Model 140
Vishay Spectrol
1/2" (12.7 mm) Single - Turn Wirewound
Bushing Mount Type Precision Potentiometer
DIMENSIONS in inches (millimeters)
0.062 WIDE
IMPERFECT
THR’O AREA
+ 0.000
- 0.003
Ø 0.250 MTG. (6.10)
+ 0.0000
- 0.0003
Ø 0.1248
(3.17)
1/4 - 32
UNEF - 2A
THREAD
120°
TYP.
0.133 R
(3.38)
Ø 0.500
(12.70)
0.187
(4.75)
CW
0.056
(1.42)
0.305
(7.75)
0.015 0.031
0.031
(0.79)
0.152
(3.86)
(0.79)
0.312
(7.92)
Ø 0.062
(1.57)
0.700 (17.708.0)10
MTG. FACE
SHAFT LOCK OPTION
CENTER TAP OPTION
0.500
(12.70)
150°
TOLERANCES: UNLESS
OTHERWISE NOTED.
DECIMALS 0.005 ANGLES 2 °
60°
CENTER TAP AVAILABLE AS
SPEC STANDARD FEATURE
0.218
INTEGRAL SHAFT LOCK
MECHANICAL SPECIFICATIONS
PARAMETER
Rotation
330° 5°
Bearing Type
Torque (Maximums)
Starting
Running
Dead Zone
SLEEVE BEARING
0.2 oz. - in (14.40 g - cm)
0.2 oz. - in (14.40 g - cm)
Not applicable
Weight
0.1 oz. maximum (2.84 g)
Stop Strength
5 in - lbs (5.76 kg - cm) static
Runouts (Maximum)
Shaft (TIR)
Pilot Dia. (TIR)
Lateral (TIR)
Shaft End Play
Shaft Radial Play
0.002" (0.05 cm)
0.002" (0.05 cm)
0.003" (0.08 cm)
0.006" (0.15 cm)
0.003" (0.08 cm)
POWER RATING CHART
RESISTANCE ELEMENT DATA
MAXIMUM MAXIMUM
STD
WIRE
TEMP.
2
RESO- OHMS CURRENT VOLTAGE
RESISTANCE
VALUES
LUTION PER
AT 40 °C
ACROSS
COIL
COEF.
(%)
TURN AMBIENT
(mA)
(
Ω)
(ppm/°C)
(V)
50
100
200
500
1K
0.542 0.271
0.431 0.431
0.361 0.722
200.0
141.0
100.0
63.2
44.7
31.6
20.0
14.1
10.0
10.0
14.1
20
20
20
20
20
20
20
20
20
1
0
20.0
0.312
0.255
0.197
0.170
0.147
0.105
1.56
2.55
3.94
8.50
14.7
21.0
31.6
0
20 40 60 80 100 120 140 160
44.7
AMBIENT TEMPERATURE IN °C
2K
63.2
MARKING
5K
100.0
141.0
200.0
Units shall be marked with manufacturer’s
name, model number, resistance value and
Unit
10K
20K
Identification tolerance, circuit diagram, terminal
identification, linearity and data code.
Document Number: 57097
Revision: 28-Jun-07
For technical questions, contact: sfer@vishay.com
www.vishay.com
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