above 100K ohms)
Dielectric Strength
750 VAC for 1 minute
Maximum Operating Voltage
500 VDC
Insulation Resistance
100 Megohms minimum @ 250 VDC
Angle of Rotation
Total Rotation (Potentiometer and Switch)
Without Switch: 300°
315°
With Switch:
Effective Electrical Angle (Potentiometer)
Without Switch: 300°
290°
With Switch:
Rotational Torque
36-360 gf-cm
Stop Strength
5.76 kgf-cm minimum
Push-Pull Strength of Shaft
10 kg for 10 seconds
Rotational life
10K cycles
Operating temperature
-10°C to +70°C
Solder Heat Resistance
260°C for 5 seconds
Mounting Information
- Bushing
- Twist Tab
- Bend Tab
- Snap-in PC Bracket
- PC Terminal
1-9
CTS Electrocomponents
© 2010 CTS Corporation. All rights reserved. Information subject to change.
www.ctscorp.com
08/06/10
Electrical and Mechanical Specifications
Shaft and Bushing Information
Metal Shaft and Bushing
Single or Dual Section Potentiometer with One Shaft
Shaft Diameter
inch
.125
.156
.187
.236
.250
mm
3.20
4.00
4.70
6.00
6.35
inch
1/4" – 32UNEF-2A
1/4" – 32UNEF-2A
3/8" – 32UNEF-2A
3/8" – 32UNEF-2A
3/8" – 32UNEF-2A
Bushing Diameter
mm
M7 X .75P
M7 X .75P
M7 X .75P
M8 X .75P
M9 X .75P
Concentric Tandem Potentiometer with Two Shafts
Outer Shaft Diameter
inch
.236
.250
mm
6.00
6.35
Inner Shaft Diameter
inch
.156
.125
mm
4.0
3.2
.
Bushing Diameter
inch
3/8" – 32UNEF-2A
3/8" – 32UNEF-2A
mm
M8 X.75P
M9 X.75P
Molded Shaft and Bushing
Single Section Potentiometer with One Shaft
Shaft Diameter
inch
.156
.187
.236
.250
mm
4.00
4.70
6.00
6.35
inch
1/4" – 32UNEF-2A
3/8" – 32UNEF-2A
3/8" – 32UNEF-2A
3/8" – 32UNEF-2A
Bushing Diameter
mm
M7 X .75P
M7 X .75P
M8 X .75P
M9 X .75P
Shaft with Twist Tab, Bend Tab, Snap-in PC Bracket, or PC Terminal
All metal or molded shaft diameters can be used except .187”(4.7mm), which can be used with snap-in PC bracket only.
Terminal Information
Standard:
T:
X:
Solder lug formed 90° to the rear on single section and formed 60° on multi-section.
PC terminals standard .438" (11.1mm) from center line of control to PC board, straight terminals extend .156" (4.0mm)
into PC board.
PC terminals formed 90° to the rear, away from panel mounting. Terminals extend .442" (11.2mm) from mounting surface.
U: PC terminals formed 90° forward toward mounting surface. Terminals extend .187" (4.7mm) beyond mounting surface.
V:
Special:
T:
W:
Solder lug perpendicular to shaft. Or, solder lug formed 60° to the rear.
Wire wrap terminals — .156" (4.0mm) terminal extension beyond base, formed 60° to the rear.
2-9
CTS Electrocomponents
© 2010 CTS Corporation. All rights reserved. Information subject to change.
08/06/10
www.ctscorp.com
Electrical and Mechanical Specifications
Optional Power Switches (All SPST)
9.0
.354
15.3
.602
T=
5.2
.205
Ø2.41
.095 HOLES(2)
0.4
.016
3.8
.150
5A @ 20 VDC
057
Rotary
3A @ 125 VAC
(UL approved)
0.8
.031
4.37
.172
4.50
.177
0.4
.016
4.37
.172
Ø1.40 MIN. (2)HOLES
.055
4.50
.177
16.6
.652
SERIES
TYPE
ELECTRICAL
RATING
11.15
.439
6ZLWFK $FWXDWLQJ $QJOH Û
Switch Actuating Torque - 2 to 10 in. oz.
(144 to 720gf-cm)
0.2
.008
DIMENSION:
mm
inch
9.1
.358
15.9
.626
SERIES
DEMI
DEMI
TYPE
Push On-Pull Off
Momentary Contact
Push On
ELECTRICAL
RATING
3A @ 20 VDC
3A @ 20 VDC
0.4
.016
3.2
.126
3.6
.142
X=12.7
.500
Y=15.5
.610
4.37
.172
4.37
.172
Ø1.40 MIN. (2)HL'S
.055
DIMENSION:
mm
inch
3-9
CTS Electrocomponents
© 2010 CTS Corporation. All rights reserved. Information subject to change.
