www.vishay.com
55
Model 140, 142
Vishay Spectrol
Document Number: 57039
Revision 16-Jul-03 For technical questions, contact sfer@vishay.com
FEATURES
•50Ω to 20KΩ
• Bushing or Servo
1/2” (12.7mm) Single - Turn Wirewound
Precision Potentiometer
PARAMETER
STANDARD
Total Resistance 50Ω to 20KΩ
Tolerance ± 5%
Absolute Minimum Resistance Linearity x Total Resistance or
0.5Ω, whichever is greater
Linearity (Independent) ± 1.0%
Noise 100Ω ENR
Power Rating 2 watts at 40°C ambient derating linearly to zero at 125°C
Insulation Resistance 1,000MΩ min. 0.500VDC
Dielectric Strength 1.000VRMS, 60 Hz
Rotation 140 142
320° ± 5°350° + 0° - 4°
End Voltage Linearity x total applied voltage for total resistance above 20Ω;
2.0% of total applied voltage for 20Ω and below
ELECTRICAL SPECIFICATIONS
MATERIAL SPECIFICATIONS
Shaft Stainless steel, non magnetic
non-passivated
Housing Aluminum, anodized
Rear Lid Molded glass filled
thermoset plastic
Terminals Brass, gold plated
Mounting Hardware (Model 140 only)
Lockwasher Internal Tooth: Steel, nickel plated.
Panel nut: Brass, nickel plated
ENVIRONMENTAL SPECIFICATIONS
Vibration 20G thru 2000 Hz
Shock 50g
Salt Spray 96 Hours
Rotational Life 500,000
Shaft Revolutions
Load Life 900 Hours
Temperature Range - 55°C to + 125°C (operating)
This part number consists of four groups of digits. The first group is the Spectrol model number. The second digit describes the mechani-
cal options available. The third digit describes the other optional features which can be supplied. The fourth group is the standard EIA
resistance code.
Example: 140 - 0 - 0 - 203
140 0 0 203
MODEL MECHANICAL OPTIONS OTHER OPTIONAL RESISTANCE CODE
FEATURES
Bushing 140 0. Stops, Slotted Shaft (std) 0. Standard Torque 2 = First Significant figure
1. Plain Shaft 1. Center Tap (10K max. Rt) 0 = Second significant figure
2. Shaft Lock 2. High Torque 3 = Number of zeros following
3. Continuous Rotation 3. Sealed Construction
4. Combination 1 & 2 4. Combination 1 & 2
5. Combination 1 & 3 5. Combination 1 & 3
6. Combination 2 & 3 6. Combination 2 & 3
7. Combination 1, 2, & 3 7. Combination 1, 2, & 3
Servo 142 0. Continuous Rotation, 0. Standard Torque Same as above
Plain Shaft (std.) 1. Center Tap (10K max. Rt)
Example: Part number 140-0-0-203 describes bushing mount 140 with stops, slotted shaft, standard torque and resistance of 20KΩ
ORDERING INFORMATION
Model 140
Bushing Mount
Model 142
Servo Mount