MODEL308 Datasheet, PDF (1/4 Pages) Vishay Siliconix – 2 (50.8 mm) Single Turn Conductive Plastic Precision Potentiometer

Model 308
Vishay Spectrol
2" (50.8 mm) Single Turn Conductive Plastic
Precision Potentiometer
FEATURES
• Bushing mount and servo mount types available
• Virtually infinite resolution
• Up to 6 sections available
RoHS
COMPLIANT
• Rotational life exceeds 20 million shaft revolutions
• Co-Molded track and Multi-Finger wiper provide low noise
signal
• Large ohmic value range: 500 Ω to 100 kΩ
ELECTRICAL SPECIFICATIONS
PARAMETER
Total Resistance
Standard Range
Tolerance
Linearity (Independent)
Electrical Angle
Power Rating
Section 1
Additional Sections
Output Smoothness
Insulation Resistance
Dielectric Strength
Taps (Extra)
Phasing
Temperature Coefficient of Resistance
STANDARD
± 10 %
STANDARD
± 0.25 %
500 Ω to 100 kΩ
350° ± 2°
SPECIAL
±5%
SPECIAL
± 0.05 %
2.0 W at 70 °C ambient derated to zero at 125 °C (400 V_DC maximum)
75 % of the rating of section 1
0.1 % maximum
1000 MΩ minimum 500 V_DC
1000 V_RMS, 60 Hz
Extra taps available as special
Points at which output ratio is 0.5 aligned ± 1° (ref. to section 1)
± 400 ppm/°C maximum
MATERIAL SPECIFICATIONS
Housing and Lids
Aluminum, anodized
Shaft and Clamp Rings
Stainless steel, non-magnetic
non-passivated
Terminals
Brass, gold plated for solderability
Bushing Mount Hardware
Lockwasher Internal Tooth:
Panel Nut:
Steel, nickel plated
Brass, nickel plated
ENVIRONMENTAL SPECIFICATIONS
Vibration
15 g thru 2000 Hz
Shock
50 g
Salt Spray
96 h
Rotational Life
Servo: 20 million shaft revolutions
Bushing: 5 million shaft revolutions
Load Life
900 h
Temperature Range
- 55 °C to + 125 °C
ORDERING INFORMATION/DESCRIPTION
The Model 308 can be ordered from this data sheet with a variety of alternate characteristics, as shown. For most rapid service on your order,
please state:
308
B
1
20K
BO1
MODEL
MOUNTING
NUMBER OF SECTIONS
TOTAL RESISTANCE OF EACH SECTION
PACKAGING
B: Bushing
S: Servo
Up to 6
Beginning with the section nearest the mounting end 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
308
S
1
MODEL
STYLE
GANG NUMBER
B: Bushing
S: Servo
From 1 up to 6
203
OHMIC VALUE GANG N^O 1
20K
B01
PACKAGING
www.vishay.com
38
For technical questions, contact: [e-mail]
Document Number: 57058
Revision: 22-Mar-07