08/06/10
www.ctscorp.com
270X
Metal Shaft, Bushing Mount, Printed Circuit “X” Type Terminals
MOUNTING HOLE DETAIL
MOUNTING SURFACE
L±0.8
.031
9.53
.375
"A"±
0.4
.016
7.95
.313
2.39
.094
7.95±0.05
.313±.002
7.95±0.05
.313±.002
7.95
.313
CLEARANCE FOR BUSHING.
11.13
.438
15.09
.594
CLEARANCE FOR 2.4 X 1.0(.094 X .039)
LOCATING LUG. (2)HOLES.
MOUNTING SURFACE
Ø15.9
.626
3/8-32UNEF-2A
1
2
3
CCW
1
2
WIPER
CW
3
15.9
.626
4.09
REF.
.162
CLOCKWISE
CIRCUIT
4.37±0.05
.172±.002
4.37±0.05
.172±.002
Ø1.4 MIN.
.055
(3) HOLES
RECOMMENDED PCB LAYOUT
DIMENSION:
mm
INCH
270U
Metal Shaft, Bushing Mount, Printed Circuit “U” Type Terminals
MOUNTING SURFACE
9.53
.375
"A"±
L±0.8
.031
0.4
.016
2.39
.094
7.95
.313
CLEARANCE FOR 2.4 X 1.0 (.094 X .039)
MOUNTING LUG. (2)HOLES.
CLEARANCE FOR BUSHING
7.95
.313
8.00±0.05
.315±.002
8.00±0.05
.315±.002
Ø15.9
.626
11.30±0.05
.445±.002
11.13
.438
3/8-32UNEF-2A
1
9.2± 0.4
.362± .16
2
3
11.30
.445
4.37±0.05
.172±.002
4.37±0.05
.172±.002
Ø1.4 MIN.
.055
(3) HOLES
15.9
.626
CCW
1
2
WIPER
CW
3
RECOMMENDED PCB LAYOUT
CLOCKWISE
CIRCUIT
DIMENSION:
mm
INCH
4-9
CTS Electrocomponents
© 2010 CTS Corporation. All rights reserved. Information subject to change.
08/06/10
www.ctscorp.com
270V
Metal Shaft, Bushing Mount, Printed Circuit “V” Type Terminals
MOUNTING HOLE DETAIL
MOUNTING SURFACE
9.53
.375
L±0.8
.031
"A"± 0.4
.016
7.95±0.05
.313±.002
7.95±0.05
.313±.002
7.95
.313
CLEARANCE FOR BUSHING.
2.39
.094
7.95
.313
12.29
.484
CLEARANCE FOR 2.4 X 1.0(.094 X .039)
LOCATING LUG. (2)HOLES.
CENTER LINES
OF CONTROL
Ø15.9
.626
3/8-32UNEF-2A
1
11.2± 0.4
.441± .16
2
3
2
CCW
1
CLOCKWISE
CIRCUIT
WIPER
CW
3
4.37±0.05
.172±.002
4.37±0.05
.172±.002
12.29
.484
15.9
.626
Ø1.4 MIN.
.055
(3) HOLES
DIMENSION:
mm
INCH
RECOMMENDED PCB LAYOUT
275X
Metal Shaft, Bushing Mount, Printed Circuit “X” Type Terminals
MOUNTING HOLE DETAIL
MOUNTING SURFACE
L±0.8
.031
7.95
.313
2.39
.094
Ø15.9
.626
12.5
.492
17.00
.669
3/8-32UNEF-2A
2
4.5
.177
1
2
3
CCW
1
CLOCKWISE
CIRCUIT
WIPER
CW
3
5.00±0.05
.197±.002
5.00±0.05
.197±.002
Ø1.4 MIN.
.055
(3) HOLES
CLEARANCE FOR BUSHING.
7.95
.313
CLEARANCE FOR 2.4 X 1.0(.094 X .039)
LOCATING LUG. (2)HOLES.
MOUNTING SURFACE
7.95±0.05
.313±.002
7.95±0.05
.313±.002
9.53
.375
"A"±
0.4
.016
4.09
REF.
.162
15.9
.626
RECOMMENDED PCB LAYOUT
DIMENSION:
mm
INCH
5-9
CTS Electromonponents
© 2010 CTS Corporation. All rights reserved. Information subject to change.
08/06/10
www.ctscorp.com
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