Document Number: 57077
Revision 19-Sep-01
www.vishay.com
132
Model 657
Vishay Spectrol
FEATURES
• Fully Sealed for high Immunity to Environmental Damage
• Excellent Temperature Stability
• Rotational Life Exceeds 2 millimeter on Revolutions
• Low Cost and Wide Range of Options
• Stainless Steel Shaft
• Shock to 30G’s Vibration to 15G’s at 10 to 2,000Hz
Industrial Rotary Position Sensor
ORDERING INFORMATION
657 0 0 XXX
MODEL SHAFT OPTIONS SHAFT AND BUSHING OPTIONS EIA RESISTANCE CODE
0 - Round Shaft Length Bushing Length Flat 1st Significant Figure
2 - Flatted* 0 - 0.875” FMS 0.375” FMS 0.440” 2nd Significant Figure
1 - 0.625” FMS* 0.250” FMS* 0.315”* Number of Zeros
2 - 1.000” FMS* 0.500” FMS* 0.440”*
3 - 1.250” FMS* 0.750” FMS* 0.440”*
Shaft Flat applies to 657 -2-X-XXX P/N’s
*Non-Standard
Example: 657 - 0 - 0 - XXX
PARAMETER
Standard Resistance 1K to 100KΩ
Capability Range 200KΩ
Resistance Tolerance ± 20%
Linearity ± 2%
Power Rating 1.0 watt @ 85°C
Electrical Travel 240° ± 4°
Dielectric Withstanding 500VRMS @ 60Hz minimum
Output Smoothness 0.2% maximum
ELECTRICAL SPECIFICATIONS
MECHANICAL SPECIFICATIONS
PARAMETER
Bearing Type Sleeve
Mechanical Rotation 250° ± 2°
Stop Strength 10 in - lb maximum
Starting Torque 3.0 oz - in maximum
Running Torque 3.0 oz - in maximum
AB C
www.vishay.com
133
Model 657
Vishay Spectrol
Document Number: 57077
Revision 19-Sep-01
MATERIAL SPECIFICATIONS
Shaft Stainless Steel
Bushing Nickel Plated Brass
Housing Thermoplastic
Element Conductive Plastic on
Alumina Substrate
ENVIRONMENTAL SPECIFICATIONS
Rotational Life 2 Million Revolutions
Vibration 15G’s @ 10 to 2,000Hz
Operating Temperature - 40°C to + 125°C
Storage Temperature - 55°C to + 150°C
Temperature Coefficient ± 600ppm/°C
Shock 30G’s
Resistant to Solder Heat 350°C for 5 sec
Moisture Resistance Sealed Construction
IP Rating IP67*Application to provide
protection for wiring terminals
CODE RESISTANCE
(Ω)
102 1K
202 2K
502 5K
103 10K
203 20K
503 50K
104 100K
STANDARD RESISTANCE VALUES
DIMENSIONS in inches (millimeters)
Industrial Rotary Position Sensor
0.500
(12.70)
Ø 0.2497
+ 0.0000
- 0.0003
(6.34 -0.01)
0.030 MAX
(0.76)
0.031
(0.79)
0.428
(10.87) ± 0.015
0.014
(0.36)
0.625
(15.81)
0.688
(17.46)
0.375
(9.53)
0.143
(3.64)
0.035 X 0.075
(0.89 X 1.91)
MINIMUM WIRE OPENING
0.151
(3.84)
0.093
(2.36)
0.042
Ø 0.375 ±0.002 X 0.030 MAX WIDE PILOT
(9.53 X 0.76 MAX WIDE PILOT)
+ 0.000 - 0.051
3/8 - 32 UNEF - 2A
0.216
(5.49)
± 0.015
90° ±5°
SPECTROL
657-X-X-XXX
XXXX MEX
3 2 1
SHAFT FLAT AND PHASING DIAGRAM
WITH SHAFT FLAT POSITIONED AS SHOWN, OUTPUT RATIO
TO BE e/E = 0.50 ±0.02
DECIMALS: XX ±0.01 INCHES (± 0.25mm)
XX ± 0.005 INCHES (± 0.13mm) ANGLES: ± 2°
Unit Spectrol, part number, data code,
Identification country of origin and terminal designation
MARKING
13
2
SCHEMATIC
CW
A± 0.031
B
