Model 128
Vishay Spectrol
www.vishay.com
1 1/16" (27 mm) Single Turn Conductive Plastic
Precision Potentiometer
FEATURES
• 1 1/16" round
• Bushing mount and servo mount types
• Designed for high reliability applications
• Ohmic value range: 500 to 50 k
• Rotational life exceeds 20 million shaft revolutions
• Virtually infinite resolution
• Up to 6 sections available
QUICK REFERENCE DATA
• Co-molded track and multi-finger wiper provide low noise
signal
Sensor type
ROTATIONAL, conductive plastic
Output type
Output by turrets
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
Market appliance
Dimensions
Professional
1 1/16" (27 mm)
ELECTRICAL SPECIFICATIONS
PARAMETER
STANDARD
SPECIAL
Total Resistance
500 to 50 k
10 %
Tolerance
5 %
Linearity (independent)
Electrical Angle
0.5 %
0.15 %
345° 4°
Power Rating
Section 1:
1.25 W at 70 °C ambient, derated to zero at 125 °C ambient
75 % of the rating of section 1
Additional Section:
Output Smoothness
Insulation Resistance
Dielectric Strength
Phasing (CCW End Points)
Temperature Coefficient of Resistance
Taps (extra)
0.1 % maximum
1000 M minimum, 500 VDC
1000 VRMS, 60 Hz
Points at which output ratio is 0.5 aligned 1° (ref. section 1)
600 ppm/°C maximum
Extra taps available as special
ORDERING INFORMATION/DESCRIPTION
The Model 128 can be ordered from this datasheet with a variety of alternate characteristics, as shown above. For most rapid service on
your order, please state:
128
S
1
1K
BO1
MODEL
MOUNTING
NUMBER OF SECTIONS
TOTAL RESISTANCE OF EACH SECTION
PACKAGING
B: Bushing
S: Servo
Beginning with the section nearest the
mounting end
Up to 6
Box of 1 piece
Other characteristics will be standard as described on this data sheet. If special characteristics are required, such as: special linearity
tolerance, special resistance tolerance, extra taps, non-linear functions, etc., please state these on your order and allow additional lead time
for delivery.
SAP PART NUMBERING GUIDELINES
128
S
3
103
102
203
B01
OHMIC VALUE
GANG N° 1
OHMIC VALUE
GANG N° 2
OHMIC VALUE
GANG N° 3
MODEL
STYLE
GANGS
PACKAGING
B: Bushing
S: Servo
From 1 up to 6
10K
1K
20K
Box of 1 piece
Revision: 03-Aug-12
Document Number: 57037
1
For technical questions, contact: sferprecisionpot@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000