Series 251
®
Long life, 9mm
diameter, composition
element, variable
resistor
Features
• 1 million cycle life
• Miniature 9 mm size
• Multiple rotation angles available
• Low rotational torque
• Sturdy insert molded PC terminals
• Bushing mount or shaftless available
• Tap available
Electrical and Mechanical Specifications
Resistance Range
10 K ohms through 200 K ohms
Resistance Tolerance
Standard: ± 20%
Special: ± 10% and ± 30% available
Resistance Taper
Linear ± 5%
Insulation Resistance
100 megohms minimum @ 250 VDC
Operating Temperature
-10°C to +70°C
Rotational Torque
3 to 10 gf-cm
Rotational Life
1,000,000 cycles
Power Rating
0.01 watt at 50°C derated to no load at 85°C
Maximum Operating Voltage
Maximum 50 VAC or 5 VDC
Angle of Rotation
Total Rotation - With Shaft: 180°
No Shaft: 360°
Effective Rotation: 38°, 40°, 50°, 60°,
70°, 85°, 90° or 110° available
(Typical joystick control use.)
Materials
Housing: UL 94V-2
Shaft / Bushing: UL 94V-2
Base UL flame class 94HB
Shaft Information
Flatted, molded shaft
Diameter: 3.96 mm or 5.0 mm,
depending on shaft trim
Mounting Information
Bushing mount (unthreaded)
Diameter: 7.00 mm
Length: 5.00 mm
Tap Available
4° angle at 50% rotation optional
Other taps available - consult CTS
Technical Data Sheet 1251
CTS CORPORATION /
MANUFACTURER OF RELIABLE ELECTRONIC COMPONENTS
CTS SERIES 251
“T” Shaft Trim
Mounting Hole Detail
DIMENSION:
MM
INCH
“F” Shaft Trim
Mounting Hole Detail
DIMENSION:
MM
INCH
No Shaft
Hole Placement Detail
View from pot mounting side
DIMENSION:
MM
INCH
Order Information
251
Terminal Type
B-Straight P.C.
“L” Shafts Length
00 - No shaft
12 - 12 mm
15 - 15 mm
Part Number Code For Ordering
B
00
0
254
A
1
N
1
Specials
1 - None
B - W/bushing
Resistance Tap
N: No center tap
T: 4° tap at center
Shafts Trim
0 - No shaft
F - 5 mm dia flatted
thickness 3.5 mm
T - 4 mm dia flatted
thickness 3.45 mm
Resistance Tol
A: ± 10%
B: ± 20%
C: ± 30%
Resistance Code Examples
Code
Resistance
252
2.5K
253
25K
254
250K
255
2.5Meg
Effective Angle
1- 40°
2- 50°
3- 60°
4- 38°
5- 110°
6- 85°
7- 70°
8-
9- 90°
Order From:
CTS CORPORATION, ELECTROCOMPONENTS
/ 1601 Mishawaka Street / Elkhart, Indiana 46514
North America Toll Free (888) 287-4690 / (219) 296-6700 / FAX: (219) 293-1240 http://www.ctscorp.com
CTS COMPONENTS TAIWAN, LTD.
/ 7, Central 6th Road (Chung Liu Road) / P.O. Box 26-20
Kaohsiung Export Processing Zone / Kaohsiung, Taiwan, Rep. of China
(07) 8216145 / FAX: (07) 8417642.8110040
5M-3-99I
51单片机
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